devres: fix devres_get()

commit 64526370d11ce8868ca495723d595b61e8697fbf upstream.

Currently, devres_get() passes devres_free() the pointer to devres,
but devres_free() should be given with the pointer to resource data.

Fixes: 9ac7849e35f7 ("devres: device resource management")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
(cherry picked from commit ebc0ae5a7159086a992f7904dc9ad849a13eecfc)
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 05dd307e8f024038bfe6e9d762e3dff1dd6281ee..6d022dc77b799dd85969e99e8ec8c1846f04bfae 100644 (file)
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -253,10 +253,10 @@ void * devres_get(struct device *dev, void *new_res,
        if (!dr) {
                add_dr(dev, &new_dr->node);
                dr = new_dr;
-               new_dr = NULL;
+               new_res = NULL;
        }
        spin_unlock_irqrestore(&dev->devres_lock, flags);
-       devres_free(new_dr);
+       devres_free(new_res);
 
        return dr->data;
 }