video/hdmi: Reject illegal picture aspect ratios
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 8 May 2018 11:09:40 +0000 (16:39 +0530)
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fri, 11 May 2018 07:04:25 +0000 (09:04 +0200)
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
drivers/video/hdmi.c

index 111a0ab6280a06ebb719f8dd13e4f57df1ba7447..38716eb50408c0a8ab52be3cceaf7bce10a13031 100644 (file)
@@ -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;