video: fbdev: controlfb: fix warnings about comparing pointer to 0
Fix warnings aboout comparing pointer to 0 reported by coccicheck:
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
Also while at it change return value to -ENOMEM on kzalloc() failure.
Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Reviewed-by: Mathieu Malaterre <malat@debian.org>
[b.zolnierkie: minor fixups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c
index 7af8db2..9a680ef 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 && !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 && !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)
+ return -ENOMEM;
control_fb = p; /* save it for cleanups */
/* Map in frame buffer and registers */