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[PATCH] v4l: 864: improved isoc error detection

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- Improved isoc error detection.

Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mauro Carvalho Chehab 2005-11-08 21:38:16 -08:00 committed by Linus Torvalds
parent 45632c4f83
commit feff0485eb
1 changed files with 11 additions and 2 deletions
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13
drivers/media/video/em28xx/em28xx-core.c
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@ -573,8 +573,16 @@ static inline void em2820_isoc_video_copy(struct em2820 *dev,
if ((*f)->fieldbytesused + len > dev->field_size) if ((*f)->fieldbytesused + len > dev->field_size)
len =dev->field_size - (*f)->fieldbytesused; len =dev->field_size - (*f)->fieldbytesused;
if (buf[0] != 0x88 && buf[0] != 0x22) {
em2820_isocdbg("frame is not complete\n");
startread = buf;
len+=4;
} else
startread = buf + 4;
remain = len; remain = len;
startread = buf + 4;
if ((*f)->top_field) if ((*f)->top_field)
fieldstart = (*f)->bufmem; fieldstart = (*f)->bufmem;
else else
@ -653,7 +661,8 @@ void em2820_isocIrq(struct urb *urb, struct pt_regs *regs)
em2820_isocdbg("data error: [%d] len=%d, status=%d", i, em2820_isocdbg("data error: [%d] len=%d, status=%d", i,
urb->iso_frame_desc[i].actual_length, urb->iso_frame_desc[i].actual_length,
urb->iso_frame_desc[i].status); urb->iso_frame_desc[i].status);
continue; if (urb->iso_frame_desc[i].status != -EPROTO)
continue;
} }
if (urb->iso_frame_desc[i].actual_length <= 0) { if (urb->iso_frame_desc[i].actual_length <= 0) {
em2820_isocdbg("packet %d is empty",i); em2820_isocdbg("packet %d is empty",i);