From: Akihiro Tsukada <tsk...@gmail.com>
As the kernel doc "timers-howto.txt" reads,
short delay with msleep() can take much longer.
In a case of raspbery-pi platform where CONFIG_HZ_100 was set,
it actually affected the init of Friio devices
since it issues lots of i2c transactions with short delay.
Signed-off-by: Akihiro Tsukada <tsk...@gmail.com>
---
Changes since v4:
- none
drivers/media/usb/dvb-usb-v2/gl861.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/usb/dvb-usb-v2/gl861.c
b/drivers/media/usb/dvb-usb-v2/gl861.c
index ecff0062bfb..cdd7bfcb883 100644
--- a/drivers/media/usb/dvb-usb-v2/gl861.c
+++ b/drivers/media/usb/dvb-usb-v2/gl861.c
@@ -45,7 +45,7 @@ static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
return -EINVAL;
}
- msleep(1); /* avoid I2C errors */
+ usleep_range(1000, 2000); /* avoid I2C errors */
return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
value, index, rbuf, rlen, 2000);
--
2.17.0
