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V4L/DVB (12790): tm6000: check for errors on usb->status

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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2007-08-27 07:55:05 -03:00 committed by Mauro Carvalho Chehab
parent 5c0d0b21fd
commit 5f796752e8
1 changed files with 51 additions and 34 deletions
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85
drivers/staging/tm6000/tm6000-video.c
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@ -163,7 +163,7 @@ static void inline buffer_filled (struct tm6000_core *dev,
struct tm6000_buffer *buf)
{
/* Advice that buffer was filled */
dprintk(dev, V4L2_DEBUG_QUEUE, "[%p/%d] wakeup\n",buf,buf->vb.i);
dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n",buf,buf->vb.i);
buf->vb.state = STATE_DONE;
buf->vb.field_count++;
do_gettimeofday(&buf->vb.ts);
@ -314,7 +314,7 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len,
pos=0;
/* Announces that a new buffer were filled */
buffer_filled (dev, *buf);
dprintk(dev, V4L2_DEBUG_QUEUE, "new buffer filled\n");
dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
rc=get_next_buf (dma_q, buf);
if (rc<=0) {
@ -329,6 +329,47 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len,
return rc;
}
static void inline print_err_status (struct tm6000_core *dev,
int packet, int status)
{
char *errmsg = "Unknown";
switch(status) {
case -ENOENT:
errmsg = "unlinked synchronuously";
break;
case -ECONNRESET:
errmsg = "unlinked asynchronuously";
break;
case -ENOSR:
errmsg = "Buffer error (overrun)";
break;
case -EPIPE:
errmsg = "Stalled (device not responding)";
break;
case -EOVERFLOW:
errmsg = "Babble (bad cable?)";
break;
case -EPROTO:
errmsg = "Bit-stuff error (bad cable?)";
break;
case -EILSEQ:
errmsg = "CRC/Timeout (could be anything)";
break;
case -ETIME:
errmsg = "Device does not respond";
break;
}
if (packet<0) {
dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
status, errmsg);
} else {
dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
/*
* Controls the isoc copy of each urb packet
*/
@ -344,42 +385,18 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf)
copied=0;
if (urb->status<0) {
print_err_status (dev,-1,urb->status);
return 0;
}
for (i = 0; i < urb->number_of_packets; i++) {
int status = urb->iso_frame_desc[i].status;
char *errmsg = "Unknown";
switch(status) {
case -ENOENT:
errmsg = "unlinked synchronuously";
break;
case -ECONNRESET:
errmsg = "unlinked asynchronuously";
break;
case -ENOSR:
errmsg = "Buffer error (overrun)";
break;
case -EPIPE:
errmsg = "Stalled (device not responding)";
break;
case -EOVERFLOW:
errmsg = "Babble (bad cable?)";
break;
case -EPROTO:
errmsg = "Bit-stuff error (bad cable?)";
break;
case -EILSEQ:
errmsg = "CRC/Timeout (could be anything)";
break;
case -ETIME:
errmsg = "Device does not respond";
break;
}
dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
status, errmsg);
if (status<0)
if (status<0) {
print_err_status (dev,i,status);
continue;
}
len=urb->iso_frame_desc[i].actual_length;
@ -402,7 +419,7 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf)
if (((*buf)->fmt->fourcc)!=V4L2_PIX_FMT_TM6000) {
buffer_filled (dev, *buf);
dprintk(dev, V4L2_DEBUG_QUEUE, "new buffer filled\n");
dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
}
return rc;