Em Mon, 9 Apr 2018 02:21:37 +0900
tsk...@gmail.com escreveu:
> From: Akihiro Tsukada
>
> 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
> ---
> 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 */
Actually, this change is puntual and applies even without patch 3/5.
So, I'll apply this one too.
So, next time, just patches 3 and 5 will be needed.
>
> return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
> value, index, rbuf, rlen, 2000);
Thanks,
Mauro