linux-kernel - Re: [PATCH] staging: fbtft: fb_ra8875: replace udelay with usleep

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Message-ID: <2025102120-ride-repaint-7a22@gregkh>
Date: Tue, 21 Oct 2025 09:37:50 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Olle Lukowski <olle@...owski.dev>
Cc: Andy Shevchenko <andy@...nel.org>, dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org, linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: fbtft: fb_ra8875: replace udelay with
 usleep_range

On Mon, Oct 20, 2025 at 10:15:36PM +0300, Olle Lukowski wrote:
> Replace udelay(100) calls with usleep_range(100, 200) to allow the
> scheduler to yield instead of busy-waiting. This is the preferred API for
> sleep durations above 10 microseconds.

As per this type of change, have you tested it on real hardware?
Without that, we can't accept this change, and such checkpatch.pl
comments should be ignored.

thanks,

greg k-h