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authorBoris Ostrovsky <boris.ostrovsky@oracle.com>2016-12-15 10:00:57 -0500
committerThomas Gleixner <tglx@linutronix.de>2016-12-15 17:48:20 +0100
commit512f09801b356c54baef62543e51169f03b2e642 (patch)
tree4c3c9cb01ccdbaf8825145ca90bd4b5856fabe14 /kernel
parent9bf11ecce5a2758e5a097c2f3a13d08552d0d6f9 (diff)
cpu/hotplug: Clarify description of __cpuhp_setup_state() return value
When invoked with CPUHP_AP_ONLINE_DYN state __cpuhp_setup_state() is expected to return positive value which is the hotplug state that the routine assigns. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: linux-pm@vger.kernel.org Cc: viresh.kumar@linaro.org Cc: bigeasy@linutronix.de Cc: rjw@rjwysocki.net Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1481814058-4799-2-git-send-email-boris.ostrovsky@oracle.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cpu.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 217fd2e7f435..5339aca811d2 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1586,7 +1586,11 @@ EXPORT_SYMBOL_GPL(__cpuhp_state_add_instance);
* @startup: startup callback function
* @teardown: teardown callback function
*
- * Returns 0 if successful, otherwise a proper error code
+ * Returns:
+ * On success:
+ * Positive state number if @state is CPUHP_AP_ONLINE_DYN
+ * 0 for all other states
+ * On failure: proper (negative) error code
*/
int __cpuhp_setup_state(enum cpuhp_state state,
const char *name, bool invoke,