fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / scsi / sr.c

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 997f8e3..89e9b36 100644 (file)
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -60,6 +60,10 @@
 #include "sr.h"
 
 
+MODULE_DESCRIPTION("SCSI cdrom (sr) driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_CDROM_MAJOR);
+
 #define SR_DISKS       256
 
 #define MAX_RETRIES    3
@@ -67,7 +71,7 @@
 #define SR_CAPABILITIES \
        (CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|CDC_SELECT_SPEED| \
         CDC_SELECT_DISC|CDC_MULTI_SESSION|CDC_MCN|CDC_MEDIA_CHANGED| \
-        CDC_PLAY_AUDIO|CDC_RESET|CDC_IOCTLS|CDC_DRIVE_STATUS| \
+        CDC_PLAY_AUDIO|CDC_RESET|CDC_DRIVE_STATUS| \
         CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_DVD_RAM|CDC_GENERIC_PACKET| \
         CDC_MRW|CDC_MRW_W|CDC_RAM)
 
@@ -114,7 +118,6 @@ static struct cdrom_device_ops sr_dops = {
        .get_mcn                = sr_get_mcn,
        .reset                  = sr_reset,
        .audio_ioctl            = sr_audio_ioctl,
-       .dev_ioctl              = sr_dev_ioctl,
        .capability             = SR_CAPABILITIES,
        .generic_packet         = sr_packet,
 };
@@ -214,7 +217,7 @@ int sr_media_change(struct cdrom_device_info *cdi, int slot)
 static void rw_intr(struct scsi_cmnd * SCpnt)
 {
        int result = SCpnt->result;
-       int this_count = SCpnt->bufflen;
+       int this_count = SCpnt->request_bufflen;
        int good_bytes = (result == 0 ? this_count : 0);
        int block_sectors = 0;
        long error_sector;
@@ -289,7 +292,7 @@ static void rw_intr(struct scsi_cmnd * SCpnt)
         * how many actual sectors finished, and how many sectors we need
         * to say have failed.
         */
-       scsi_io_completion(SCpnt, good_bytes, block_sectors << 9);
+       scsi_io_completion(SCpnt, good_bytes);
 }
 
 static int sr_init_command(struct scsi_cmnd * SCpnt)
@@ -357,7 +360,7 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
                                "mismatch count %d, bytes %d\n",
                                size, SCpnt->request_bufflen);
                        if (SCpnt->request_bufflen > size)
-                               SCpnt->request_bufflen = SCpnt->bufflen = size;
+                               SCpnt->request_bufflen = size;
                }
        }
 
@@ -384,8 +387,7 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
 
        if (this_count > 0xffff) {
                this_count = 0xffff;
-               SCpnt->request_bufflen = SCpnt->bufflen =
-                               this_count * s_size;
+               SCpnt->request_bufflen = this_count * s_size;
        }
 
        SCpnt->cmnd[2] = (unsigned char) (block >> 24) & 0xff;
@@ -452,17 +454,33 @@ static int sr_block_ioctl(struct inode *inode, struct file *file, unsigned cmd,
 {
        struct scsi_cd *cd = scsi_cd(inode->i_bdev->bd_disk);
        struct scsi_device *sdev = cd->device;
+       void __user *argp = (void __user *)arg;
+       int ret;
 
-        /*
-         * Send SCSI addressing ioctls directly to mid level, send other
-         * ioctls to cdrom/block level.
-         */
-        switch (cmd) {
-                case SCSI_IOCTL_GET_IDLUN:
-                case SCSI_IOCTL_GET_BUS_NUMBER:
-                        return scsi_ioctl(sdev, cmd, (void __user *)arg);
+       /*
+        * Send SCSI addressing ioctls directly to mid level, send other
+        * ioctls to cdrom/block level.
+        */
+       switch (cmd) {
+       case SCSI_IOCTL_GET_IDLUN:
+       case SCSI_IOCTL_GET_BUS_NUMBER:
+               return scsi_ioctl(sdev, cmd, argp);
        }
-       return cdrom_ioctl(file, &cd->cdi, inode, cmd, arg);
+
+       ret = cdrom_ioctl(file, &cd->cdi, inode, cmd, arg);
+       if (ret != -ENOSYS)
+               return ret;
+
+       /*
+        * ENODEV means that we didn't recognise the ioctl, or that we
+        * cannot execute it in the current device state.  In either
+        * case fall through to scsi_ioctl, which will return ENDOEV again
+        * if it doesn't recognise the ioctl
+        */
+       ret = scsi_nonblockable_ioctl(sdev, cmd, argp, NULL);
+       if (ret != -ENODEV)
+               return ret;
+       return scsi_ioctl(sdev, cmd, argp);
 }
 
 static int sr_block_media_changed(struct gendisk *disk)
@@ -525,10 +543,9 @@ static int sr_probe(struct device *dev)
                goto fail;
 
        error = -ENOMEM;
-       cd = kmalloc(sizeof(*cd), GFP_KERNEL);
+       cd = kzalloc(sizeof(*cd), GFP_KERNEL);
        if (!cd)
                goto fail;
-       memset(cd, 0, sizeof(*cd));
 
        kref_init(&cd->kref);
 
@@ -574,8 +591,6 @@ static int sr_probe(struct device *dev)
        get_capabilities(cd);
        sr_vendor_init(cd);
 
-       snprintf(disk->devfs_name, sizeof(disk->devfs_name),
-                       "%s/cd", sdev->devfs_name);
        disk->driverfs_dev = &sdev->sdev_gendev;
        set_capacity(disk, cd->capacity);
        disk->private_data = &cd->driver;