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@xxxxxxxxxxxxxxx
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index 4775aa5462e8..6f013efba45b 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);
--
2.1.4
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