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PM: hibernate: use correct mode for swsusp_close()

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[ Upstream commit cefcf24b4d351daf70ecd945324e200d3736821e ]

Commit 39fbef4b0f77 ("PM: hibernate: Get block device exclusively in
swsusp_check()") changed the opening mode of the block device to
(FMODE_READ | FMODE_EXCL).

In the corresponding calls to swsusp_close(), the mode is still just
FMODE_READ which triggers the warning in blkdev_flush_mapping() on
resume from hibernate.

So, use the mode (FMODE_READ | FMODE_EXCL) also when closing the
device.

Fixes: 39fbef4b0f77 ("PM: hibernate: Get block device exclusively in swsusp_check()")
Signed-off-by: Thomas Zeitlhofer <thomas.zeitlhofer+lkml@ze-it.at>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Zeitlhofer 2021-11-23 20:18:43 +01:00 • committed by Greg Kroah-Hartman
commit 562fe6a6d2
1 changed files with 3 additions and 3 deletions
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6
kernel/power/hibernate.c
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@ -676,7 +676,7 @@ static int load_image_and_restore(void)
goto Unlock;
error = swsusp_read(&flags);
swsusp_close(FMODE_READ);
swsusp_close(FMODE_READ | FMODE_EXCL);
if (!error)
hibernation_restore(flags & SF_PLATFORM_MODE);
@ -871,7 +871,7 @@ static int software_resume(void)
/* The snapshot device should not be opened while we're running */
if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
error = -EBUSY;
swsusp_close(FMODE_READ);
swsusp_close(FMODE_READ | FMODE_EXCL);
goto Unlock;
}
@ -907,7 +907,7 @@ static int software_resume(void)
pm_pr_dbg("Hibernation image not present or could not be loaded.\n");
return error;
Close_Finish:
swsusp_close(FMODE_READ);
swsusp_close(FMODE_READ | FMODE_EXCL);
goto Finish;
}