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 52D1835965; Mon, 27 Oct 2025 19:08:23 +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=1761592103; cv=none; b=SDrEVkktngLukXrd7Li+lrFI2jS2DKp0L68tRoCwgB0KZYkBd0OC5ETRBEsuYjQOfEMTaRWTX0XWTFx3Dr8NxtxqXXX1ThV3x21cjForFLiiJLYF+mFcaGWCjyDSgxcpV/AmS0v0tkcfUEmo4zr/VE3FAD5A5bHfRkvZcb1bU+0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761592103; c=relaxed/simple; bh=sib9+wuHwLC28XXJvMBLnfya/TnHg4Ibc6BvV34JCIE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OU3tdJhUPgEAHG7cXZpddfX98fzVL05P3igLQnSi7QvJbxOVvDTo5PgUlDta9VurdkzAVAGk6R7x+c7oW0tDT7hNCpDMyCm5TuHK8ta66rPSmZe3BSWRGF2J57J+Um12/sQgwnedddVguMcZrEFvpIO9Rh24rB63ud+ABuQ8BxU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NYdei1ih; 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="NYdei1ih" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DADB2C4CEF1; Mon, 27 Oct 2025 19:08:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761592103; bh=sib9+wuHwLC28XXJvMBLnfya/TnHg4Ibc6BvV34JCIE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NYdei1ihqX8/zNnuMY8gu//zrwcJlWhRyfHE45wReSaz4/xH2I1V+CFlYTh070OgT eyjbZOlKA25hLyrqigVr5mFWJZAZBmY7U98Yoq7YGFXZblmjLyRzU7xRubzgfjxKUj moK38Ok2qgkMh7AZ2lfGhre/wUWs9eYLuUN7YDhA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kuen-Han Tsai , Sasha Levin Subject: [PATCH 5.15 118/123] usb: gadget: Introduce free_usb_request helper Date: Mon, 27 Oct 2025 19:36:38 +0100 Message-ID: <20251027183449.543634917@linuxfoundation.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251027183446.381986645@linuxfoundation.org> References: <20251027183446.381986645@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev 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: Kuen-Han Tsai [ Upstream commit 201c53c687f2b55a7cc6d9f4000af4797860174b ] Introduce the free_usb_request() function that frees both the request's buffer and the request itself. This function serves as the cleanup callback for DEFINE_FREE() to enable automatic, scope-based cleanup for usb_request pointers. Signed-off-by: Kuen-Han Tsai Link: https://lore.kernel.org/r/20250916-ready-v1-2-4997bf277548@google.com Signed-off-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20250916-ready-v1-2-4997bf277548@google.com Stable-dep-of: 75a5b8d4ddd4 ("usb: gadget: f_ncm: Refactor bind path to use __free()") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/gadget.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -17,6 +17,7 @@ #ifndef __LINUX_USB_GADGET_H #define __LINUX_USB_GADGET_H +#include #include #include #include @@ -292,6 +293,28 @@ static inline void usb_ep_fifo_flush(str /*-------------------------------------------------------------------------*/ +/** + * free_usb_request - frees a usb_request object and its buffer + * @req: the request being freed + * + * This helper function frees both the request's buffer and the request object + * itself by calling usb_ep_free_request(). Its signature is designed to be used + * with DEFINE_FREE() to enable automatic, scope-based cleanup for usb_request + * pointers. + */ +static inline void free_usb_request(struct usb_request *req) +{ + if (!req) + return; + + kfree(req->buf); + usb_ep_free_request(req->ep, req); +} + +DEFINE_FREE(free_usb_request, struct usb_request *, free_usb_request(_T)) + +/*-------------------------------------------------------------------------*/ + struct usb_dcd_config_params { __u8 bU1devExitLat; /* U1 Device exit Latency */ #define USB_DEFAULT_U1_DEV_EXIT_LAT 0x01 /* Less then 1 microsec */