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powerpc/scom: Return NULL instead of 0

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Function scom_map_device() returns data type 'scom_map_t', which is a
typedef for 'void *'. This functions is currently returning NULL and zero,
which causes the following warning by 'sparse':

	arch/powerpc/sysdev/scom.c:63:24: warning: Using plain integer as NULL pointer
	arch/powerpc/sysdev/scom.c:86:24: warning: Using plain integer as NULL pointer

This patch simply replaces zero by NULL.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Breno Leitao 2018-10-22 11:54:18 -03:00 committed by Michael Ellerman
parent 3b30c6e8b9
commit 3347c9f691
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/sysdev/scom.c
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@ -60,7 +60,7 @@ scom_map_t scom_map_device(struct device_node *dev, int index)
parent = scom_find_parent(dev);
if (parent == NULL)
return 0;
return NULL;
/*
* We support "scom-reg" properties for adding scom registers
@ -83,7 +83,7 @@ scom_map_t scom_map_device(struct device_node *dev, int index)
size >>= 2;
if (index >= (size / (2*cells)))
return 0;
return NULL;
reg = of_read_number(&prop[index * cells * 2], cells);
cnt = of_read_number(&prop[index * cells * 2 + cells], cells);