From: Jia-Ju Bai Date: Fri, 27 Jul 2018 03:02:40 +0000 (-0400) Subject: media: i2c: vs6624: Replace mdelay() with msleep() and usleep_range() in vs6624_probe() X-Git-Tag: v4.19-rc1~137^2~145 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a8a4d304b1a41105568c1408e4276cd6f32be787;p=uclinux-h8%2Flinux.git media: i2c: vs6624: Replace mdelay() with msleep() and usleep_range() in vs6624_probe() vs6624_probe() is never called in atomic context. It calls mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep() and usleep_range(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/i2c/vs6624.c b/drivers/media/i2c/vs6624.c index 1658816a9844..bc9825f4a73d 100644 --- a/drivers/media/i2c/vs6624.c +++ b/drivers/media/i2c/vs6624.c @@ -770,7 +770,7 @@ static int vs6624_probe(struct i2c_client *client, return ret; } /* wait 100ms before any further i2c writes are performed */ - mdelay(100); + msleep(100); sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); if (sensor == NULL) @@ -782,7 +782,7 @@ static int vs6624_probe(struct i2c_client *client, vs6624_writeregs(sd, vs6624_p1); vs6624_write(sd, VS6624_MICRO_EN, 0x2); vs6624_write(sd, VS6624_DIO_EN, 0x1); - mdelay(10); + usleep_range(10000, 11000); vs6624_writeregs(sd, vs6624_p2); vs6624_writeregs(sd, vs6624_default);