drm/i915/sdvo: Don't unpack stack garbage

Pass the length returned by intel_sdvo_read_infoframe() to
hdmi_infoframe_unpack() so that we don't try to unpack any
leftover stack garbage.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409144054.24561-6-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä 2019-04-09 17:40:52 +03:00
parent b5716a4efe
commit 700bbf83ea

View File

@ -1132,7 +1132,7 @@ static void intel_sdvo_get_avi_infoframe(struct intel_sdvo *intel_sdvo,
crtc_state->infoframes.enable |=
intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI);
ret = hdmi_infoframe_unpack(frame, sdvo_data, sizeof(sdvo_data));
ret = hdmi_infoframe_unpack(frame, sdvo_data, len);
if (ret) {
DRM_DEBUG_KMS("Failed to unpack AVI infoframe\n");
return;