From: Aniroop Mathur <a.mathur@samsung.com>
Date: Tue, 27 Dec 2016 21:22:42 +0000 (-0800)
Subject: Input: bma150 - switch to using usleep_range instead of msleep
X-Git-Tag: v4.14-rc1~4^2~54^2~81
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f63bb4f442d6c7929e58d671d1f46e122c441884;p=platform%2Fkernel%2Flinux-rpi.git

Input: bma150 - switch to using usleep_range instead of msleep

msleep (1~20) may not do what the caller intends, and will often sleep
longer.  (~20 ms actual sleep for any value given in the 1~20ms range) This
is not the desired behaviour for many cases like device resume time, device
suspend time, device enable time, etc.  Thus, change msleep to usleep_range
for precise wakeups.

Signed-off-by: Aniroop Mathur <a.mathur@samsung.com>
Acked by: Albert Zhang <xu.zhang@bosch-sensortec.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---

diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
index 2124390..1fa8537 100644
--- a/drivers/input/misc/bma150.c
+++ b/drivers/input/misc/bma150.c
@@ -207,7 +207,7 @@ static int bma150_set_mode(struct bma150_data *bma150, u8 mode)
 		return error;
 
 	if (mode == BMA150_MODE_NORMAL)
-		msleep(2);
+		usleep_range(2000, 2100);
 
 	bma150->mode = mode;
 	return 0;
@@ -222,7 +222,7 @@ static int bma150_soft_reset(struct bma150_data *bma150)
 	if (error)
 		return error;
 
-	msleep(2);
+	usleep_range(2000, 2100);
 	return 0;
 }