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path: root/drivers/firmware/arm_sdei.c
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Diffstat (limited to 'drivers/firmware/arm_sdei.c')
-rw-r--r--drivers/firmware/arm_sdei.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index eb2df89d4924..e497785cd99f 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -412,14 +412,19 @@ int sdei_event_enable(u32 event_num)
return -ENOENT;
}
- spin_lock(&sdei_list_lock);
- event->reenable = true;
- spin_unlock(&sdei_list_lock);
+ cpus_read_lock();
if (event->type == SDEI_EVENT_TYPE_SHARED)
err = sdei_api_event_enable(event->event_num);
else
err = sdei_do_cross_call(_local_event_enable, event);
+
+ if (!err) {
+ spin_lock(&sdei_list_lock);
+ event->reenable = true;
+ spin_unlock(&sdei_list_lock);
+ }
+ cpus_read_unlock();
mutex_unlock(&sdei_events_lock);
return err;
@@ -621,21 +626,18 @@ int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
break;
}
- spin_lock(&sdei_list_lock);
- event->reregister = true;
- spin_unlock(&sdei_list_lock);
-
+ cpus_read_lock();
err = _sdei_event_register(event);
if (err) {
- spin_lock(&sdei_list_lock);
- event->reregister = false;
- event->reenable = false;
- spin_unlock(&sdei_list_lock);
-
sdei_event_destroy(event);
pr_warn("Failed to register event %u: %d\n", event_num,
err);
+ } else {
+ spin_lock(&sdei_list_lock);
+ event->reregister = true;
+ spin_unlock(&sdei_list_lock);
}
+ cpus_read_unlock();
} while (0);
mutex_unlock(&sdei_events_lock);