Merge tag 'pm-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "Fix the handling of block devices in the test_resume mode of
  hibernation (Chen Yu)"

* tag 'pm-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: hibernate: Fix the exclusive get block device in test_resume mode
  PM: hibernate: Rename function parameter from snapshot_test to exclusive

Author: torvalds

kernel/power/hibernate.c

@@ -786,9 +786,9 @@ int hibernate(void)
 	unlock_device_hotplug();
 	if (snapshot_test) {
 		pm_pr_dbg("Checking hibernation image\n");
-		error = swsusp_check(snapshot_test);
+		error = swsusp_check(false);
 		if (!error)
-			error = load_image_and_restore(snapshot_test);
+			error = load_image_and_restore(false);
 	}
 	thaw_processes();
 
@@ -945,14 +945,14 @@ static int software_resume(void)
 	pm_pr_dbg("Looking for hibernation image.\n");
 
 	mutex_lock(&system_transition_mutex);
-	error = swsusp_check(false);
+	error = swsusp_check(true);
 	if (error)
 		goto Unlock;
 
 	/* The snapshot device should not be opened while we're running */
 	if (!hibernate_acquire()) {
 		error = -EBUSY;
-		swsusp_close(false);
+		swsusp_close(true);
 		goto Unlock;
 	}
 
@@ -973,7 +973,7 @@ static int software_resume(void)
 		goto Close_Finish;
 	}
 
-	error = load_image_and_restore(false);
+	error = load_image_and_restore(true);
 	thaw_processes();
  Finish:
 	pm_notifier_call_chain(PM_POST_RESTORE);
@@ -987,7 +987,7 @@ static int software_resume(void)
 	pm_pr_dbg("Hibernation image not present or could not be loaded.\n");
 	return error;
  Close_Finish:
-	swsusp_close(false);
+	swsusp_close(true);
 	goto Finish;
 }
 

kernel/power/power.h

@@ -168,11 +168,11 @@ extern int swsusp_swap_in_use(void);
 #define SF_HW_SIG		8
 
 /* kernel/power/hibernate.c */
-int swsusp_check(bool snapshot_test);
+int swsusp_check(bool exclusive);
 extern void swsusp_free(void);
 extern int swsusp_read(unsigned int *flags_p);
 extern int swsusp_write(unsigned int flags);
-void swsusp_close(bool snapshot_test);
+void swsusp_close(bool exclusive);
 #ifdef CONFIG_SUSPEND
 extern int swsusp_unmark(void);
 #endif

kernel/power/swap.c

@@ -1513,12 +1513,13 @@ int swsusp_read(unsigned int *flags_p)
 static void *swsusp_holder;
 
 /**
- *      swsusp_check - Check for swsusp signature in the resume device
+ * swsusp_check - Check for swsusp signature in the resume device
+ * @exclusive: Open the resume device exclusively.
  */
 
-int swsusp_check(bool snapshot_test)
+int swsusp_check(bool exclusive)
 {
-	void *holder = snapshot_test ? &swsusp_holder : NULL;
+	void *holder = exclusive ? &swsusp_holder : NULL;
 	int error;
 
 	hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device, BLK_OPEN_READ,
@@ -1563,17 +1564,18 @@ int swsusp_check(bool snapshot_test)
 }
 
 /**
- *	swsusp_close - close swap device.
+ * swsusp_close - close swap device.
+ * @exclusive: Close the resume device which is exclusively opened.
  */
 
-void swsusp_close(bool snapshot_test)
+void swsusp_close(bool exclusive)
 {
 	if (IS_ERR(hib_resume_bdev)) {
 		pr_debug("Image device not initialised\n");
 		return;
 	}
 
-	blkdev_put(hib_resume_bdev, snapshot_test ? &swsusp_holder : NULL);
+	blkdev_put(hib_resume_bdev, exclusive ? &swsusp_holder : NULL);
 }
 
 /**