video/hdmi: Fix AVI bar unpack

The bar values are little endian, not big endian. The pack
function did it right but the unpack got it wrong. Fix it.

Cc: stable@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: Martin Bugge <marbugge@cisco.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fixes: 2c676f378edb ("[media] hdmi: added unpack and logging functions for InfoFrames")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190919132853.30954-1-ville.syrjala@linux.intel.com
Reviewed-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
index b939bc2..9c82e2a 100644 (file)
--- a/drivers/video/hdmi.c
+++ b/drivers/video/hdmi.c
@@ -1576,12 +1576,12 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
        if (ptr[0] & 0x10)
                frame->active_aspect = ptr[1] & 0xf;
        if (ptr[0] & 0x8) {
-               frame->top_bar = (ptr[5] << 8) + ptr[6];
-               frame->bottom_bar = (ptr[7] << 8) + ptr[8];
+               frame->top_bar = (ptr[6] << 8) | ptr[5];
+               frame->bottom_bar = (ptr[8] << 8) | ptr[7];
        }
        if (ptr[0] & 0x4) {
-               frame->left_bar = (ptr[9] << 8) + ptr[10];
-               frame->right_bar = (ptr[11] << 8) + ptr[12];
+               frame->left_bar = (ptr[10] << 8) | ptr[9];
+               frame->right_bar = (ptr[12] << 8) | ptr[11];
        }
        frame->scan_mode = ptr[0] & 0x3;