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Commit 6450e509 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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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: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 42fc5b42

drivers/staging/media/msi3101/sdr-msi3101.c

+12 −3
Original line number Diff line number Diff line
@@ -432,7 +432,7 @@ static struct msi3101_frame_buf *msi3101_get_next_fill_buf( 


/*

 * +===========================================================================

 * |   00-1024 | USB packet

 * |   00-1023 | USB packet

 * +===========================================================================

 * |   00-  03 | sequence number of first sample in that USB packet

 * +---------------------------------------------------------------------------
@@ -462,7 +462,7 @@ static struct msi3101_frame_buf *msi3101_get_next_fill_buf( 
 * +---------------------------------------------------------------------------

 * |  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++) {