linux-kernel - Re: [PATCH] Input: apple_z2: Fix reading incorrect reports after exiting sleep

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Message-ID: <snwkpf4esyxxhyo2yzq5xepgoh6nkvvqldbiqpj6zm3bbc43zn@gdsxdsza564a>
Date: Thu, 18 Dec 2025 14:19:55 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: fnkl.kernel@...il.com
Cc: Sven Peter <sven@...nel.org>, Janne Grunau <j@...nau.net>, 
	Neal Gompa <neal@...pa.dev>, asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, pitust <piotr@...lmaszek.com>
Subject: Re: [PATCH] Input: apple_z2: Fix reading incorrect reports after
 exiting sleep

On Thu, Dec 18, 2025 at 09:11:26AM +0100, Sasha Finkelstein via B4 Relay wrote:
> From: Sasha Finkelstein <fnkl.kernel@...il.com>
> 
> Under certain conditions (more prevalent after a suspend/resume cycle),
> the touchscreen controller can send the "boot complete" interrupt before
> it actually finished booting. In those cases, attempting to read touch
> data resuls in a stream of "not ready" messages being read and
> interpreted as a touch report. Check that the response is in fact a
> touch report and discard it otherwise.
> 
> Reported-by: pitust <piotr@...lmaszek.com>
> Closes: https://oftc.catirclogs.org/asahi/2025-12-17#34878715;
> Fixes: 471a92f8a21a ("Input: apple_z2 - add a driver for Apple Z2 touchscreens")
> Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>

Applied, thank you.

-- 
Dmitry