From nobody Sun Feb 8 08:21:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26B98C04A6A for ; Thu, 27 Jul 2023 16:23:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233793AbjG0QXW (ORCPT ); Thu, 27 Jul 2023 12:23:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231838AbjG0QXU (ORCPT ); Thu, 27 Jul 2023 12:23:20 -0400 Received: from mail-wr1-x430.google.com (mail-wr1-x430.google.com [IPv6:2a00:1450:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A597198A for ; Thu, 27 Jul 2023 09:23:19 -0700 (PDT) Received: by mail-wr1-x430.google.com with SMTP id ffacd0b85a97d-317744867a6so1185452f8f.1 for ; Thu, 27 Jul 2023 09:23:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=devtank-co-uk.20221208.gappssmtp.com; s=20221208; t=1690474997; x=1691079797; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=icyg0XscLKxI4QWuQt/SdZeKJtNG1h8hw2HHWKc7NR4=; b=F8eEU8TBgKD8Nht48axdQI0b0VmKbMKvLLtB3Q86QwwDeoIeAy5DPjO/LTRYWTS7R5 TwQneady8od5YDlwDvKOUpayRaaS911NEbhJpalQqK8T6E2Jd1WkVk5epd76U9HmvZxl X0Jzqx9nYeDcB4vEdv4sbHpZMIjYomDSwcnQQTSb7CgBH6ejTOZz0MVSqJmtXTECBaV0 tLCQPztSlUdfjuL39jsmrapAhIFXSVcOLfPohJ8QPWBHUWEmo9FUkjq0OT7lj1e//ezs Kuk+sGEchy8QR4JErJZEvlN6pXNjrWYtkL6TuaSahioBbI7+FfiKFbDhGcv9RvA4oNmK cTdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690474997; x=1691079797; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=icyg0XscLKxI4QWuQt/SdZeKJtNG1h8hw2HHWKc7NR4=; b=WIcitOZsV6etLxBWcJBhC/QFafbOCAKyAzf4Jzi3OdVxnGg2TYn1t/eVRwIVGC0/Qb 27xo0n/89s9IoG4CK2fQjOScf0KN+OqU7eAWecHwEhMIsDypgB72KuFjuyBFb6GDoPN+ YzxcH0oc/Tcq8r9kBEj08vseECRgkeE5YC87o8FvS6j744+f52DiCq97kFZnkWGR1LD9 73sV3VEzcZxn79ij8WxY0Dn5BjolG4TyBj/f1FW7zuPSSFrPE9w8YOw0HjwFD83ToHf9 4vp/DfK3kO6IznpszgAvTy97SpPoPASFesy3/zLGcSH6jootpAt8a0M+5zq7y1jxuHun MjuQ== X-Gm-Message-State: ABy/qLaZMGlY8RjSKGzOkNcYO3wG6b3eebEU3pYQUKI3Cru39y36VfNl KBQvuGFexTkfr4mo9h+XXeyXQA== X-Google-Smtp-Source: APBJJlFqohS2m5V3lRrkMKFRIOkHjfeXJ3OPqdIcs3pm8+Mly+oqVlqkpRppepO3noovKCPLlAkfkw== X-Received: by 2002:adf:db46:0:b0:30e:5bd0:21a2 with SMTP id f6-20020adfdb46000000b0030e5bd021a2mr2030931wrj.52.1690474997374; Thu, 27 Jul 2023 09:23:17 -0700 (PDT) Received: from DevTop.lan ([212.82.82.3]) by smtp.gmail.com with ESMTPSA id z13-20020a5d654d000000b00314398e4dd4sm2457471wrv.54.2023.07.27.09.23.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 09:23:17 -0700 (PDT) From: Harry Geyer To: Till Harbaum , Andi Shyti , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Cc: harry.geyer@devtank.co.uk Subject: [PATCH] i2c: tiny-usb: check usb base class before assuming the interface on device is for this driver Date: Thu, 27 Jul 2023 17:22:55 +0100 Message-Id: <20230727162255.21551-1-harry.geyer@devtank.co.uk> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Patch allows usb devices with multiple interfaces to use this driver without this driver assuming all interfaces are i2c-tiny-usb. Signed-off-by: Harry Geyer Reviewed-by: Andi Shyti =20 --- drivers/i2c/busses/i2c-tiny-usb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tin= y-usb.c index d1fa9ff5aeab..1bffe36c40ad 100644 --- a/drivers/i2c/busses/i2c-tiny-usb.c +++ b/drivers/i2c/busses/i2c-tiny-usb.c @@ -222,6 +222,10 @@ static int i2c_tiny_usb_probe(struct usb_interface *in= terface, int retval =3D -ENOMEM; u16 version; =20 + if (interface->intf_assoc && + interface->intf_assoc->bFunctionClass !=3D USB_CLASS_VENDOR_SPEC) + return -ENODEV; + dev_dbg(&interface->dev, "probing usb device\n"); =20 /* allocate memory for our device state and initialize it */ --=20 2.34.1