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| author | Antoine Jacquet <royale@zerezo.com> | 2008-08-18 17:09:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:36:51 -0200 |
| commit | 69025c934b21a9ce49a76dfef59f1ebdfbe96c78 (patch) | |
| tree | a7dfe3af39d8e25d2bbb0b26042e5478be8c0e78 | |
| parent | 06fcadbf8b63e395d3ae8421a8c3cb2dfd0bc56b (diff) | |
| download | linux-stable-69025c934b21a9ce49a76dfef59f1ebdfbe96c78.tar.gz linux-stable-69025c934b21a9ce49a76dfef59f1ebdfbe96c78.tar.bz2 linux-stable-69025c934b21a9ce49a76dfef59f1ebdfbe96c78.zip | |
V4L/DVB (8731): zr364xx: remove BKL
Remove the Big Kernel Lock from zr364xx driver after pushdown.
Now using an internal locking mecanism on open().
Signed-off-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/zr364xx.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c index 4e1ef10d22df..9d5d5985a7ea 100644 --- a/drivers/media/video/zr364xx.c +++ b/drivers/media/video/zr364xx.c @@ -641,25 +641,23 @@ static int zr364xx_open(struct inode *inode, struct file *file) DBG("zr364xx_open"); + mutex_lock(&cam->lock); + cam->skip = 2; - lock_kernel(); err = video_exclusive_open(inode, file); - if (err < 0) { - unlock_kernel(); - return err; - } + if (err < 0) + goto out; if (!cam->framebuf) { cam->framebuf = vmalloc_32(MAX_FRAME_SIZE * FRAMES); if (!cam->framebuf) { info("vmalloc_32 failed!"); - unlock_kernel(); - return -ENOMEM; + err = -ENOMEM; + goto out; } } - mutex_lock(&cam->lock); for (i = 0; init[cam->method][i].size != -1; i++) { err = send_control_msg(udev, 1, init[cam->method][i].value, @@ -667,9 +665,7 @@ static int zr364xx_open(struct inode *inode, struct file *file) init[cam->method][i].size); if (err < 0) { info("error during open sequence: %d", i); - mutex_unlock(&cam->lock); - unlock_kernel(); - return err; + goto out; } } @@ -679,10 +675,11 @@ static int zr364xx_open(struct inode *inode, struct file *file) * like Ekiga does during its startup, can crash the webcam */ mdelay(100); + err = 0; +out: mutex_unlock(&cam->lock); - unlock_kernel(); - return 0; + return err; } |