gma500: medfield: Fix possible NULL pointer dereference

The use of pointer sender should be after the NULL check.

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>

diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_output.c b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
index 2d4ab48..3abf831 100644 (file)
--- a/drivers/gpu/drm/gma500/mdfld_dsi_output.c
+++ b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
@@ -92,8 +92,8 @@ void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
 {
        struct mdfld_dsi_pkg_sender *sender =
                                mdfld_dsi_get_pkg_sender(dsi_config);
-       struct drm_device *dev = sender->dev;
-       struct drm_psb_private *dev_priv = dev->dev_private;
+       struct drm_device *dev;
+       struct drm_psb_private *dev_priv;
        u32 gen_ctrl_val;
 
        if (!sender) {
@@ -101,6 +101,9 @@ void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
                return;
        }
 
+       dev = sender->dev;
+       dev_priv = dev->dev_private;
+
        /* Set default display backlight value to 85% (0xd8)*/
        mdfld_dsi_send_mcs_short(sender, write_display_brightness, 0xd8, 1,
                                true);