[PATCH 14/14] drivers/firmware/sdei: Add sdei_event_get_info()

[Gavin Shan]

This adds API sdei_event_get_info(), to be used when virtualized
SDEI is supported to retrieve the information about the specified
event.

Signed-off-by: Gavin Shan <gshan at redhat.com>
---
 drivers/firmware/arm_sdei.c | 13 +++++++++++++
 include/linux/arm_sdei.h    |  1 +
 2 files changed, 14 insertions(+)

diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index c6bd43914ea0..d5aadf99d0c1 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -173,6 +173,19 @@ static int sdei_api_event_get_info(u32 event, u32 info, u64 *result)
 			      0, 0, result);
 }
 
+int sdei_event_get_info(u32 event, u32 info, u64 *result)
+{
+	int err;
+
+	mutex_lock(&sdei_events_lock);
+
+	err = sdei_api_event_get_info(event, info, result);
+
+	mutex_unlock(&sdei_events_lock);
+
+	return err;
+}
+
 static struct sdei_event *sdei_event_create(u32 event_num,
 					    sdei_event_callback *cb,
 					    void *cb_arg)
diff --git a/include/linux/arm_sdei.h b/include/linux/arm_sdei.h
index 36003751e26e..11dd66273209 100644
--- a/include/linux/arm_sdei.h
+++ b/include/linux/arm_sdei.h
@@ -64,6 +64,7 @@ struct sdei_event {
 };
 
 /* APIs */
+int sdei_event_get_info(u32 event, u32 info, u64 *result);
 struct sdei_event *sdei_event_register(u32 event_num,
 				       sdei_event_callback *cb, void *arg);
 int sdei_event_unregister(struct sdei_event *event);
-- 
2.23.0