[PATCH] Input: Change msleep to usleep_range for small msecs

From: Aniroop Mathur
Date: Thu Nov 24 2016 - 10:54:12 EST


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@xxxxxxxxxxx>
---
drivers/input/misc/bma150.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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;
}

--
2.6.2