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percpu: kill compile warning in pcpu_populate_chunk() 

Impact: remove compile warning

Mark local variable map_end in pcpu_populate_chunk() with
uninitialized_var().  The variable is always used in tandem with
map_start and guaranteed to be initialized before use but gcc doesn't
understand that.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tejun Heo 2009-03-01 15:42:36 +09:00
parent 0093b108a6
commit 02d51fdfb2
1 changed files with 1 additions and 1 deletions
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2
mm/percpu.c
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@ -639,7 +639,7 @@ static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size)
int page_start = PFN_DOWN(off);
int page_end = PFN_UP(off + size);
int map_start = -1;
int map_end;
int uninitialized_var(map_end);
unsigned int cpu;
int i;