From: Aniroop Mathur Date: Wed, 4 Jan 2017 18:57:51 +0000 (-0800) Subject: Input: edt_ft5x06 - change msleep to usleep_range for small msecs X-Git-Tag: v4.11-rc1~102^2^2~76 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=0eeecf60394928b48806b081d4bea1a18db9318c;p=linux.git 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 Acked-by: Simon Budig Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 28466e358fee..8fc629fb023f 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -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;