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-rw-r--r--kernel/power/user.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 63368163e98d..72e8f4fd616d 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -201,6 +201,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
 	if (!mutex_trylock(&pm_mutex))
 		return -EBUSY;
 
+	lock_device_hotplug();
 	data = filp->private_data;
 
 	switch (cmd) {
@@ -373,6 +374,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
 
 	}
 
+	unlock_device_hotplug();
 	mutex_unlock(&pm_mutex);
 
 	return error;