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 02525d5..5ff59f2 100644 (file)
--- 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));