From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2E77B15FA7B; Wed, 5 Feb 2025 15:16:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738768561; cv=none; b=BxoTwVU4jiMg33w61sJrDWtqxAP5aMBQZqQl+8ZVjNnn8iqW8kdB1+B9AUXHYYq3p8fCv7mNqAEAFdP5L1Bb5K+2ehy3zcRT78uBKTj2W2VEHQKPn61he/u6VWr74qXt8MLW5jpJeVcoKZ/eEAKvV9BJd90RxvlIxdcI7voLtj0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738768561; c=relaxed/simple; bh=fFkTZHKNjaoCez33iLoUEWpTAYtLex49y3TxXcekhWU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QZPyYkMfRWAF8RG6rGGFEbyAc71HMG1hNufDCCFvERgUQlpKqZc/wt7qGPYbCpWxOooP9laFMJDDlouJ0BIgq38kSa/ymX1lhEYbfMpSOIaGc6bCGeBp2rlN8MsKeMK0iVXPYZYrvfjVDSOll/rcBsheYUr5YRi+R56BrO+fy/U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=n4rinDue; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="n4rinDue" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A82BFC4CED1; Wed, 5 Feb 2025 15:16:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1738768561; bh=fFkTZHKNjaoCez33iLoUEWpTAYtLex49y3TxXcekhWU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n4rinDueRidONitSEPoLG64RLxfu7SGhNFj5ICULKRAM2fzFZH/hne8zeNolPAT8w +XwZpKrFRnOy1I+TAZg2et0cjXnyptXz4q+eoU+5LNa4HJFhZfB/qlhetSX/X1pKQS 4eigFSK/wl278ZAruuk7v7UxegI7cKzS9JHuYMhA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thinh Nguyen Subject: [PATCH 6.13 592/623] usb: gadget: f_tcm: Fix Get/SetInterface return value Date: Wed, 5 Feb 2025 14:45:34 +0100 Message-ID: <20250205134518.873917063@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250205134456.221272033@linuxfoundation.org> References: <20250205134456.221272033@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thinh Nguyen commit 3b997089903b909684114aca6f79d683e5c64a0e upstream. Check to make sure that the GetInterface and SetInterface are for valid interface. Return proper alternate setting number on GetInterface. Fixes: 0b8b1a1fede0 ("usb: gadget: f_tcm: Provide support to get alternate setting in tcm function") Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/ffd91b4640945ea4d3b4f4091cf1abbdbd9cf4fc.1733876548.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/f_tcm.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -2051,9 +2051,14 @@ static void tcm_delayed_set_alt(struct w static int tcm_get_alt(struct usb_function *f, unsigned intf) { - if (intf == bot_intf_desc.bInterfaceNumber) + struct f_uas *fu = to_f_uas(f); + + if (fu->iface != intf) + return -EOPNOTSUPP; + + if (fu->flags & USBG_IS_BOT) return USB_G_ALT_INT_BBB; - if (intf == uasp_intf_desc.bInterfaceNumber) + else if (fu->flags & USBG_IS_UAS) return USB_G_ALT_INT_UAS; return -EOPNOTSUPP; @@ -2063,6 +2068,9 @@ static int tcm_set_alt(struct usb_functi { struct f_uas *fu = to_f_uas(f); + if (fu->iface != intf) + return -EOPNOTSUPP; + if ((alt == USB_G_ALT_INT_BBB) || (alt == USB_G_ALT_INT_UAS)) { struct guas_setup_wq *work;