[PATCH] devres: restore zeroing behavior of devres_alloc()

[Kevin Hilman]

commit 64c862a8 (devres: add kernel standard devm_k.alloc functions) changed
the default behavior of alloc_dr() to no longer zero the allocated
memory.  However,
only the devm.k.alloc() function were modified to pass in __GFP_ZERO
which leaves
any users of devres_alloc() or __devres_alloc() with potentially wrong
assumptions
about memory being zero'd upon allocation.

To fix, add __GFP_ZERO to devres_alloc() calls to preserve previous
behavior of zero'ing memory upon allocation.

Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxx>
---
 drivers/base/devres.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 37e67a2..e3fe8be 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -136,7 +136,7 @@ void * devres_alloc(dr_release_t release, size_t
size, gfp_t gfp)
 {
  struct devres *dr;

- dr = alloc_dr(release, size, gfp);
+ dr = alloc_dr(release, size, gfp | __GFP_ZERO);
  if (unlikely(!dr))
  return NULL;
  return dr->data;
-- 
1.8.3
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