MLK-12218 video: mxsfb: fix a potential unitialized pointer dereference

The 'rgb' pointer may be dereferenced before being initialized.
So correct this.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>

diff --git a/drivers/video/fbdev/mxsfb.c b/drivers/video/fbdev/mxsfb.c
index 7dea1ee..f9832e5 100644 (file)
--- a/drivers/video/fbdev/mxsfb.c
+++ b/drivers/video/fbdev/mxsfb.c
@@ -465,7 +465,7 @@ static int mxsfb_check_var(struct fb_var_screeninfo *var,
                switch (host->ld_intf_width) {
                case STMLCDIF_8BIT:
                        pr_debug("Unsupported LCD bus width mapping\n");
-                       break;
+                       return -EINVAL;
                case STMLCDIF_16BIT:
                        /* 24 bit to 18 bit mapping */
                        rgb = def_rgb666;