staging: zsmalloc: fix uninit'ed variable warning
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>
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c
index fb54a9b..4af3dd6 100644
--- a/drivers/staging/zsmalloc/zsmalloc-main.c
+++ b/drivers/staging/zsmalloc/zsmalloc-main.c
@@ -400,7 +400,7 @@
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 @@
*/
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)