video: omapdss: Fix potential null pointer dereference

kmalloc can return null. Add a check to avoid potential null
pointer dereference error when the pointer is accessed later.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
index 99af9e88b2d800d390ced7f884bdd9d58d4fdb89..2f0822ee3ff936f5318319b0ff1338e916dbaff5 100644 (file)
--- a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
+++ b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
@@ -121,9 +121,11 @@ static void __init omapdss_add_to_list(struct device_node *node, bool root)
 {
        struct dss_conv_node *n = kmalloc(sizeof(struct dss_conv_node),
                GFP_KERNEL);
-       n->node = node;
-       n->root = root;
-       list_add(&n->list, &dss_conv_list);
+       if (n) {
+               n->node = node;
+               n->root = root;
+               list_add(&n->list, &dss_conv_list);
+       }
 }
 
 static bool __init omapdss_list_contains(const struct device_node *node)