[PATCH] pnx4008:fix NULL dereference in rgbfb

Fix possible NULL dereference in pnxrgbfb.
Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Cc: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/pnx4008/pnxrgbfb.c

@@ -154,7 +154,8 @@ static int __devinit rgbfb_probe(struct platform_device *pdev)
 			goto err1;
 	}
 
-	if (!fb_get_options("pnxrgbfb", &option) && !strcmp(option, "nocursor"))
+	if (!fb_get_options("pnxrgbfb", &option) && option &&
+			!strcmp(option, "nocursor"))
 		rgbfb_ops.fb_cursor = no_cursor;
 
 	info->node = -1;