linux-kernel - Re: [regression] 1a8953f4f774 ("HID: Add IGNORE quirk for SMARTLINKTECHNOLOGY") causes issue with ID 4c4a:4155 Jieli Technology USB Composite Device

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Message-ID: <aMUxg6FLqDetwiGu@eldamar.lan>
Date: Sat, 13 Sep 2025 10:55:31 +0200
From: Salvatore Bonaccorso <carnil@...ian.org>
To: Staffan Melin <staffan.melin@...illator.se>
Cc: zhangheng <zhangheng@...inos.cn>, Jiri Kosina <jkosina@...e.com>,
	Benjamin Tissoires <bentiss@...nel.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	regressions@...ts.linux.dev, stable@...r.kernel.org,
	1114557@...s.debian.org
Subject: Re: [regression] 1a8953f4f774 ("HID: Add IGNORE quirk for
 SMARTLINKTECHNOLOGY") causes issue with ID 4c4a:4155 Jieli Technology USB
 Composite Device

Hi Staffan,

chiming in hopefully it is of help.

Now really with the patch ...

On Fri, Sep 12, 2025 at 09:57:04PM +0200, Staffan Melin wrote:
> Thank you,
> 
> I tried to apply this patch to 6.12.39, the first problematic kernel, as
> well as 6.12.41, the first bad I tried, and on both I got an error message:
> 
> Applying: HID: quirks: Add device descriptor for 4c4a:4155
> error: patch failed: drivers/hid/hid-quirks.c:1068
> error: drivers/hid/hid-quirks.c: patch does not apply
> Patch failed at 0001 HID: quirks: Add device descriptor for 4c4a:4155
> 
> To which kernel version should I apply the patch?

As the deveopment goes from mainline then down to stable series, the
fix needs to be developed first for mainline. So the patch is targeted
there.

But please find attached an updated patch which hopefully should work
which resolved the context changes on top of 6.12.47.

But ideally you can provide a Tested-by on zhangheng's mainline patch
to get things rolling as needed.

Regards,
Salvatore

View attachment "0001-HID-quirks-Add-device-descriptor-for-4c4a-4155.patch" of type "text/x-diff" (2183 bytes)