On Thu, Feb 04, 2016 at 12:50:49PM +0200, Jani Nikula wrote:
> Do not blindly trust the VBT data used for indexing.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> index 1d43e6f37fc1..4775aa5462e8 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> @@ -209,6 +209,11 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
> /* pull up/down */
> action = *data++;
>
> + 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;
> }
>
> --
> 2.1.4
>
> _______________________________________________
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel OTC
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