[PATCH v2] video: fbdev: Fix Warning comparing pointer to 0 reported by coccicheck

[shobhitkukreti at gmail.com]

From: Shobhit Kukreti <shobhitkukreti at gmail.com>

Fixed Warning Comparing Pointer to 0. Changed return value to -ENOMEM to
report kzalloc failure

drivers/video/fbdev/controlfb.c: WARNING comparing pointer to 0
drivers/video/fbdev/controlfb.c: WARNING comparing pointer to 0
drivers/video/fbdev/controlfb.c: WARNING comparing pointer to 0

Signed-off-by: Shobhit Kukreti <shobhitkukreti at gmail.com>
---
Changes in v2:
 - Modified commit message to report change in return type

 drivers/video/fbdev/controlfb.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c
index 7af8db2..07907c5 100644
--- a/drivers/video/fbdev/controlfb.c
+++ b/drivers/video/fbdev/controlfb.c
@@ -182,7 +182,7 @@ int init_module(void)
 	int ret = -ENXIO;
 
 	dp = of_find_node_by_name(NULL, "control");
-	if (dp != 0 && !control_of_init(dp))
+	if (dp != NULL && !control_of_init(dp))
 		ret = 0;
 	of_node_put(dp);
 
@@ -580,7 +580,7 @@ static int __init control_init(void)
 	control_setup(option);
 
 	dp = of_find_node_by_name(NULL, "control");
-	if (dp != 0 && !control_of_init(dp))
+	if (dp != NULL && !control_of_init(dp))
 		ret = 0;
 	of_node_put(dp);
 
@@ -683,8 +683,8 @@ static int __init control_of_init(struct device_node *dp)
 		return -ENXIO;
 	}
 	p = kzalloc(sizeof(*p), GFP_KERNEL);
-	if (p == 0)
-		return -ENXIO;
+	if (p == NULL)
+		return -ENOMEM;
 	control_fb = p;	/* save it for cleanups */
 
 	/* Map in frame buffer and registers */
-- 
2.7.4