V4L/DVB: uvcvideo: Clamp control values to the minimum and maximum values

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When setting a control, the V4L2 specification requires drivers to
either clamp the control value to the [minimum, maximum] range or return
the -ERANGE error.

Fix the driver to clamp control values to the valid range in
uvc_ctrl_set() and make sure the value differs from the minimum by an
integer multiple of step.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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This commit is contained in:

Laurent Pinchart 2010-01-23 07:07:53 -03:00 • committed by Mauro Carvalho Chehab

parent 59529081e0

commit e54532e591

2 changed files with 45 additions and 4 deletions

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47

drivers/media/video/uvc/uvc_ctrl.c

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2

drivers/media/video/uvc/uvc_v4l2.c

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