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Subject[PATCH 1/2] cpu/hotplug: Clarify description of __cpuhp_setup_state() return value
Date
When ivoked 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>
---

kernel/cpu.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 217fd2e..5339aca 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1586,7 +1586,11 @@ int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
* @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,
--
1.7.1
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