From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D00172BEFE8; Thu, 7 May 2026 22:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778192428; cv=none; b=RkBvppP/Q82lT7cDaYHWf8lto9mQ2KI/fuuFt+wYcKba/ALdHK8Fy6Eecja/Ybb7ltHFU5lSwXeqoPgZ0N5fgVXaKd2qcceC+vVeZ2i/GGMDauk7XEzo9tnbQh1hpOdWEBftN9C6paeEL33rDaMvj3JFISyJV+ouak8k71wkQOQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778192428; c=relaxed/simple; bh=s1TsvnWxBMLKi1rpi/gQlZCWWYXmUON5jm8poglnmz4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=blLAN3puAaJUqFlkb6+B3Av8cwn9sNbbrI6pTkbdEDuMQRrijoKVlTECeUsi4zAaud3hLT3+AS4skHBp2g0PWAayScr+vJeyv/rIw89dOivAJ9sZ0dAmp+zChYCExEaMdaWEG6G85cq7ARcVfy3wpjpCywRucRaQUhPbSIrdtKs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=desiato.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=refedxBV; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=desiato.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="refedxBV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=MIME-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=s1TsvnWxBMLKi1rpi/gQlZCWWYXmUON5jm8poglnmz4=; b=refedxBVKVVJZv/+Ul0YUVnGbS UgAV43BgQxKWJ8842+1dpbDp2PgGnp4EKBT78kwvtDdERLglUzT+kt5TXdZj8OqXubCP8LxFkRwdG k0XouuqdJh0WPErXn2mtD5LHf7GxsM09Pyhv8BcAcJ/56QigAyeLNHMwxK183nt7zSH9S8Pg3483r pk3nSMu4rHcL2MJhLucjSsHMJwLYtPwoE3WGdgh1TD8PdC38QzK7vNrGwhwW4YsFUkDlArsDv5SRf ozs11yjLOn5PjDYT0jEfPupLy35syYll95rv9EOMeSyUybcjjZCMHwTJDWsPe0aQP65/M3VJvDlBj XNSh0uIw==; Received: from [172.31.31.148] (helo=u09cd745991455d.ant.amazon.com) by desiato.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wL74s-00000004gHf-1SZt; Thu, 07 May 2026 22:20:18 +0000 Message-ID: <32d91fe1379c8e55bbab23182f1670832a8214bb.camel@infradead.org> Subject: Re: [PATCH] char: applicom: remove low-quality, unused driver From: David Woodhouse To: Ethan Nelson-Moore , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: Jonathan Corbet , Shuah Khan , Arnd Bergmann , Greg Kroah-Hartman , "Jiri Slaby (SUSE)" , Max Nikulin , "Martin K. Petersen" Date: Thu, 07 May 2026 23:20:18 +0100 In-Reply-To: <20260503035824.24078-1-enelsonmoore@gmail.com> References: <20260503035824.24078-1-enelsonmoore@gmail.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-Jz/m3uWDC0EW6loSKol+" User-Agent: Evolution 3.52.3-0ubuntu1.1 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html --=-Jz/m3uWDC0EW6loSKol+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 2026-05-02 at 20:58 -0700, Ethan Nelson-Moore wrote: > The applicom driver supports PCI Profibus cards from Applicom, later > acquired by Molex. It has severe coding style issues and has attracted > a number of bug and security fixes over the years, despite the fact > that no one appears to be using it. It was broken from at least the > beginning of Git history (Linux 2.6.12-rc2 in April 2005) until October > 2008, when a fatal bug was fixed in commit bc20589bf1c6 ("applicom.c: > fix apparently-broken code in do_ac_read()"). In the commit message, > the author commented that no one they knew was able to test the change. > Since then, there have been no commits that indicate the driver is > being used. Later PCI and PCI-Express Applicom Profibus cards only > officially support Windows [1], and even the PCI-Express cards have > been discontinued [2]. Given all these factors, remove the driver to > reduce future maintenance workload. >=20 > [1] https://www.sarcitalia.it/file_upload/prodotti//PCIE1500S7_PFB_987651= -3769_0876250001505823933.pdf > [2] https://us.rs-online.com/product/molex-woodhead-brad/112011-5026/7063= 1928/ >=20 > Signed-off-by: Ethan Nelson-Moore Acked-by: David Woodhouse I'm not aware of anyone using these cards in the 21st century. --=-Jz/m3uWDC0EW6loSKol+ Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCD9Aw ggSOMIIDdqADAgECAhAOmiw0ECVD4cWj5DqVrT9PMA0GCSqGSIb3DQEBCwUAMGUxCzAJBgNVBAYT AlVTMRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5jb20xJDAi BgNVBAMTG0RpZ2lDZXJ0IEFzc3VyZWQgSUQgUm9vdCBDQTAeFw0yNDAxMzAwMDAwMDBaFw0zMTEx MDkyMzU5NTlaMEExCzAJBgNVBAYTAkFVMRAwDgYDVQQKEwdWZXJva2V5MSAwHgYDVQQDExdWZXJv 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