drm/rockchip: add rk3399 vop big csc support

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_dsi_panel_vbt.c

diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index a5e99ac305daab3ef69471d37b0ec9a97a27425c..a8912aecc31f0de663425fd6c3e868eeac5746f2 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -207,7 +207,12 @@ 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);
+               goto out;
+       }
 
        function = gtable[gpio].function_reg;
        pad = gtable[gpio].pad_reg;
@@ -226,6 +231,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
        vlv_gpio_nc_write(dev_priv, pad, val);
        mutex_unlock(&dev_priv->sb_lock);
 
+out:
        return data;
 }