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[media] msi3101: add debug dump for unknown stream data 

Dump all unknown 'garbage' data - maybe we will discover someday if there
is something rational...
Also fix comment in USB frame description.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2013-07-31 19:58:12 -03:00 committed by Mauro Carvalho Chehab
parent 42fc5b4230
commit 6450e5091c
1 changed files with 12 additions and 3 deletions
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15
drivers/staging/media/msi3101/sdr-msi3101.c
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@ -432,7 +432,7 @@ leave:
/*
* +===========================================================================
* | 00-1024 | USB packet
* | 00-1023 | USB packet
* +===========================================================================
* | 00- 03 | sequence number of first sample in that USB packet
* +---------------------------------------------------------------------------
@ -462,7 +462,7 @@ leave:
* +---------------------------------------------------------------------------
* | 996- 999 | control bits for previous samples
* +---------------------------------------------------------------------------
* | 1000-1024 | garbage
* | 1000-1023 | garbage
* +---------------------------------------------------------------------------
*
* Bytes 4 - 7 could have some meaning?
@ -522,7 +522,7 @@ static u32 msi3101_convert_sample(struct msi3101_state *s, u16 x, int shift)
#define MSI3101_CONVERT_IN_URB_HANDLER
#define MSI3101_EXTENSIVE_DEBUG
static int msi3101_convert_stream(struct msi3101_state *s, u32 *dst,
const u8 *src, unsigned int src_len)
u8 *src, unsigned int src_len)
{
int i, j, k, l, i_max, dst_len = 0;
u16 sample[4];
@ -541,6 +541,15 @@ static int msi3101_convert_stream(struct msi3101_state *s, u32 *dst,
sample_num[0] - s->next_sample,
src_len, s->next_sample, sample_num[0]);
}
/*
* Dump all unknown 'garbage' data - maybe we will discover
* someday if there is something rational...
*/
dev_dbg_ratelimited(&s->udev->dev,
"%*ph %*ph\n", 12, &src[4], 24, &src[1000]);
memset(&src[4], 0, 12);
memset(&src[1000], 0, 24);
#endif
src += 16;
for (j = 0; j < 6; j++) {