Re: [PATCH] input: touchscreen: wdt87xx_i2c: Replace mdelay() with msleep() in wdt87xx_resume()
On Fri, Jul 27, 2018 at 10:32:16AM +0800, Jia-Ju Bai wrote: > wdt87xx_resume() is never called in atomic context. > It calls mdelay() to busily wait, which is not necessary. > mdelay() can be replaced with msleep(). > > This is found by a static analysis tool named DCNS written by myself. > > Signed-off-by: Jia-Ju Bai Applied, thank you. > --- > drivers/input/touchscreen/wdt87xx_i2c.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c > b/drivers/input/touchscreen/wdt87xx_i2c.c > index 20f7f3902757..166edeb6 100644 > --- a/drivers/input/touchscreen/wdt87xx_i2c.c > +++ b/drivers/input/touchscreen/wdt87xx_i2c.c > @@ -1142,7 +1142,7 @@ static int __maybe_unused wdt87xx_resume(struct device > *dev) >* The chip may have been reset while system is resuming, >* give it some time to settle. >*/ > - mdelay(100); > + msleep(100); > > error = wdt87xx_send_command(client, VND_CMD_START, 0); > if (error) > -- > 2.17.0 > -- Dmitry
[PATCH] input: touchscreen: wdt87xx_i2c: Replace mdelay() with msleep() in wdt87xx_resume()
wdt87xx_resume() is never called in atomic context. It calls mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai --- drivers/input/touchscreen/wdt87xx_i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c b/drivers/input/touchscreen/wdt87xx_i2c.c index 20f7f3902757..166edeb6 100644 --- a/drivers/input/touchscreen/wdt87xx_i2c.c +++ b/drivers/input/touchscreen/wdt87xx_i2c.c @@ -1142,7 +1142,7 @@ static int __maybe_unused wdt87xx_resume(struct device *dev) * The chip may have been reset while system is resuming, * give it some time to settle. */ - mdelay(100); + msleep(100); error = wdt87xx_send_command(client, VND_CMD_START, 0); if (error) -- 2.17.0
