diff options
| author | Douglas Schilling Landgraf <dougsland@redhat.com> | 2009-01-26 01:19:23 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 19:42:28 +0400 |
| commit | b124d597496fad3ba1ead7ed3b6c197c5b0a2ee7 (patch) | |
| tree | 3f8c565460c944097858dd6d3c483aa1881224e4 | |
| parent | 00bc0645f02ec0c3486a9f6af9b6167ce5eda62c (diff) | |
| download | linux-b124d597496fad3ba1ead7ed3b6c197c5b0a2ee7.tar.xz | |
V4L/DVB (10327): em28xx: Add check before call em28xx_isoc_audio_deinit()
Just call em28xx_isoc_audio_deinit() if em28xx sent a usb_submit().
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-audio.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c index 7a62c77b8485..43e8d7d91a96 100644 --- a/drivers/media/video/em28xx/em28xx-audio.c +++ b/drivers/media/video/em28xx/em28xx-audio.c @@ -61,7 +61,7 @@ static int em28xx_isoc_audio_deinit(struct em28xx *dev) int i; dprintk("Stopping isoc\n"); - for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { + for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { if (!irqs_disabled()) usb_kill_urb(dev->adev.urb[i]); else @@ -73,6 +73,7 @@ static int em28xx_isoc_audio_deinit(struct em28xx *dev) dev->adev.transfer_buffer[i] = NULL; } + dev->isoc_ctl.num_bufs = 0; return 0; } @@ -156,6 +157,8 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) dprintk("Starting isoc transfers\n"); + dev->isoc_ctl.num_bufs = 0; + for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { struct urb *urb; int j, k; @@ -197,10 +200,19 @@ static int em28xx_init_audio_isoc(struct em28xx *dev) for (i = 0; i < EM28XX_AUDIO_BUFS; i++) { errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC); if (errCode) { - em28xx_isoc_audio_deinit(dev); + if (dev->isoc_ctl.num_bufs == 0) { + usb_free_urb(dev->adev.urb[i]); + dev->adev.urb[i] = NULL; + kfree(dev->adev.transfer_buffer[i]); + dev->adev.transfer_buffer[i] = NULL; + } else + em28xx_isoc_audio_deinit(dev); return errCode; } + mutex_lock(&dev->lock); + dev->isoc_ctl.num_bufs++; + mutex_unlock(&dev->lock); } return 0; |