Commit 222d0fa4 authored by Jani Nikula's avatar Jani Nikula Committed by Greg Kroah-Hartman

drm/i915/dsi: don't pass arbitrary data to sideband

commit 26f6f2d3 upstream.

Since sequence block v2 the second byte contains flags other than just
pull up/down. Don't pass arbitrary data to the sideband interface.

The rest may or may not work for sequence block v2, but there should be
no harm done.
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/ebe3c2eee623afc4b3a134533b01f8d591d13f32.1454582914.git.jani.nikula@intel.com
(cherry picked from commit 4e1c63e3)
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7a35478f
......@@ -207,7 +207,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
gpio = *data++;
/* pull up/down */
action = *data++;
action = *data++ & 1;
if (gpio >= ARRAY_SIZE(gtable)) {
DRM_DEBUG_KMS("unknown gpio %u\n", gpio);
......
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