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 2991A22D7A6; Mon, 10 Mar 2025 17:52:23 +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=1741629144; cv=none; b=I9avAZGdmOwy6/mI4igImRm5hPAp2tYEZcsIhj78vGQ3bxh2Q4e4a+Zj3vAwCdoTXurE7ztXhjnQA1T4QRDEFkWuPK0F+QiCi97c3PGvMq2V2QMM0JAz/DsBiGEpOT9vydBMFyENVTfEf1pgzROlamZHC5ni/J+zahmV4dSAHMY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629144; c=relaxed/simple; bh=iIjWB/LNOHV9IUADQ6gZI9tFfAdg++EMBHqD+8NZ0do=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Z2N6gYTVFE6mTm1SWSMVIN6kQkpmgcI/Qx+sRHmXjQYb9VrJIzTbn4Can28LlnJ+e3iAJxM6t0mOS6aAEKcULUXQpft9yYfymQupZcDIWlx5vhESLFAyS15+9/nKc9bJlxf0d8dCueip5Fy09JJ07faDVlzK1TT/6xeZ8t1ydg0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wCOeg9FQ; 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="wCOeg9FQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 443C3C4CEE5; Mon, 10 Mar 2025 17:52:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741629143; bh=iIjWB/LNOHV9IUADQ6gZI9tFfAdg++EMBHqD+8NZ0do=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wCOeg9FQBDcaI5WvNzarRIdXn2U4Y2dfdxlC0rJsVy8Wo2u26h6D+AB3gczBqI3b5 eOYaRZvuqjUmjDbaR8SSOb8RPbLFLmkMyb7YNgLLGDKoto+TdiURkowCfJGTvfACpM EwxlfPQP5aQHDFqhPdxhBkaaTy2V/hg9vXu9scHA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thinh Nguyen Subject: [PATCH 5.15 193/620] usb: gadget: f_tcm: Fix Get/SetInterface return value Date: Mon, 10 Mar 2025 18:00:39 +0100 Message-ID: <20250310170553.251672234@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@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 5.15-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 @@ -2098,9 +2098,14 @@ 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; @@ -2110,6 +2115,9 @@ 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;