4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe Jaillet <christophe.jail...@wanadoo.fr>

commit af48d7bc3756a0cd882d65bff14ab39746ba57fe upstream.

We know that 'ret = 0' because it has been tested a few lines above.
So, if 'kzalloc' fails, 0 will be returned instead of an error code.
Return -ENOMEM instead.

Fixes: a0d46a3dfdc3 ("ARM: cpuidle: Register per cpuidle device")
Signed-off-by: Christophe Jaillet <christophe.jail...@wanadoo.fr>
Acked-by: Lorenzo Pieralisi <lorenzo.pieral...@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/cpuidle/cpuidle-arm.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -121,6 +121,7 @@ static int __init arm_idle_init(void)
                dev = kzalloc(sizeof(*dev), GFP_KERNEL);
                if (!dev) {
                        pr_err("Failed to allocate cpuidle device\n");
+                       ret = -ENOMEM;
                        goto out_fail;
                }
                dev->cpu = cpu;


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