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Input: edt_ft5x06 - change msleep to usleep_range for small msecs 

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, retry logic, etc.  Thus, change msleep to
usleep_range for precise wakeups.

Signed-off-by: Aniroop Mathur <a.mathur@samsung.com>
Acked-by: Simon Budig <simon.budig@kernelconcepts.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Aniroop Mathur 2017-01-04 10:57:51 -08:00 committed by Dmitry Torokhov
parent c01b5e7464
commit 0eeecf6039
1 changed files with 2 additions and 2 deletions
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4
drivers/input/touchscreen/edt-ft5x06.c
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@ -67,7 +67,7 @@
#define EDT_SWITCH_MODE_RETRIES 10
#define EDT_SWITCH_MODE_DELAY 5 /* msec */
#define EDT_RAW_DATA_RETRIES 100
#define EDT_RAW_DATA_DELAY 1 /* msec */
#define EDT_RAW_DATA_DELAY 1000 /* usec */
enum edt_ver {
M06,
@ -664,7 +664,7 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
}
do {
msleep(EDT_RAW_DATA_DELAY);
usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100);
val = edt_ft5x06_register_read(tsdata, 0x08);
if (val < 1)
break;