Re: [PATCH] staging: wfx: Replace udelay() by usleep_range() in bh.c

[Greg KH <gregkh@linuxfoundation.org>]

On Mon, Apr 05, 2021 at 11:52:13AM +0200, Fabio M. De Francesco wrote:
> Replace udelay() by usleep_range() in bh.c according to checkpatch
> message: "CHECK: usleep_range is preferred over udelay"
> 
> Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
> ---
>  drivers/staging/wfx/bh.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/wfx/bh.c b/drivers/staging/wfx/bh.c
> index ed53d0b45592..07ef6732973d 100644
> --- a/drivers/staging/wfx/bh.c
> +++ b/drivers/staging/wfx/bh.c
> @@ -315,7 +315,7 @@ void wfx_bh_poll_irq(struct wfx_dev *wdev)
>  			dev_err(wdev->dev, "time out while polling control register\n");
>  			return;
>  		}
> -		udelay(200);
> +		usleep_range(200, 300);

Do you know that this range is safe to use?  This type of change needs
to be tested on a device itself.

thanks,

greg k-h