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> 

4 files changed, 4 insertions, 4 deletions

diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
index 74c6b23..b19bfe4 100644
--- a/drivers/power/collie_battery.c
+++ b/drivers/power/collie_battery.c
@@ -290,7 +290,7 @@ static struct gpio collie_batt_gpios[] = {
 static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state)
 {
 	/* flush all pending status updates */
-	flush_work_sync(&bat_work);
+	flush_work(&bat_work);
 	return 0;
 }
 
diff --git a/drivers/power/tosa_battery.c b/drivers/power/tosa_battery.c
index 28bbe7e..51199b5 100644
--- a/drivers/power/tosa_battery.c
+++ b/drivers/power/tosa_battery.c
@@ -327,7 +327,7 @@ static struct gpio tosa_bat_gpios[] = {
 static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
 {
 	/* flush all pending status updates */
-	flush_work_sync(&bat_work);
+	flush_work(&bat_work);
 	return 0;
 }
 
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index d2d4c08..1245fe1 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -146,7 +146,7 @@ static irqreturn_t wm97xx_chrg_irq(int irq, void *data)
 #ifdef CONFIG_PM
 static int wm97xx_bat_suspend(struct device *dev)
 {
-	flush_work_sync(&bat_work);
+	flush_work(&bat_work);
 	return 0;
 }
 
diff --git a/drivers/power/z2_battery.c b/drivers/power/z2_battery.c
index 8c9a607..5757d0d 100644
--- a/drivers/power/z2_battery.c
+++ b/drivers/power/z2_battery.c
@@ -276,7 +276,7 @@ static int z2_batt_suspend(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct z2_charger *charger = i2c_get_clientdata(client);
 
-	flush_work_sync(&charger->bat_work);
+	flush_work(&charger->bat_work);
 	return 0;
 }