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Merge to kernel-2.6.20-1.2949.fc6.vs2.2.0.1
[linux-2.6.git]
/
sound
/
oss
/
emu10k1
/
passthrough.c
diff --git
a/sound/oss/emu10k1/passthrough.c
b/sound/oss/emu10k1/passthrough.c
index
4e3baca
..
6d21d43
100644
(file)
--- a/
sound/oss/emu10k1/passthrough.c
+++ b/
sound/oss/emu10k1/passthrough.c
@@
-162,12
+162,15
@@
ssize_t emu10k1_pt_write(struct file *file, const char __user *buffer, size_t co
DPD(3, "prepend size %d, prepending %d bytes\n", pt->prepend_size, needed);
if (count < needed) {
DPD(3, "prepend size %d, prepending %d bytes\n", pt->prepend_size, needed);
if (count < needed) {
- copy_from_user(pt->buf + pt->prepend_size, buffer, count);
+ if (copy_from_user(pt->buf + pt->prepend_size,
+ buffer, count))
+ return -EFAULT;
pt->prepend_size += count;
DPD(3, "prepend size now %d\n", pt->prepend_size);
return count;
}
pt->prepend_size += count;
DPD(3, "prepend size now %d\n", pt->prepend_size);
return count;
}
- copy_from_user(pt->buf + pt->prepend_size, buffer, needed);
+ if (copy_from_user(pt->buf + pt->prepend_size, buffer, needed))
+ return -EFAULT;
r = pt_putblock(wave_dev, (u16 *) pt->buf, nonblock);
if (r)
return r;
r = pt_putblock(wave_dev, (u16 *) pt->buf, nonblock);
if (r)
return r;
@@
-178,7
+181,8
@@
ssize_t emu10k1_pt_write(struct file *file, const char __user *buffer, size_t co
blocks_copied = 0;
while (blocks > 0) {
u16 __user *bufptr = (u16 __user *) buffer + (bytes_copied/2);
blocks_copied = 0;
while (blocks > 0) {
u16 __user *bufptr = (u16 __user *) buffer + (bytes_copied/2);
- copy_from_user(pt->buf, bufptr, PT_BLOCKSIZE);
+ if (copy_from_user(pt->buf, bufptr, PT_BLOCKSIZE))
+ return -EFAULT;
r = pt_putblock(wave_dev, (u16 *)pt->buf, nonblock);
if (r) {
if (bytes_copied)
r = pt_putblock(wave_dev, (u16 *)pt->buf, nonblock);
if (r) {
if (bytes_copied)
@@
-193,7
+197,8
@@
ssize_t emu10k1_pt_write(struct file *file, const char __user *buffer, size_t co
i = count - bytes_copied;
if (i) {
pt->prepend_size = i;
i = count - bytes_copied;
if (i) {
pt->prepend_size = i;
- copy_from_user(pt->buf, buffer + bytes_copied, i);
+ if (copy_from_user(pt->buf, buffer + bytes_copied, i))
+ return -EFAULT;
bytes_copied += i;
DPD(3, "filling prepend buffer with %d bytes", i);
}
bytes_copied += i;
DPD(3, "filling prepend buffer with %d bytes", i);
}