firmware: arm_sdei: clean up sdei_event_create()

Function sdei_event_find() is always called in sdei_event_create(), but
it is already called in sdei_event_register(). This code is trying to
avoid a double-create of the same event, which can't happen as we still
hold the sdei_events_lock. We can remove this needless sdei_event_find()
call.

Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
[expanded commit message]
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index 4553640..334c8be 100644 (file)
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -267,15 +267,9 @@ static struct sdei_event *sdei_event_create(u32 event_num,
                event->private_registered = regs;
        }
 
-       if (sdei_event_find(event_num)) {
-               kfree(event->registered);
-               kfree(event);
-               event = ERR_PTR(-EBUSY);
-       } else {
-               spin_lock(&sdei_list_lock);
-               list_add(&event->list, &sdei_list);
-               spin_unlock(&sdei_list_lock);
-       }
+       spin_lock(&sdei_list_lock);
+       list_add(&event->list, &sdei_list);
+       spin_unlock(&sdei_list_lock);
 
        return event;
 }