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percpu: remove compile warnings caused by __verify_pcpu_ptr()

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If percpu pointer is const, __verify_pcpu_ptr() triggers warnings like
the following.

 drivers/net/loopback.c: In function 'loopback_get_stats':
 drivers/net/loopback.c:109: warning: initialization discards qualifiers from pointer target type

Fix it by adding const to the verification target pointer used in
__verify_pcpu_ptr().

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
This commit is contained in:
Tejun Heo 2009-11-18 17:53:21 +09:00
parent 545695fb41
commit 85438592f1
1 changed files with 1 additions and 1 deletions
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2
include/linux/percpu-defs.h
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@ -24,7 +24,7 @@
* input parameter is a percpu pointer.
*/
#define __verify_pcpu_ptr(ptr) do { \
void __percpu *__vpp_verify = (typeof(ptr))NULL; \
const void __percpu *__vpp_verify = (typeof(ptr))NULL; \
(void)__vpp_verify; \
} while (0)