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[media] v4l2-dv-timings: only check standards if non-zero 

If one or both of the timings being compared have the standards field
with value 0, then accept that. Only check for matching standards if
both timings have actually filled in that field.

Otherwise no match will ever be found since when timings are detected
the standards field will typically be set to 0 by the driver.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2014-09-20 07:36:38 -03:00 committed by Mauro Carvalho Chehab
parent 62f28725a8
commit c166845c9c
1 changed files with 2 additions and 1 deletions
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3
drivers/media/v4l2-core/v4l2-dv-timings.c
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@ -164,7 +164,8 @@ bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t,
bt->width > cap->max_width ||
bt->pixelclock < cap->min_pixelclock ||
bt->pixelclock > cap->max_pixelclock ||
(cap->standards && !(bt->standards & cap->standards)) ||
(cap->standards && bt->standards &&
!(bt->standards & cap->standards)) ||
(bt->interlaced && !(caps & V4L2_DV_BT_CAP_INTERLACED)) ||
(!bt->interlaced && !(caps & V4L2_DV_BT_CAP_PROGRESSIVE)))
return false;