linux 2.6.16.38 w/ vs2.0.3-rc1
[linux-2.6.git] / sound / core / oss / pcm_oss.c
index e98c089..7fd0723 100644 (file)
@@ -33,6 +33,7 @@
 #include <linux/time.h>
 #include <linux/vmalloc.h>
 #include <linux/moduleparam.h>
+#include <linux/string.h>
 #include <sound/core.h>
 #include <sound/minors.h>
 #include <sound/pcm.h>
@@ -46,7 +47,7 @@
 
 static int dsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 0};
 static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
-static int nonblock_open;
+static int nonblock_open = 1;
 
 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>");
 MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
@@ -60,10 +61,10 @@ MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices.");
 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM);
 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1);
 
-extern int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg);
-static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file);
-static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file);
-static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file);
+extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg);
+static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file);
+static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file);
+static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file);
 
 static inline mm_segment_t snd_enter_user(void)
 {
@@ -77,10 +78,10 @@ static inline void snd_leave_user(mm_segment_t fs)
        set_fs(fs);
 }
 
-int snd_pcm_oss_plugin_clear(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
-       snd_pcm_plugin_t *plugin, *next;
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       struct snd_pcm_plugin *plugin, *next;
        
        plugin = runtime->oss.plugin_first;
        while (plugin) {
@@ -92,9 +93,9 @@ int snd_pcm_oss_plugin_clear(snd_pcm_substream_t *substream)
        return 0;
 }
 
-int snd_pcm_plugin_insert(snd_pcm_plugin_t *plugin)
+static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin)
 {
-       snd_pcm_runtime_t *runtime = plugin->plug->runtime;
+       struct snd_pcm_runtime *runtime = plugin->plug->runtime;
        plugin->next = runtime->oss.plugin_first;
        plugin->prev = NULL;
        if (runtime->oss.plugin_first) {
@@ -107,9 +108,9 @@ int snd_pcm_plugin_insert(snd_pcm_plugin_t *plugin)
        return 0;
 }
 
-int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin)
+int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
 {
-       snd_pcm_runtime_t *runtime = plugin->plug->runtime;
+       struct snd_pcm_runtime *runtime = plugin->plug->runtime;
        plugin->next = NULL;
        plugin->prev = runtime->oss.plugin_last;
        if (runtime->oss.plugin_last) {
@@ -122,20 +123,29 @@ int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin)
        return 0;
 }
 
-static long snd_pcm_oss_bytes(snd_pcm_substream_t *substream, long frames)
+static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
-       snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream);
-       frames = frames_to_bytes(runtime, frames);
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       long buffer_size = snd_pcm_lib_buffer_bytes(substream);
+       long bytes = frames_to_bytes(runtime, frames);
        if (buffer_size == runtime->oss.buffer_bytes)
-               return frames;
-       return (runtime->oss.buffer_bytes * frames) / buffer_size;
+               return bytes;
+#if BITS_PER_LONG >= 64
+       return runtime->oss.buffer_bytes * bytes / buffer_size;
+#else
+       {
+               u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
+               u32 rem;
+               div64_32(&bsize, buffer_size, &rem);
+               return (long)bsize;
+       }
+#endif
 }
 
-static long snd_pcm_alsa_frames(snd_pcm_substream_t *substream, long bytes)
+static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
-       snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream);
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       long buffer_size = snd_pcm_lib_buffer_bytes(substream);
        if (buffer_size == runtime->oss.buffer_bytes)
                return bytes_to_frames(runtime, bytes);
        return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
@@ -175,14 +185,14 @@ static int snd_pcm_oss_format_to(int format)
        }
 }
 
-static int snd_pcm_oss_period_size(snd_pcm_substream_t *substream, 
-                                  snd_pcm_hw_params_t *oss_params,
-                                  snd_pcm_hw_params_t *slave_params)
+static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, 
+                                  struct snd_pcm_hw_params *oss_params,
+                                  struct snd_pcm_hw_params *slave_params)
 {
        size_t s;
        size_t oss_buffer_size, oss_period_size, oss_periods;
        size_t min_period_size, max_period_size;
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        size_t oss_frame_size;
 
        oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
@@ -267,11 +277,11 @@ static int snd_pcm_oss_period_size(snd_pcm_substream_t *substream,
        return 0;
 }
 
-static int choose_rate(snd_pcm_substream_t *substream,
-                      snd_pcm_hw_params_t *params, unsigned int best_rate)
+static int choose_rate(struct snd_pcm_substream *substream,
+                      struct snd_pcm_hw_params *params, unsigned int best_rate)
 {
-       snd_interval_t *it;
-       snd_pcm_hw_params_t *save;
+       struct snd_interval *it;
+       struct snd_pcm_hw_params *save;
        unsigned int rate, prev;
 
        save = kmalloc(sizeof(*save), GFP_KERNEL);
@@ -307,18 +317,18 @@ static int choose_rate(snd_pcm_substream_t *substream,
        return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
 }
 
-static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
-       snd_pcm_hw_params_t *params, *sparams;
-       snd_pcm_sw_params_t *sw_params;
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       struct snd_pcm_hw_params *params, *sparams;
+       struct snd_pcm_sw_params *sw_params;
        ssize_t oss_buffer_size, oss_period_size;
        size_t oss_frame_size;
        int err;
        int direct;
        int format, sformat, n;
-       snd_mask_t sformat_mask;
-       snd_mask_t mask;
+       struct snd_mask sformat_mask;
+       struct snd_mask mask;
 
        sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
        params = kmalloc(sizeof(*params), GFP_KERNEL);
@@ -332,7 +342,7 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
        if (atomic_read(&runtime->mmap_count)) {
                direct = 1;
        } else {
-               snd_pcm_oss_setup_t *setup = substream->oss.setup;
+               struct snd_pcm_oss_setup *setup = substream->oss.setup;
                direct = (setup != NULL && setup->direct);
        }
 
@@ -414,7 +424,7 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
                        goto failure;
                }
                if (runtime->oss.plugin_first) {
-                       snd_pcm_plugin_t *plugin;
+                       struct snd_pcm_plugin *plugin;
                        if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) {
                                snd_printd("snd_pcm_plugin_build_io failed: %i\n", err);
                                snd_pcm_oss_plugin_clear(substream);
@@ -464,7 +474,8 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
        sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
        sw_params->period_step = 1;
        sw_params->sleep_min = 0;
-       sw_params->avail_min = 1;
+       sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+               1 : runtime->period_size;
        sw_params->xfer_align = 1;
        if (atomic_read(&runtime->mmap_count) ||
            (substream->oss.setup && substream->oss.setup->nosilence)) {
@@ -513,8 +524,7 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
 
        runtime->oss.params = 0;
        runtime->oss.prepare = 1;
-       if (runtime->oss.buffer != NULL)
-               vfree(runtime->oss.buffer);
+       vfree(runtime->oss.buffer);
        runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
        runtime->oss.buffer_used = 0;
        if (runtime->dma_area)
@@ -524,19 +534,16 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
 
        err = 0;
 failure:
-       if (sw_params)
-               kfree(sw_params);
-       if (params)
-               kfree(params);
-       if (sparams)
-               kfree(sparams);
+       kfree(sw_params);
+       kfree(params);
+       kfree(sparams);
        return err;
 }
 
-static int snd_pcm_oss_get_active_substream(snd_pcm_oss_file_t *pcm_oss_file, snd_pcm_substream_t **r_substream)
+static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream)
 {
        int idx, err;
-       snd_pcm_substream_t *asubstream = NULL, *substream;
+       struct snd_pcm_substream *asubstream = NULL, *substream;
 
        for (idx = 0; idx < 2; idx++) {
                substream = pcm_oss_file->streams[idx];
@@ -556,10 +563,10 @@ static int snd_pcm_oss_get_active_substream(snd_pcm_oss_file_t *pcm_oss_file, sn
        return 0;
 }
 
-static int snd_pcm_oss_prepare(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
 {
        int err;
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
 
        err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
        if (err < 0) {
@@ -574,9 +581,9 @@ static int snd_pcm_oss_prepare(snd_pcm_substream_t *substream)
        return 0;
 }
 
-static int snd_pcm_oss_make_ready(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
        int err;
 
        if (substream == NULL)
@@ -595,9 +602,9 @@ static int snd_pcm_oss_make_ready(snd_pcm_substream_t *substream)
        return 0;
 }
 
-static int snd_pcm_oss_capture_position_fixup(snd_pcm_substream_t *substream, snd_pcm_sframes_t *delay)
+static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
        snd_pcm_uframes_t frames;
        int err = 0;
 
@@ -620,9 +627,9 @@ static int snd_pcm_oss_capture_position_fixup(snd_pcm_substream_t *substream, sn
        return err;
 }
 
-snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
+snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        int ret;
        while (1) {
                if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
@@ -640,10 +647,10 @@ snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char
                if (in_kernel) {
                        mm_segment_t fs;
                        fs = snd_enter_user();
-                       ret = snd_pcm_lib_write(substream, ptr, frames);
+                       ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
                        snd_leave_user(fs);
                } else {
-                       ret = snd_pcm_lib_write(substream, ptr, frames);
+                       ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
                }
                if (ret != -EPIPE && ret != -ESTRPIPE)
                        break;
@@ -655,9 +662,9 @@ snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char
        return ret;
 }
 
-snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
+snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        snd_pcm_sframes_t delay;
        int ret;
        while (1) {
@@ -683,10 +690,10 @@ snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, s
                if (in_kernel) {
                        mm_segment_t fs;
                        fs = snd_enter_user();
-                       ret = snd_pcm_lib_read(substream, ptr, frames);
+                       ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
                        snd_leave_user(fs);
                } else {
-                       ret = snd_pcm_lib_read(substream, ptr, frames);
+                       ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
                }
                if (ret == -EPIPE) {
                        if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
@@ -702,9 +709,9 @@ snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, s
        return ret;
 }
 
-snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
+snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        int ret;
        while (1) {
                if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
@@ -722,10 +729,10 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **buf
                if (in_kernel) {
                        mm_segment_t fs;
                        fs = snd_enter_user();
-                       ret = snd_pcm_lib_writev(substream, bufs, frames);
+                       ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
                        snd_leave_user(fs);
                } else {
-                       ret = snd_pcm_lib_writev(substream, bufs, frames);
+                       ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
                }
                if (ret != -EPIPE && ret != -ESTRPIPE)
                        break;
@@ -738,9 +745,9 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **buf
        return ret;
 }
        
-snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
+snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        int ret;
        while (1) {
                if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
@@ -762,10 +769,10 @@ snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs
                if (in_kernel) {
                        mm_segment_t fs;
                        fs = snd_enter_user();
-                       ret = snd_pcm_lib_readv(substream, bufs, frames);
+                       ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
                        snd_leave_user(fs);
                } else {
-                       ret = snd_pcm_lib_readv(substream, bufs, frames);
+                       ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
                }
                if (ret != -EPIPE && ret != -ESTRPIPE)
                        break;
@@ -773,15 +780,15 @@ snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs
        return ret;
 }
 
-static ssize_t snd_pcm_oss_write2(snd_pcm_substream_t *substream, const char *buf, size_t bytes, int in_kernel)
+static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        snd_pcm_sframes_t frames, frames1;
        if (runtime->oss.plugin_first) {
-               snd_pcm_plugin_channel_t *channels;
+               struct snd_pcm_plugin_channel *channels;
                size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
                if (!in_kernel) {
-                       if (copy_from_user(runtime->oss.buffer, buf, bytes))
+                       if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes))
                                return -EFAULT;
                        buf = runtime->oss.buffer;
                }
@@ -803,11 +810,11 @@ static ssize_t snd_pcm_oss_write2(snd_pcm_substream_t *substream, const char *bu
        return bytes;
 }
 
-static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __user *buf, size_t bytes)
+static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes)
 {
        size_t xfer = 0;
        ssize_t tmp;
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
 
        if (atomic_read(&runtime->mmap_count))
                return -ENXIO;
@@ -843,7 +850,9 @@ static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __u
                                        return xfer > 0 ? xfer : -EAGAIN;
                        }
                } else {
-                       tmp = snd_pcm_oss_write2(substream, (char *)buf, runtime->oss.period_bytes, 0);
+                       tmp = snd_pcm_oss_write2(substream,
+                                                (const char __force *)buf,
+                                                runtime->oss.period_bytes, 0);
                        if (tmp <= 0)
                                return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
                        runtime->oss.bytes += tmp;
@@ -858,13 +867,13 @@ static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __u
        return xfer;
 }
 
-static ssize_t snd_pcm_oss_read2(snd_pcm_substream_t *substream, char *buf, size_t bytes, int in_kernel)
+static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        snd_pcm_sframes_t frames, frames1;
-       char *final_dst = buf;
+       char __user *final_dst = (char __user *)buf;
        if (runtime->oss.plugin_first) {
-               snd_pcm_plugin_channel_t *channels;
+               struct snd_pcm_plugin_channel *channels;
                size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8;
                if (!in_kernel)
                        buf = runtime->oss.buffer;
@@ -888,11 +897,11 @@ static ssize_t snd_pcm_oss_read2(snd_pcm_substream_t *substream, char *buf, size
        return bytes;
 }
 
-static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *buf, size_t bytes)
+static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes)
 {
        size_t xfer = 0;
        ssize_t tmp;
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
 
        if (atomic_read(&runtime->mmap_count))
                return -ENXIO;
@@ -919,7 +928,8 @@ static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *bu
                        xfer += tmp;
                        runtime->oss.buffer_used -= tmp;
                } else {
-                       tmp = snd_pcm_oss_read2(substream, (char *)buf, runtime->oss.period_bytes, 0);
+                       tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
+                                               runtime->oss.period_bytes, 0);
                        if (tmp <= 0)
                                return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
                        runtime->oss.bytes += tmp;
@@ -931,9 +941,9 @@ static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *bu
        return xfer;
 }
 
-static int snd_pcm_oss_reset(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
 
        substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
        if (substream != NULL) {
@@ -948,9 +958,9 @@ static int snd_pcm_oss_reset(snd_pcm_oss_file_t *pcm_oss_file)
        return 0;
 }
 
-static int snd_pcm_oss_post(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
 
        substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
@@ -964,9 +974,9 @@ static int snd_pcm_oss_post(snd_pcm_oss_file_t *pcm_oss_file)
        return 0;
 }
 
-static int snd_pcm_oss_sync1(snd_pcm_substream_t *substream, size_t size)
+static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
        ssize_t result = 0;
        long res;
        wait_queue_t wait;
@@ -1010,12 +1020,12 @@ static int snd_pcm_oss_sync1(snd_pcm_substream_t *substream, size_t size)
        return result;
 }
 
-static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
 {
        int err = 0;
        unsigned int saved_f_flags;
-       snd_pcm_substream_t *substream;
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_runtime *runtime;
        snd_pcm_format_t format;
        unsigned long width;
        size_t size;
@@ -1062,6 +1072,7 @@ static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file)
                        if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) {
                                size = (runtime->frame_bits * size) / 8;
                                while (size > 0) {
+                                       mm_segment_t fs;
                                        size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes;
                                        size -= size1;
                                        size1 *= 8;
@@ -1069,7 +1080,9 @@ static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file)
                                        snd_pcm_format_set_silence(runtime->format,
                                                                   runtime->oss.buffer,
                                                                   size1);
-                                       snd_pcm_lib_write(substream, runtime->oss.buffer, size1);
+                                       fs = snd_enter_user();
+                                       snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
+                                       snd_leave_user(fs);
                                }
                        } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
                                void __user *buffers[runtime->channels];
@@ -1104,13 +1117,13 @@ static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file)
        return 0;
 }
 
-static int snd_pcm_oss_set_rate(snd_pcm_oss_file_t *pcm_oss_file, int rate)
+static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
 {
        int idx;
 
        for (idx = 1; idx >= 0; --idx) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
-               snd_pcm_runtime_t *runtime;
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+               struct snd_pcm_runtime *runtime;
                if (substream == NULL)
                        continue;
                runtime = substream->runtime;
@@ -1126,9 +1139,9 @@ static int snd_pcm_oss_set_rate(snd_pcm_oss_file_t *pcm_oss_file, int rate)
        return snd_pcm_oss_get_rate(pcm_oss_file);
 }
 
-static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
        
        if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
@@ -1136,7 +1149,7 @@ static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file)
        return substream->runtime->oss.rate;
 }
 
-static int snd_pcm_oss_set_channels(snd_pcm_oss_file_t *pcm_oss_file, unsigned int channels)
+static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels)
 {
        int idx;
        if (channels < 1)
@@ -1144,8 +1157,8 @@ static int snd_pcm_oss_set_channels(snd_pcm_oss_file_t *pcm_oss_file, unsigned i
        if (channels > 128)
                return -EINVAL;
        for (idx = 1; idx >= 0; --idx) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
-               snd_pcm_runtime_t *runtime;
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+               struct snd_pcm_runtime *runtime;
                if (substream == NULL)
                        continue;
                runtime = substream->runtime;
@@ -1157,9 +1170,9 @@ static int snd_pcm_oss_set_channels(snd_pcm_oss_file_t *pcm_oss_file, unsigned i
        return snd_pcm_oss_get_channels(pcm_oss_file);
 }
 
-static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
        
        if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
@@ -1167,9 +1180,9 @@ static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file)
        return substream->runtime->oss.channels;
 }
 
-static int snd_pcm_oss_get_block_size(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
        
        if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
@@ -1177,14 +1190,14 @@ static int snd_pcm_oss_get_block_size(snd_pcm_oss_file_t *pcm_oss_file)
        return substream->runtime->oss.period_bytes;
 }
 
-static int snd_pcm_oss_get_formats(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
        int direct;
-       snd_pcm_hw_params_t *params;
+       struct snd_pcm_hw_params *params;
        unsigned int formats = 0;
-       snd_mask_t format_mask;
+       struct snd_mask format_mask;
        int fmt;
 
        if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
@@ -1192,7 +1205,7 @@ static int snd_pcm_oss_get_formats(snd_pcm_oss_file_t *pcm_oss_file)
        if (atomic_read(&substream->runtime->mmap_count)) {
                direct = 1;
        } else {
-               snd_pcm_oss_setup_t *setup = substream->oss.setup;
+               struct snd_pcm_oss_setup *setup = substream->oss.setup;
                direct = (setup != NULL && setup->direct);
        }
        if (!direct)
@@ -1218,7 +1231,7 @@ static int snd_pcm_oss_get_formats(snd_pcm_oss_file_t *pcm_oss_file)
        return formats;
 }
 
-static int snd_pcm_oss_set_format(snd_pcm_oss_file_t *pcm_oss_file, int format)
+static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
 {
        int formats, idx;
        
@@ -1227,8 +1240,8 @@ static int snd_pcm_oss_set_format(snd_pcm_oss_file_t *pcm_oss_file, int format)
                if (!(formats & format))
                        format = AFMT_U8;
                for (idx = 1; idx >= 0; --idx) {
-                       snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
-                       snd_pcm_runtime_t *runtime;
+                       struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+                       struct snd_pcm_runtime *runtime;
                        if (substream == NULL)
                                continue;
                        runtime = substream->runtime;
@@ -1241,9 +1254,9 @@ static int snd_pcm_oss_set_format(snd_pcm_oss_file_t *pcm_oss_file, int format)
        return snd_pcm_oss_get_format(pcm_oss_file);
 }
 
-static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_substream *substream;
        int err;
        
        if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
@@ -1251,9 +1264,9 @@ static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file)
        return substream->runtime->oss.format;
 }
 
-static int snd_pcm_oss_set_subdivide1(snd_pcm_substream_t *substream, int subdivide)
+static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
 
        if (substream == NULL)
                return 0;
@@ -1274,12 +1287,12 @@ static int snd_pcm_oss_set_subdivide1(snd_pcm_substream_t *substream, int subdiv
        return subdivide;
 }
 
-static int snd_pcm_oss_set_subdivide(snd_pcm_oss_file_t *pcm_oss_file, int subdivide)
+static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide)
 {
        int err = -EINVAL, idx;
 
        for (idx = 1; idx >= 0; --idx) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
                if (substream == NULL)
                        continue;
                if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
@@ -1288,9 +1301,9 @@ static int snd_pcm_oss_set_subdivide(snd_pcm_oss_file_t *pcm_oss_file, int subdi
        return err;
 }
 
-static int snd_pcm_oss_set_fragment1(snd_pcm_substream_t *substream, unsigned int val)
+static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
 
        if (substream == NULL)
                return 0;
@@ -1307,12 +1320,12 @@ static int snd_pcm_oss_set_fragment1(snd_pcm_substream_t *substream, unsigned in
        return 0;
 }
 
-static int snd_pcm_oss_set_fragment(snd_pcm_oss_file_t *pcm_oss_file, unsigned int val)
+static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val)
 {
        int err = -EINVAL, idx;
 
        for (idx = 1; idx >= 0; --idx) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
                if (substream == NULL)
                        continue;
                if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
@@ -1327,7 +1340,7 @@ static int snd_pcm_oss_nonblock(struct file * file)
        return 0;
 }
 
-static int snd_pcm_oss_get_caps1(snd_pcm_substream_t *substream, int res)
+static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
 {
 
        if (substream == NULL) {
@@ -1343,7 +1356,7 @@ static int snd_pcm_oss_get_caps1(snd_pcm_substream_t *substream, int res)
        /* all ALSA drivers can return actual pointer in ring buffer */
 #if defined(DSP_CAP_REALTIME) && 0
        {
-               snd_pcm_runtime_t *runtime = substream->runtime;
+               struct snd_pcm_runtime *runtime = substream->runtime;
                if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH))
                        res &= ~DSP_CAP_REALTIME;
        }
@@ -1351,32 +1364,32 @@ static int snd_pcm_oss_get_caps1(snd_pcm_substream_t *substream, int res)
        return res;
 }
 
-static int snd_pcm_oss_get_caps(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
 {
        int result, idx;
        
        result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
        for (idx = 0; idx < 2; idx++) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[idx];
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
                result = snd_pcm_oss_get_caps1(substream, result);
        }
        result |= 0x0001;       /* revision - same as SB AWE 64 */
        return result;
 }
 
-static void snd_pcm_oss_simulate_fill(snd_pcm_substream_t *substream, snd_pcm_uframes_t hw_ptr)
+static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        snd_pcm_uframes_t appl_ptr;
        appl_ptr = hw_ptr + runtime->buffer_size;
        appl_ptr %= runtime->boundary;
        runtime->control->appl_ptr = appl_ptr;
 }
 
-static int snd_pcm_oss_set_trigger(snd_pcm_oss_file_t *pcm_oss_file, int trigger)
+static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger)
 {
-       snd_pcm_runtime_t *runtime;
-       snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL;
+       struct snd_pcm_runtime *runtime;
+       struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
        int err, cmd;
 
 #ifdef OSS_DEBUG
@@ -1441,9 +1454,9 @@ static int snd_pcm_oss_set_trigger(snd_pcm_oss_file_t *pcm_oss_file, int trigger
        return 0;
 }
 
-static int snd_pcm_oss_get_trigger(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL;
+       struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
        int result = 0;
 
        psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
@@ -1455,10 +1468,10 @@ static int snd_pcm_oss_get_trigger(snd_pcm_oss_file_t *pcm_oss_file)
        return result;
 }
 
-static int snd_pcm_oss_get_odelay(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file)
 {
-       snd_pcm_substream_t *substream;
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_runtime *runtime;
        snd_pcm_sframes_t delay;
        int err;
 
@@ -1478,10 +1491,10 @@ static int snd_pcm_oss_get_odelay(snd_pcm_oss_file_t *pcm_oss_file)
        return snd_pcm_oss_bytes(substream, delay);
 }
 
-static int snd_pcm_oss_get_ptr(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct count_info __user * _info)
+static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info)
 {      
-       snd_pcm_substream_t *substream;
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_runtime *runtime;
        snd_pcm_sframes_t delay;
        int fixup;
        struct count_info info;
@@ -1528,22 +1541,29 @@ static int snd_pcm_oss_get_ptr(snd_pcm_oss_file_t *pcm_oss_file, int stream, str
                        snd_pcm_oss_simulate_fill(substream, delay);
                info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
        } else {
-               delay = snd_pcm_oss_bytes(substream, delay) + fixup;
-               info.blocks = delay / runtime->oss.period_bytes;
-               if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+               delay = snd_pcm_oss_bytes(substream, delay);
+               if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+                       struct snd_pcm_oss_setup *setup = substream->oss.setup;
+                       if (setup && setup->buggyptr)
+                               info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
+                       else
+                               info.blocks = (delay + fixup) / runtime->oss.period_bytes;
                        info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
-               else
+               } else {
+                       delay += fixup;
+                       info.blocks = delay / runtime->oss.period_bytes;
                        info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
+               }
        }
        if (copy_to_user(_info, &info, sizeof(info)))
                return -EFAULT;
        return 0;
 }
 
-static int snd_pcm_oss_get_space(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
+static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
 {
-       snd_pcm_substream_t *substream;
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_runtime *runtime;
        snd_pcm_sframes_t avail;
        int fixup;
        struct audio_buf_info info;
@@ -1599,17 +1619,17 @@ static int snd_pcm_oss_get_space(snd_pcm_oss_file_t *pcm_oss_file, int stream, s
        return 0;
 }
 
-static int snd_pcm_oss_get_mapbuf(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
+static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
 {
        // it won't be probably implemented
        // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
        return -EINVAL;
 }
 
-static snd_pcm_oss_setup_t *snd_pcm_oss_look_for_setup(snd_pcm_t *pcm, int stream, const char *task_name)
+static struct snd_pcm_oss_setup *snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, const char *task_name)
 {
        const char *ptr, *ptrl;
-       snd_pcm_oss_setup_t *setup;
+       struct snd_pcm_oss_setup *setup;
 
        down(&pcm->streams[stream].oss.setup_mutex);
        for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) {
@@ -1639,11 +1659,11 @@ static snd_pcm_oss_setup_t *snd_pcm_oss_look_for_setup(snd_pcm_t *pcm, int strea
        return NULL;
 }
 
-static void snd_pcm_oss_init_substream(snd_pcm_substream_t *substream,
-                                      snd_pcm_oss_setup_t *setup,
+static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
+                                      struct snd_pcm_oss_setup *setup,
                                       int minor)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
 
        substream->oss.oss = 1;
        substream->oss.setup = setup;
@@ -1667,24 +1687,23 @@ static void snd_pcm_oss_init_substream(snd_pcm_substream_t *substream,
        runtime->oss.subdivision = 0;
 }
 
-static void snd_pcm_oss_release_substream(snd_pcm_substream_t *substream)
+static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_runtime *runtime;
        runtime = substream->runtime;
-       if (runtime->oss.buffer)
-               vfree(runtime->oss.buffer);
+       vfree(runtime->oss.buffer);
        snd_pcm_oss_plugin_clear(substream);
        substream->oss.file = NULL;
        substream->oss.oss = 0;
 }
 
-static int snd_pcm_oss_release_file(snd_pcm_oss_file_t *pcm_oss_file)
+static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
 {
        int cidx;
        snd_assert(pcm_oss_file != NULL, return -ENXIO);
        for (cidx = 0; cidx < 2; ++cidx) {
-               snd_pcm_substream_t *substream = pcm_oss_file->streams[cidx];
-               snd_pcm_runtime_t *runtime;
+               struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx];
+               struct snd_pcm_runtime *runtime;
                if (substream == NULL)
                        continue;
                runtime = substream->runtime;
@@ -1693,13 +1712,12 @@ static int snd_pcm_oss_release_file(snd_pcm_oss_file_t *pcm_oss_file)
                if (snd_pcm_running(substream))
                        snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
                snd_pcm_stream_unlock_irq(substream);
-               if (substream->open_flag) {
+               if (substream->ffile != NULL) {
                        if (substream->ops->hw_free != NULL)
                                substream->ops->hw_free(substream);
                        substream->ops->close(substream);
-                       substream->open_flag = 0;
+                       substream->ffile = NULL;
                }
-               substream->ffile = NULL;
                snd_pcm_oss_release_substream(substream);
                snd_pcm_release_substream(substream);
        }
@@ -1708,21 +1726,21 @@ static int snd_pcm_oss_release_file(snd_pcm_oss_file_t *pcm_oss_file)
 }
 
 static int snd_pcm_oss_open_file(struct file *file,
-                                snd_pcm_t *pcm,
-                                snd_pcm_oss_file_t **rpcm_oss_file,
+                                struct snd_pcm *pcm,
+                                struct snd_pcm_oss_file **rpcm_oss_file,
                                 int minor,
-                                snd_pcm_oss_setup_t *psetup,
-                                snd_pcm_oss_setup_t *csetup)
+                                struct snd_pcm_oss_setup *psetup,
+                                struct snd_pcm_oss_setup *csetup)
 {
        int err = 0;
-       snd_pcm_oss_file_t *pcm_oss_file;
-       snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL;
+       struct snd_pcm_oss_file *pcm_oss_file;
+       struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
        unsigned int f_mode = file->f_mode;
 
        snd_assert(rpcm_oss_file != NULL, return -EINVAL);
        *rpcm_oss_file = NULL;
 
-       pcm_oss_file = kcalloc(1, sizeof(*pcm_oss_file), GFP_KERNEL);
+       pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL);
        if (pcm_oss_file == NULL)
                return -ENOMEM;
 
@@ -1766,14 +1784,13 @@ static int snd_pcm_oss_open_file(struct file *file,
                        snd_pcm_oss_release_file(pcm_oss_file);
                        return err;
                }
-               psubstream->open_flag = 1;
+               psubstream->ffile = file;
                err = snd_pcm_hw_constraints_complete(psubstream);
                if (err < 0) {
                        snd_printd("snd_pcm_hw_constraint_complete failed\n");
                        snd_pcm_oss_release_file(pcm_oss_file);
                        return err;
                }
-               psubstream->ffile = file;
                snd_pcm_oss_init_substream(psubstream, psetup, minor);
        }
        if (csubstream != NULL) {
@@ -1788,14 +1805,13 @@ static int snd_pcm_oss_open_file(struct file *file,
                        snd_pcm_oss_release_file(pcm_oss_file);
                        return err;
                }
-               csubstream->open_flag = 1;
+               csubstream->ffile = file;
                err = snd_pcm_hw_constraints_complete(csubstream);
                if (err < 0) {
                        snd_printd("snd_pcm_hw_constraint_complete failed\n");
                        snd_pcm_oss_release_file(pcm_oss_file);
                        return err;
                }
-               csubstream->ffile = file;
                snd_pcm_oss_init_substream(csubstream, csetup, minor);
        }
 
@@ -1805,31 +1821,29 @@ static int snd_pcm_oss_open_file(struct file *file,
 }
 
 
+static int snd_task_name(struct task_struct *task, char *name, size_t size)
+{
+       unsigned int idx;
+
+       snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL);
+       for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++)
+               name[idx] = task->comm[idx];
+       name[idx] = '\0';
+       return 0;
+}
+
 static int snd_pcm_oss_open(struct inode *inode, struct file *file)
 {
-       int minor = iminor(inode);
-       int cardnum = SNDRV_MINOR_OSS_CARD(minor);
-       int device;
        int err;
        char task_name[32];
-       snd_pcm_t *pcm;
-       snd_pcm_oss_file_t *pcm_oss_file;
-       snd_pcm_oss_setup_t *psetup = NULL, *csetup = NULL;
+       struct snd_pcm *pcm;
+       struct snd_pcm_oss_file *pcm_oss_file;
+       struct snd_pcm_oss_setup *psetup = NULL, *csetup = NULL;
        int nonblock;
        wait_queue_t wait;
-       static char printed_comm[16];
-
-       if (strncmp(printed_comm, current->comm, 16)) {
-               printk(KERN_DEBUG "application %s uses obsolete OSS audio interface\n",
-                      current->comm);
-               memcpy(printed_comm, current->comm, 16);
-       }
-
-       snd_assert(cardnum >= 0 && cardnum < SNDRV_CARDS, return -ENXIO);
-       device = SNDRV_MINOR_OSS_DEVICE(minor) == SNDRV_MINOR_OSS_PCM1 ?
-               adsp_map[cardnum] : dsp_map[cardnum];
 
-       pcm = snd_pcm_devices[(cardnum * SNDRV_PCM_DEVICES) + device];
+       pcm = snd_lookup_oss_minor_data(iminor(inode),
+                                       SNDRV_OSS_DEVICE_TYPE_PCM);
        if (pcm == NULL) {
                err = -ENODEV;
                goto __error1;
@@ -1870,7 +1884,7 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file)
        down(&pcm->open_mutex);
        while (1) {
                err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file,
-                                           minor, psetup, csetup);
+                                           iminor(inode), psetup, csetup);
                if (err >= 0)
                        break;
                if (err == -EAGAIN) {
@@ -1905,9 +1919,9 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file)
 
 static int snd_pcm_oss_release(struct inode *inode, struct file *file)
 {
-       snd_pcm_t *pcm;
-       snd_pcm_substream_t *substream;
-       snd_pcm_oss_file_t *pcm_oss_file;
+       struct snd_pcm *pcm;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_oss_file *pcm_oss_file;
 
        pcm_oss_file = file->private_data;
        substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
@@ -1925,10 +1939,9 @@ static int snd_pcm_oss_release(struct inode *inode, struct file *file)
        return 0;
 }
 
-static inline int _snd_pcm_oss_ioctl(struct inode *inode, struct file *file,
-                                    unsigned int cmd, unsigned long arg)
+static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-       snd_pcm_oss_file_t *pcm_oss_file;
+       struct snd_pcm_oss_file *pcm_oss_file;
        int __user *p = (int __user *)arg;
        int res;
 
@@ -1939,7 +1952,7 @@ static inline int _snd_pcm_oss_ioctl(struct inode *inode, struct file *file,
                return put_user(1, p);
 #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
        if (((cmd >> 8) & 0xff) == 'M') {       /* mixer ioctl - for OSS compatibility */
-               snd_pcm_substream_t *substream;
+               struct snd_pcm_substream *substream;
                int idx;
                for (idx = 0; idx < 2; ++idx) {
                        substream = pcm_oss_file->streams[idx];
@@ -2085,21 +2098,17 @@ static inline int _snd_pcm_oss_ioctl(struct inode *inode, struct file *file,
        return -EINVAL;
 }
 
-/* FIXME: need to unlock BKL to allow preemption */
-static int snd_pcm_oss_ioctl(struct inode *inode, struct file *file,
-                            unsigned int cmd, unsigned long arg)
-{
-       int err;
-       unlock_kernel();
-       err = _snd_pcm_oss_ioctl(inode, file, cmd, arg);
-       lock_kernel();
-       return err;
-}
+#ifdef CONFIG_COMPAT
+/* all compatible */
+#define snd_pcm_oss_ioctl_compat       snd_pcm_oss_ioctl
+#else
+#define snd_pcm_oss_ioctl_compat       NULL
+#endif
 
 static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
 {
-       snd_pcm_oss_file_t *pcm_oss_file;
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_oss_file *pcm_oss_file;
+       struct snd_pcm_substream *substream;
 
        pcm_oss_file = file->private_data;
        substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
@@ -2118,35 +2127,33 @@ static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t coun
 
 static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
 {
-       snd_pcm_oss_file_t *pcm_oss_file;
-       snd_pcm_substream_t *substream;
+       struct snd_pcm_oss_file *pcm_oss_file;
+       struct snd_pcm_substream *substream;
        long result;
 
        pcm_oss_file = file->private_data;
        substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
        if (substream == NULL)
                return -ENXIO;
-       up(&file->f_dentry->d_inode->i_sem);
        result = snd_pcm_oss_write1(substream, buf, count);
-       down(&file->f_dentry->d_inode->i_sem);
 #ifdef OSS_DEBUG
        printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result);
 #endif
        return result;
 }
 
-static int snd_pcm_oss_playback_ready(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        if (atomic_read(&runtime->mmap_count))
                return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
        else
                return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames;
 }
 
-static int snd_pcm_oss_capture_ready(snd_pcm_substream_t *substream)
+static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
 {
-       snd_pcm_runtime_t *runtime = substream->runtime;
+       struct snd_pcm_runtime *runtime = substream->runtime;
        if (atomic_read(&runtime->mmap_count))
                return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
        else
@@ -2155,9 +2162,9 @@ static int snd_pcm_oss_capture_ready(snd_pcm_substream_t *substream)
 
 static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
 {
-       snd_pcm_oss_file_t *pcm_oss_file;
+       struct snd_pcm_oss_file *pcm_oss_file;
        unsigned int mask;
-       snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL;
+       struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
        
        pcm_oss_file = file->private_data;
 
@@ -2166,7 +2173,7 @@ static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
 
        mask = 0;
        if (psubstream != NULL) {
-               snd_pcm_runtime_t *runtime = psubstream->runtime;
+               struct snd_pcm_runtime *runtime = psubstream->runtime;
                poll_wait(file, &runtime->sleep, wait);
                snd_pcm_stream_lock_irq(psubstream);
                if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
@@ -2176,8 +2183,8 @@ static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
                snd_pcm_stream_unlock_irq(psubstream);
        }
        if (csubstream != NULL) {
-               snd_pcm_runtime_t *runtime = csubstream->runtime;
-               enum sndrv_pcm_state ostate;
+               struct snd_pcm_runtime *runtime = csubstream->runtime;
+               snd_pcm_state_t ostate;
                poll_wait(file, &runtime->sleep, wait);
                snd_pcm_stream_lock_irq(csubstream);
                if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING ||
@@ -2185,7 +2192,7 @@ static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
                        mask |= POLLIN | POLLRDNORM;
                snd_pcm_stream_unlock_irq(csubstream);
                if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) {
-                       snd_pcm_oss_file_t ofile;
+                       struct snd_pcm_oss_file ofile;
                        memset(&ofile, 0, sizeof(ofile));
                        ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
                        runtime->oss.trigger = 0;
@@ -2198,9 +2205,9 @@ static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
 
 static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
 {
-       snd_pcm_oss_file_t *pcm_oss_file;
-       snd_pcm_substream_t *substream = NULL;
-       snd_pcm_runtime_t *runtime;
+       struct snd_pcm_oss_file *pcm_oss_file;
+       struct snd_pcm_substream *substream = NULL;
+       struct snd_pcm_runtime *runtime;
        int err;
 
 #ifdef OSS_DEBUG
@@ -2260,15 +2267,16 @@ static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
        return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  *  /proc interface
  */
 
-static void snd_pcm_oss_proc_read(snd_info_entry_t *entry,
-                                 snd_info_buffer_t * buffer)
+static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
+                                 struct snd_info_buffer *buffer)
 {
-       snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data;
-       snd_pcm_oss_setup_t *setup = pstr->oss.setup_list;
+       struct snd_pcm_str *pstr = entry->private_data;
+       struct snd_pcm_oss_setup *setup = pstr->oss.setup_list;
        down(&pstr->oss.setup_mutex);
        while (setup) {
                snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n",
@@ -2286,11 +2294,11 @@ static void snd_pcm_oss_proc_read(snd_info_entry_t *entry,
        up(&pstr->oss.setup_mutex);
 }
 
-static void snd_pcm_oss_proc_free_setup_list(snd_pcm_str_t * pstr)
+static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
 {
        unsigned int idx;
-       snd_pcm_substream_t *substream;
-       snd_pcm_oss_setup_t *setup, *setupn;
+       struct snd_pcm_substream *substream;
+       struct snd_pcm_oss_setup *setup, *setupn;
 
        for (idx = 0, substream = pstr->substream;
             idx < pstr->substream_count; idx++, substream = substream->next)
@@ -2304,13 +2312,13 @@ static void snd_pcm_oss_proc_free_setup_list(snd_pcm_str_t * pstr)
        pstr->oss.setup_list = NULL;
 }
 
-static void snd_pcm_oss_proc_write(snd_info_entry_t *entry,
-                                  snd_info_buffer_t * buffer)
+static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
+                                  struct snd_info_buffer *buffer)
 {
-       snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data;
-       char line[256], str[32], task_name[32], *ptr;
+       struct snd_pcm_str *pstr = entry->private_data;
+       char line[128], str[32], task_name[32], *ptr;
        int idx1;
-       snd_pcm_oss_setup_t *setup, *setup1, template;
+       struct snd_pcm_oss_setup *setup, *setup1, template;
 
        while (!snd_info_get_line(buffer, line, sizeof(line))) {
                down(&pstr->oss.setup_mutex);
@@ -2350,10 +2358,12 @@ static void snd_pcm_oss_proc_write(snd_info_entry_t *entry,
                                template.partialfrag = 1;
                        } else if (!strcmp(str, "no-silence")) {
                                template.nosilence = 1;
+                       } else if (!strcmp(str, "buggy-ptr")) {
+                               template.buggyptr = 1;
                        }
                } while (*str);
                if (setup == NULL) {
-                       setup = (snd_pcm_oss_setup_t *) kmalloc(sizeof(snd_pcm_oss_setup_t), GFP_KERNEL);
+                       setup = kmalloc(sizeof(struct snd_pcm_oss_setup), GFP_KERNEL);
                        if (setup) {
                                if (pstr->oss.setup_list == NULL) {
                                        pstr->oss.setup_list = setup;
@@ -2361,7 +2371,7 @@ static void snd_pcm_oss_proc_write(snd_info_entry_t *entry,
                                        for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next);
                                        setup1->next = setup;
                                }
-                               template.task_name = snd_kmalloc_strdup(task_name, GFP_KERNEL);
+                               template.task_name = kstrdup(task_name, GFP_KERNEL);
                        } else {
                                buffer->error = -ENOMEM;
                        }
@@ -2372,12 +2382,12 @@ static void snd_pcm_oss_proc_write(snd_info_entry_t *entry,
        }
 }
 
-static void snd_pcm_oss_proc_init(snd_pcm_t *pcm)
+static void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
 {
        int stream;
        for (stream = 0; stream < 2; ++stream) {
-               snd_info_entry_t *entry;
-               snd_pcm_str_t *pstr = &pcm->streams[stream];
+               struct snd_info_entry *entry;
+               struct snd_pcm_str *pstr = &pcm->streams[stream];
                if (pstr->substream_count == 0)
                        continue;
                if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) {
@@ -2397,11 +2407,11 @@ static void snd_pcm_oss_proc_init(snd_pcm_t *pcm)
        }
 }
 
-static void snd_pcm_oss_proc_done(snd_pcm_t *pcm)
+static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
 {
        int stream;
        for (stream = 0; stream < 2; ++stream) {
-               snd_pcm_str_t *pstr = &pcm->streams[stream];
+               struct snd_pcm_str *pstr = &pcm->streams[stream];
                if (pstr->oss.proc_entry) {
                        snd_info_unregister(pstr->oss.proc_entry);
                        pstr->oss.proc_entry = NULL;
@@ -2409,6 +2419,10 @@ static void snd_pcm_oss_proc_done(snd_pcm_t *pcm)
                }
        }
 }
+#else /* !CONFIG_PROC_FS */
+#define snd_pcm_oss_proc_init(pcm)
+#define snd_pcm_oss_proc_done(pcm)
+#endif /* CONFIG_PROC_FS */
 
 /*
  *  ENTRY functions
@@ -2422,28 +2436,24 @@ static struct file_operations snd_pcm_oss_f_reg =
        .open =         snd_pcm_oss_open,
        .release =      snd_pcm_oss_release,
        .poll =         snd_pcm_oss_poll,
-       .ioctl =        snd_pcm_oss_ioctl,
+       .unlocked_ioctl =       snd_pcm_oss_ioctl,
+       .compat_ioctl = snd_pcm_oss_ioctl_compat,
        .mmap =         snd_pcm_oss_mmap,
 };
 
-static snd_minor_t snd_pcm_oss_reg =
-{
-       .comment =      "digital audio",
-       .f_ops =        &snd_pcm_oss_f_reg,
-};
-
-static void register_oss_dsp(snd_pcm_t *pcm, int index)
+static void register_oss_dsp(struct snd_pcm *pcm, int index)
 {
        char name[128];
        sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
        if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
-                                   pcm->card, index, &snd_pcm_oss_reg,
-                                   name) < 0) {
-               snd_printk("unable to register OSS PCM device %i:%i\n", pcm->card->number, pcm->device);
+                                   pcm->card, index, &snd_pcm_oss_f_reg,
+                                   pcm, name) < 0) {
+               snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
+                          pcm->card->number, pcm->device);
        }
 }
 
-static int snd_pcm_oss_register_minor(snd_pcm_t * pcm)
+static int snd_pcm_oss_register_minor(struct snd_pcm *pcm)
 {
        pcm->oss.reg = 0;
        if (dsp_map[pcm->card->number] == (int)pcm->device) {
@@ -2474,7 +2484,7 @@ static int snd_pcm_oss_register_minor(snd_pcm_t * pcm)
        return 0;
 }
 
-static int snd_pcm_oss_disconnect_minor(snd_pcm_t * pcm)
+static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm)
 {
        if (pcm->oss.reg) {
                if (pcm->oss.reg_mask & 1) {
@@ -2491,7 +2501,7 @@ static int snd_pcm_oss_disconnect_minor(snd_pcm_t * pcm)
        return 0;
 }
 
-static int snd_pcm_oss_unregister_minor(snd_pcm_t * pcm)
+static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm)
 {
        snd_pcm_oss_disconnect_minor(pcm);
        if (pcm->oss.reg) {
@@ -2506,7 +2516,7 @@ static int snd_pcm_oss_unregister_minor(snd_pcm_t * pcm)
        return 0;
 }
 
-static snd_pcm_notify_t snd_pcm_oss_notify =
+static struct snd_pcm_notify snd_pcm_oss_notify =
 {
        .n_register =   snd_pcm_oss_register_minor,
        .n_disconnect = snd_pcm_oss_disconnect_minor,
@@ -2521,11 +2531,13 @@ static int __init alsa_pcm_oss_init(void)
        /* check device map table */
        for (i = 0; i < SNDRV_CARDS; i++) {
                if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) {
-                       snd_printk("invalid dsp_map[%d] = %d\n", i, dsp_map[i]);
+                       snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n",
+                                  i, dsp_map[i]);
                        dsp_map[i] = 0;
                }
                if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) {
-                       snd_printk("invalid adsp_map[%d] = %d\n", i, adsp_map[i]);
+                       snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n",
+                                  i, adsp_map[i]);
                        adsp_map[i] = 1;
                }
        }