From: Cho, Yu-Chen <acho@novell.com>
Date: Tue, 3 May 2011 09:53:35 +0000 (+0800)
Subject: staging/rts_pstor: fix Polling thread wakeups CPU
X-Git-Tag: firefly_0821_release~7613^2~1326^2~531
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=da548cb3f1ec3b1fd4ec2a848401398462ce3124;p=firefly-linux-kernel-4.4.55.git

staging/rts_pstor: fix Polling thread wakeups CPU

RealTek PCI-E Card Reader rts_pstor driver causes CPU wakeup very
frequently, thatt's bad for power consumption.

Signed-off-by: Cho, Yu-Chen <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/rts_pstor/rtsx.c b/drivers/staging/rts_pstor/rtsx.c
index 02525d57ba83..5ff59f27d101 100644
--- a/drivers/staging/rts_pstor/rtsx.c
+++ b/drivers/staging/rts_pstor/rtsx.c
@@ -594,7 +594,9 @@ static int rtsx_polling_thread(void *__dev)
 	wait_timeout((delay_use + 5) * 1000);
 
 	for (;;) {
-		wait_timeout(POLLING_INTERVAL);
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule_timeout(POLLING_INTERVAL);
 
 		/* lock the device pointers */
 		mutex_lock(&(dev->dev_mutex));