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authorAntti Palosaari <crope@iki.fi>2013-09-15 13:21:20 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2013-09-24 13:30:35 -0300
commitc0c7203640ffed8837fc4484795760eb19814ce8 (patch)
treeeea50dda9775a08e8faa4add3ed2b1fef859086e /drivers/staging/media/msi3101
parent4964c9c82878c492f42d5763ec8e98766717a980 (diff)
[media] msi3101: correct max videobuf2 alloc
There was too small buffers requested in worst case. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/staging/media/msi3101')
-rw-r--r--drivers/staging/media/msi3101/sdr-msi3101.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/staging/media/msi3101/sdr-msi3101.c b/drivers/staging/media/msi3101/sdr-msi3101.c
index 7715c85064d7..4c3bf776bb20 100644
--- a/drivers/staging/media/msi3101/sdr-msi3101.c
+++ b/drivers/staging/media/msi3101/sdr-msi3101.c
@@ -1131,7 +1131,13 @@ static int msi3101_queue_setup(struct vb2_queue *vq,
/* Absolute min and max number of buffers available for mmap() */
*nbuffers = 32;
*nplanes = 1;
- sizes[0] = PAGE_ALIGN(3 * 3072); /* 3 * 768 * 4 */
+ /*
+ * 3, wMaxPacketSize 3x 1024 bytes
+ * 504, max IQ sample pairs per 1024 frame
+ * 2, two samples, I and Q
+ * 4, 32-bit float
+ */
+ sizes[0] = PAGE_ALIGN(3 * 504 * 2 * 4); /* = 12096 */
dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n",
__func__, *nbuffers, sizes[0]);
return 0;