Merge branches 'clockevents/4.4-fixes' and 'clockevents/4.5-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent

Pull in fixes from Daniel Lezcano:

 - Fix the vt8500 timer leading to a system lock up when dealing with too
   small delta (Roman Volkov)

 - Select the CLKSRC_MMIO when the fsl_ftm_timer is enabled with COMPILE_TEST
   (Daniel Lezcano)

 - Prevent to compile timers using the 'iomem' API when the architecture has
   not HAS_IOMEM set (Richard Weinberger)

1 files changed, 4 insertions, 1 deletions

diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index 28cb30f80256..8705d79b2c6f 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -120,7 +120,10 @@ int user_update(struct key *key, struct key_preparsed_payload *prep)
 
         if (ret == 0) {
                 /* attach the new data, displacing the old */
-                zap = key->payload.data[0];
+                if (!test_bit(KEY_FLAG_NEGATIVE, &key->flags))
+                        zap = key->payload.data[0];
+                else
+                        zap = NULL;
                 rcu_assign_keypointer(key, upayload);
                 key->expiry = 0;
         }