From: Akihiro Tsukada <tskd08@xxxxxxxxx> 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 <tskd08@xxxxxxxxx> --- Changes since v3: - 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 a0280126bfc..6f6dfa65bba 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); -- 2.16.3
