From 1d3f4b905a786d69103d9e6d8e92683fb2c7a027 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Fri, 8 Jun 2007 16:29:43 -0700
Subject: [PATCH] IB: Fix ib_umem_get() when npages == 0
gcc correctly warned:
drivers/infiniband/core/umem.c: In function 'ib_umem_get':
drivers/infiniband/core/umem.c:78: warning: 'ret' may be used uninitialized in this function
Set ret to 0 in case npages == 0 and the loop isn't entered at all.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
drivers/infiniband/core/umem.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index d40652a8015..26d0470eef6 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -121,6 +121,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
cur_base = addr & PAGE_MASK;
+ ret = 0;
while (npages) {
ret = get_user_pages(current, current->mm, cur_base,
min_t(int, npages,
--
2.25.4