diff options
Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-audio.c')
| -rw-r--r-- | drivers/media/video/cx231xx/cx231xx-audio.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-audio.c b/drivers/media/video/cx231xx/cx231xx-audio.c index 30d13c15739..a2c2b7d343e 100644 --- a/drivers/media/video/cx231xx/cx231xx-audio.c +++ b/drivers/media/video/cx231xx/cx231xx-audio.c @@ -111,6 +111,9 @@ static void cx231xx_audio_isocirq(struct urb *urb) struct snd_pcm_substream *substream; struct snd_pcm_runtime *runtime; + if (dev->state & DEV_DISCONNECTED) + return; + switch (urb->status) { case 0: /* success */ case -ETIMEDOUT: /* NAK */ @@ -196,6 +199,9 @@ static void cx231xx_audio_bulkirq(struct urb *urb) struct snd_pcm_substream *substream; struct snd_pcm_runtime *runtime; + if (dev->state & DEV_DISCONNECTED) + return; + switch (urb->status) { case 0: /* success */ case -ETIMEDOUT: /* NAK */ @@ -273,6 +279,9 @@ static int cx231xx_init_audio_isoc(struct cx231xx *dev) cx231xx_info("%s: Starting ISO AUDIO transfers\n", __func__); + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + sb_size = CX231XX_ISO_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size; for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { @@ -298,7 +307,7 @@ static int cx231xx_init_audio_isoc(struct cx231xx *dev) urb->context = dev; urb->pipe = usb_rcvisocpipe(dev->udev, dev->adev.end_point_addr); - urb->transfer_flags = URB_ISO_ASAP; + urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; urb->transfer_buffer = dev->adev.transfer_buffer[i]; urb->interval = 1; urb->complete = cx231xx_audio_isocirq; @@ -331,6 +340,9 @@ static int cx231xx_init_audio_bulk(struct cx231xx *dev) cx231xx_info("%s: Starting BULK AUDIO transfers\n", __func__); + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + sb_size = CX231XX_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size; for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { @@ -356,7 +368,7 @@ static int cx231xx_init_audio_bulk(struct cx231xx *dev) urb->context = dev; urb->pipe = usb_rcvbulkpipe(dev->udev, dev->adev.end_point_addr); - urb->transfer_flags = 0; + urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; urb->transfer_buffer = dev->adev.transfer_buffer[i]; urb->complete = cx231xx_audio_bulkirq; urb->transfer_buffer_length = sb_size; @@ -432,6 +444,11 @@ static int snd_cx231xx_capture_open(struct snd_pcm_substream *substream) return -ENODEV; } + if (dev->state & DEV_DISCONNECTED) { + cx231xx_errdev("Can't open. the device was removed.\n"); + return -ENODEV; + } + /* Sets volume, mute, etc */ dev->mute = 0; @@ -571,6 +588,9 @@ static int snd_cx231xx_capture_trigger(struct snd_pcm_substream *substream, struct cx231xx *dev = snd_pcm_substream_chip(substream); int retval; + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + spin_lock(&dev->adev.slock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: |