diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2016-02-04 12:50:50 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-28 00:09:53 -0500 |
| commit | 6b20ea56ddee5353a29616692723c80793fb05c5 (patch) | |
| tree | c52e65c5d6ebba79f42b66f8eb8d0cf2c8a148b7 | |
| parent | 3c9dc5750d0c3052ba7a3bf0173ba429bc96f323 (diff) | |
drm/i915/dsi: don't pass arbitrary data to sideband
[ Upstream commit 26f6f2d301c1fb46acb1138ee155125815239b0d ]
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.
Cc: stable@vger.kernel.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/ebe3c2eee623afc4b3a134533b01f8d591d13f32.1454582914.git.jani.nikula@intel.com
(cherry picked from commit 4e1c63e3761b84ec7d87c75b58bbc8bcf18e98ee)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c index a5e8be0baf29..82f8e20cca74 100644 --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c @@ -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); |