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path: root/drivers/media/video/cx231xx/cx231xx-audio.c
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Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-audio.c')
-rw-r--r--drivers/media/video/cx231xx/cx231xx-audio.c24
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 30d13c15739a..a2c2b7d343ec 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:
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