diff options
| author | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-08-09 23:14:21 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-08-21 15:25:10 -0500 |
| commit | 2930977ac5934540d876715fdf32b1dd6f405df5 (patch) | |
| tree | aa041b42c74722538999566039d9565623648b6f /drivers/media/usb/au0828 | |
| parent | bbc62a18b6d90da702d14f0d04f67de1e37ca790 (diff) | |
| download | talos-obmc-linux-2930977ac5934540d876715fdf32b1dd6f405df5.tar.gz talos-obmc-linux-2930977ac5934540d876715fdf32b1dd6f405df5.zip | |
[media] au0828: Fix DVB resume when streaming
When DVB is streaming and suspend is called, it will call
au0828_stop_transport(), with will clean the streaming flag.
Due to that, stop_urb_transfer() will be called twice,
causing an oops.
So, we need another flag to be used at resume, telling it
to restart DVB.
While here, add a logic at stop_urb_transfer() to prevent
it of being called twice, and convert the usb_streaming
flag into boolean.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/usb/au0828')
| -rw-r--r-- | drivers/media/usb/au0828/au0828-dvb.c | 14 | ||||
| -rw-r--r-- | drivers/media/usb/au0828/au0828.h | 4 |
2 files changed, 11 insertions, 7 deletions
diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c index bc4ea5397e92..821f86e92cde 100644 --- a/drivers/media/usb/au0828/au0828-dvb.c +++ b/drivers/media/usb/au0828/au0828-dvb.c @@ -121,7 +121,7 @@ static void urb_completion(struct urb *purb) return; } - if (dev->urb_streaming == 0) { + if (!dev->urb_streaming) { dprintk(2, "%s: not streaming!\n", __func__); return; } @@ -159,7 +159,10 @@ static int stop_urb_transfer(struct au0828_dev *dev) dprintk(2, "%s()\n", __func__); - dev->urb_streaming = 0; + if (!dev->urb_streaming) + return 0; + + dev->urb_streaming = false; for (i = 0; i < URB_COUNT; i++) { if (dev->urbs[i]) { usb_kill_urb(dev->urbs[i]); @@ -229,7 +232,7 @@ static int start_urb_transfer(struct au0828_dev *dev) } } - dev->urb_streaming = 1; + dev->urb_streaming = true; ret = 0; err: @@ -323,7 +326,7 @@ static void au0828_restart_dvb_streaming(struct work_struct *work) restart_streaming); struct au0828_dvb *dvb = &dev->dvb; - if (dev->urb_streaming == 0) + if (!dev->urb_streaming) return; dprintk(1, "Restarting streaming...!\n"); @@ -628,6 +631,7 @@ void au0828_dvb_suspend(struct au0828_dev *dev) stop_urb_transfer(dev); au0828_stop_transport(dev, 1); mutex_unlock(&dvb->lock); + dev->need_urb_start = 1; } } @@ -635,7 +639,7 @@ void au0828_dvb_resume(struct au0828_dev *dev) { struct au0828_dvb *dvb = &dev->dvb; - if (dvb->frontend && dev->urb_streaming) { + if (dvb->frontend && dev->need_urb_start) { pr_info("resuming DVB\n"); au0828_set_frontend(dvb->frontend); diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h index d187129b96b7..a7cc6e397fdd 100644 --- a/drivers/media/usb/au0828/au0828.h +++ b/drivers/media/usb/au0828/au0828.h @@ -267,8 +267,8 @@ struct au0828_dev { char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc transfer */ - /* USB / URB Related */ - int urb_streaming; + /* DVB USB / URB Related */ + bool urb_streaming, need_urb_start; struct urb *urbs[URB_COUNT]; /* Preallocated transfer digital transfer buffers */ |
