From 08169a162f97819d3e5b4a342bb9cf5137787154 Mon Sep 17 00:00:00 2001 From: Chen Yu Date: Fri, 14 Apr 2023 20:10:26 +0800 Subject: PM: hibernate: Turn snapshot_test into global variable There is need to check snapshot_test and open block device in different mode, so as to avoid the race condition. No functional changes intended. Suggested-by: Pavankumar Kondeti Signed-off-by: Chen Yu Signed-off-by: Rafael J. Wysocki --- kernel/power/hibernate.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'kernel/power/hibernate.c') diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 793c55a2becb..aa551b093c3f 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -64,6 +64,7 @@ enum { static int hibernation_mode = HIBERNATION_SHUTDOWN; bool freezer_test_done; +bool snapshot_test; static const struct platform_hibernation_ops *hibernation_ops; @@ -716,7 +717,6 @@ static int load_image_and_restore(void) */ int hibernate(void) { - bool snapshot_test = false; unsigned int sleep_flags; int error; @@ -744,6 +744,9 @@ int hibernate(void) if (error) goto Exit; + /* protected by system_transition_mutex */ + snapshot_test = false; + lock_device_hotplug(); /* Allocate memory management structures */ error = create_basic_memory_bitmaps(); @@ -940,6 +943,8 @@ static int software_resume(void) */ mutex_lock_nested(&system_transition_mutex, SINGLE_DEPTH_NESTING); + snapshot_test = false; + if (swsusp_resume_device) goto Check_image; -- cgit v1.2.3