[media] ov9650: use msleep() for uncritical long delay

ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 25ms delays here to use msleep() and
reduce the load on the hrtimer subsystem.

Link: http://lkml.org/lkml/2017/1/11/377
Reviwed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index 502c72238a4a52440a2fa735686f88ffa00a88bf..2de2fbb13b857ec92cc2766fe06730ed4702ad56 100644 (file)
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c
@@ -522,7 +522,7 @@ static void __ov965x_set_power(struct ov965x *ov965x, int on)
        if (on) {
                ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 0);
                ov965x_gpio_set(ov965x->gpios[GPIO_RST], 0);
-               usleep_range(25000, 26000);
+               msleep(25);
        } else {
                ov965x_gpio_set(ov965x->gpios[GPIO_RST], 1);
                ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 1);
@@ -1438,7 +1438,7 @@ static int ov965x_detect_sensor(struct v4l2_subdev *sd)
 
        mutex_lock(&ov965x->lock);
        __ov965x_set_power(ov965x, 1);
-       usleep_range(25000, 26000);
+       msleep(25);
 
        /* Check sensor revision */
        ret = ov965x_read(client, REG_PID, &pid);