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[media] msi3101: clamp mmap buffers to reasonable level

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That value is coming from the user and we need only ensure it is
reasonable. That was pointed by Hans when reviewing rtl2832_sdr driver.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2014-02-26 20:48:23 -03:00 committed by Mauro Carvalho Chehab
parent 2c57213fe0
commit d287e4e31e
1 changed files with 1 additions and 1 deletions
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drivers/staging/media/msi3101/sdr-msi3101.c
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@ -831,7 +831,7 @@ static int msi3101_queue_setup(struct vb2_queue *vq,
dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers);
/* Absolute min and max number of buffers available for mmap() */
*nbuffers = 32;
*nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32);
*nplanes = 1;
/*
* 3, wMaxPacketSize 3x 1024 bytes