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staging: zsmalloc: fix uninit'ed variable warning

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This patch fixes an uninitialized variable warning in
alloc_zspage().  It also fixes the secondary issue of
prev_page leaving scope on each loop iteration.  The only
reason this ever worked was because prev_page was occupying
the same space on the stack on each iteration.

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Seth Jennings 2012-06-13 16:03:42 -05:00 committed by Greg Kroah-Hartman
parent 03ae8189ee
commit b4b700c5a6
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/zsmalloc/zsmalloc-main.c
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@ -400,7 +400,7 @@ static void init_zspage(struct page *first_page, struct size_class *class)
static struct page *alloc_zspage(struct size_class *class, gfp_t flags)
{
int i, error;
struct page *first_page = NULL;
struct page *first_page = NULL, *uninitialized_var(prev_page);
/*
* Allocate individual pages and link them together as:
@ -415,7 +415,7 @@ static struct page *alloc_zspage(struct size_class *class, gfp_t flags)
*/
error = -ENOMEM;
for (i = 0; i < class->pages_per_zspage; i++) {
struct page *page, *prev_page;
struct page *page;
page = alloc_page(flags);
if (!page)