[PATCH 2/2] mfd: tps65010: queue I/O work on freezable workqueue

[Jiale Yao]

The TPS65010 event worker performs SMBus transfers and can reschedule
itself to poll the charging state. The power-efficient system workqueue
is not freezable, so pending work can access an I2C adapter after it has
been suspended.

Use the freezable power-efficient workqueue for every scheduling path.
This preserves the power-efficient behavior while freezing I/O across
system suspend.

Signed-off-by: Jiale Yao <yaojiale02@xxxxxxx>
---
 drivers/mfd/tps65010.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/mfd/tps65010.c b/drivers/mfd/tps65010.c
index 8a144ec52201..b038d67ff715 100644
--- a/drivers/mfd/tps65010.c
+++ b/drivers/mfd/tps65010.c
@@ -230,7 +230,7 @@ static int dbg_show(struct seq_file *s, void *_)
 	seq_printf(s, "mask2     %s\n", buf);
 	/* ignore ackint2 */
 
-	queue_delayed_work(system_power_efficient_wq, &tps->work,
+	queue_delayed_work(system_freezable_power_efficient_wq, &tps->work,
 			   POWER_POLL_DELAY);
 
 	/* VMAIN voltage, enable lowpower, etc */
@@ -388,7 +388,7 @@ static void tps65010_interrupt(struct tps65010 *tps)
 			&& (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
 		poll = 1;
 	if (poll)
-		queue_delayed_work(system_power_efficient_wq, &tps->work,
+		queue_delayed_work(system_freezable_power_efficient_wq, &tps->work,
 				   POWER_POLL_DELAY);
 
 	/* also potentially gpio-in rise or fall */
@@ -436,7 +436,7 @@ static irqreturn_t tps65010_irq(int irq, void *_tps)
 
 	disable_irq_nosync(irq);
 	set_bit(FLAG_IRQ_ENABLE, &tps->flags);
-	queue_delayed_work(system_power_efficient_wq, &tps->work, 0);
+	queue_delayed_work(system_freezable_power_efficient_wq, &tps->work, 0);
 	return IRQ_HANDLED;
 }
 
@@ -694,7 +694,8 @@ int tps65010_set_vbus_draw(unsigned mA)
 			&& test_and_set_bit(
 				FLAG_VBUS_CHANGED, &the_tps->flags)) {
 		/* gadget drivers call this in_irq() */
-		queue_delayed_work(system_power_efficient_wq, &the_tps->work,
+		queue_delayed_work(system_freezable_power_efficient_wq,
+				   &the_tps->work,
 				   0);
 	}
 	local_irq_restore(flags);
@@ -1052,4 +1053,3 @@ static void __exit tps_exit(void)
 	i2c_del_driver(&tps65010_driver);
 }
 module_exit(tps_exit);
-
-- 
2.34.1