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bus: arm-ccn: Prevent hotplug callback leak

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In case the driver registration fails, the hotplug callback is leaked.

Not fatal, because it's never invoked as there are no instances registered,
but wrong nevertheless.

Fixes: fdc15a36d8 ("bus/arm-ccn: Convert to hotplug statemachine")
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Suzuki K Poulose <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Will Deacon <[email protected]>
This commit is contained in:
Thomas Gleixner 2016-12-22 11:14:06 +01:00
commit 26242b3300
1 changed files with 4 additions and 1 deletions
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5
drivers/bus/arm-ccn.c
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@ -1570,7 +1570,10 @@ static int __init arm_ccn_init(void)
for (i = 0; i < ARRAY_SIZE(arm_ccn_pmu_events); i++)
arm_ccn_pmu_events_attrs[i] = &arm_ccn_pmu_events[i].attr.attr;
return platform_driver_register(&arm_ccn_driver);
ret = platform_driver_register(&arm_ccn_driver);
if (ret)
cpuhp_remove_multi_state(CPUHP_AP_PERF_ARM_CCN_ONLINE);
return ret;
}
static void __exit arm_ccn_exit(void)