workqueue: deprecate flush[_delayed]_work_sync()

flush[_delayed]_work_sync() are now spurious.  Mark them deprecated
and convert all users to flush[_delayed]_work().

If you're cc'd and wondering what's going on: Now all workqueues are
non-reentrant and the regular flushes guarantee that the work item is
not pending or running on any CPU on return, so there's no reason to
use the sync flushes at all and they're going away.

This patch doesn't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Mattia Dongili <malattia@linux.it>
Cc: Kent Yoder <key@linux.vnet.ibm.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Avi Kivity <avi@redhat.com> 

3 files changed, 5 insertions, 5 deletions

diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
index f56b6e7ffdac..f6837b99908c 100644
--- a/drivers/leds/leds-lm3533.c
+++ b/drivers/leds/leds-lm3533.c
@@ -737,7 +737,7 @@ err_sysfs_remove:
 	sysfs_remove_group(&led->cdev.dev->kobj, &lm3533_led_attribute_group);
 err_unregister:
 	led_classdev_unregister(&led->cdev);
-	flush_work_sync(&led->work);
+	flush_work(&led->work);
 
 	return ret;
 }
@@ -751,7 +751,7 @@ static int __devexit lm3533_led_remove(struct platform_device *pdev)
 	lm3533_ctrlbank_disable(&led->cb);
 	sysfs_remove_group(&led->cdev.dev->kobj, &lm3533_led_attribute_group);
 	led_classdev_unregister(&led->cdev);
-	flush_work_sync(&led->work);
+	flush_work(&led->work);
 
 	return 0;
 }
@@ -765,7 +765,7 @@ static void lm3533_led_shutdown(struct platform_device *pdev)
 
 	lm3533_ctrlbank_disable(&led->cb);
 	lm3533_led_set(&led->cdev, LED_OFF);		/* disable blink */
-	flush_work_sync(&led->work);
+	flush_work(&led->work);
 }
 
 static struct platform_driver lm3533_led_driver = {
diff --git a/drivers/leds/leds-lp8788.c b/drivers/leds/leds-lp8788.c
index 53bd136f1ef0..cb76bc46a021 100644
--- a/drivers/leds/leds-lp8788.c
+++ b/drivers/leds/leds-lp8788.c
@@ -172,7 +172,7 @@ static int __devexit lp8788_led_remove(struct platform_device *pdev)
 	struct lp8788_led *led = platform_get_drvdata(pdev);
 
 	led_classdev_unregister(&led->led_dev);
-	flush_work_sync(&led->work);
+	flush_work(&led->work);
 
 	return 0;
 }
diff --git a/drivers/leds/leds-wm8350.c b/drivers/leds/leds-wm8350.c
index 918d4baff1c7..4c62113f7a77 100644
--- a/drivers/leds/leds-wm8350.c
+++ b/drivers/leds/leds-wm8350.c
@@ -275,7 +275,7 @@ static int wm8350_led_remove(struct platform_device *pdev)
 	struct wm8350_led *led = platform_get_drvdata(pdev);
 
 	led_classdev_unregister(&led->cdev);
-	flush_work_sync(&led->work);
+	flush_work(&led->work);
 	wm8350_led_disable(led);
 	regulator_put(led->dcdc);
 	regulator_put(led->isink);