[Intel-gfx] [PATCH] drm/i915: KW fix in intel_dsi_dcs_backlight.c

[Balasubramaniam, Hari Chand]

variable 'data' might be used uninitialized in this function.

Thus, adding NULL initialized to 'data' variable.

SQUASHME! - This patch should be squashed into following existing patch

        Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
        Author: Deepak M <m.deepak at intel.com>
	Date:   Wed Apr 19 15:49:02 2017 +0800

    	  drm/i915/dsi: Add DCS control for Panel PWM

    	  If the source of the backlight PWM is from the
    	  panel then the PWM can be controlled by DCS
    	  command, this patch adds the support to
    	  enable/disbale panel PWM, control backlight level
    	  etc...

    	  v2: Moving the CABC bkl functions to new file.(Jani)

    	  v3: Rebase

    	  v4: Rebase

    	  v5: Use mipi_dsi_dcs_write() instead of mipi_dsi_dcs_write_buffer() (Jani)
              Move DCS macro`s to include/video/mipi_display.h (Jani)

    	  v6: Rename the file to intel_dsi_panel_pwm.c
              Removing the CABC operations

    	  v7 by Jani: renames, rebases, etc.

    	  v8 by Jani: s/INTEL_BACKLIGHT_CABC/INTEL_BACKLIGHT_DSI_DCS/

    	  v9 by Jani: rename init function to intel_dsi_dcs_init_backlight_funcs

    	  Cc: Jani Nikula <jani.nikula at intel.com>
    	  Cc: Daniel Vetter <daniel.vetter at intel.com>
    	  Cc: Yetunde Adebisi <yetundex.adebisi at intel.com>
    	  Signed-off-by: Deepak M <m.deepak at intel.com>
    	  Reviewed-by: Yetunde Adebisi <yetundex.adebisi at intel.com>
    	  Signed-off-by: Jani Nikula <jani.nikula at intel.com>
    	  Link: http://patchwork.freedesktop.org/patch/msgid/71238a4b14b8c3a6c04070c789f09f1b4bc00a15.1461676337.git.jani.nikula@intel.com
    	  (cherry picked from commit 90198355b83c79e2158ec591085858b191f08502)
    	  Signed-off-by: Matt Roper <matthew.d.roper at intel.com>

    	  Change-Id: Icab0769c56fbb59f24d35fcb0a14c21a858bf8ac

Change-Id: Ib16bdda6c1950efddf66e31ab3172a2a17b09bc9
Signed-off-by: Balasubramaniam, Hari Chand <hari.chand.balasubramaniam at intel.com>
---
 drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c b/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c
index ac7c602..eec4585 100644
--- a/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c
+++ b/drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c
@@ -46,7 +46,7 @@ static u32 dcs_get_backlight(struct intel_connector *connector)
 	struct intel_encoder *encoder = connector->encoder;
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	struct mipi_dsi_device *dsi_device;
-	u8 data;
+	u8 data = 0;
 	enum port port;
 
 	/* FIXME: Need to take care of 16 bit brightness level */
-- 
1.9.1