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video: fbdev: controlfb: fix warnings about comparing pointer to 0

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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>
This commit is contained in:
Shobhit Kukreti 2019-06-21 15:13:14 +02:00 committed by Bartlomiej Zolnierkiewicz
parent b6b1d51192
commit acf7287e77
1 changed files with 4 additions and 4 deletions
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8
drivers/video/fbdev/controlfb.c
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@ -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 */