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video/hdmi: Reject illegal picture aspect ratios

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AVI infoframe can only carry none, 4:3, or 16:9 picture aspect
ratios. Return an error if the user asked for something different.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: "Lin, Jia" <lin.a.jia@intel.com>
Cc: Akashdeep Sharma <akashdeep.sharma@intel.com>
Cc: Jim Bride <jim.bride@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-6-git-send-email-ankit.k.nautiyal@intel.com
This commit is contained in:
Ville Syrjälä 2018-05-08 16:39:40 +05:30 committed by Maarten Lankhorst
parent a9c266c27e
commit bfe2e2c956
1 changed files with 3 additions and 0 deletions
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3
drivers/video/hdmi.c
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@ -93,6 +93,9 @@ ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
if (size < length)
return -ENOSPC;
if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9)
return -EINVAL;
memset(buffer, 0, size);
ptr[0] = frame->type;