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 6CFF3A92E for ; Sat, 18 Oct 2025 00:29:31 +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=1760747371; cv=none; b=hTR0aFI0HPwrzAtTWNUT6sDiK09ylcpc5yneft8kUrEnmmFjw4NztZSto4o2pwvZ9+9zQRXQEYUZQ4up4mtTVCGXjbzgrhYChIqjK5JFVyMkmCMapTHBTLJLjQ+hF4Wc7pESOM4oul5pAN+NZ8asutIYg5fCet+LTY3Tj0pYcyY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760747371; c=relaxed/simple; bh=DZwSzVOT9XEuiEVD6HduziIJq6KaQh1tkVR79/suXkI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U+aKGP/Lbjr+kF5Hfj7HpB5Rd4NLmkxeNrePi52iowESz70kFuJgkXWWHMOLO48+3JdriMwBBr35HRBo69i/1tMRUUFCPAkanarKIOa2JgAgCyU1ZdkZDJFfG23ddL6FGViOgpkTNzl3fVhL6Gmh8hVTuDFU6vBy90U3qC2jLS0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L096mS71; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L096mS71" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B5E7C4CEF9; Sat, 18 Oct 2025 00:29:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760747371; bh=DZwSzVOT9XEuiEVD6HduziIJq6KaQh1tkVR79/suXkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L096mS71tp/5OXhkryYU92NYKaJje2O0OIel1kySnJ/VR0GdIjzDZhXzP3iVoVTqR iGexQSCku0aNTWZeQm9E6kigT94NRNgQ1bYzPYcF9WOm0Llg1KsGjEbZ3GqnbT7b0g 8nvf8/T2vjEhD/NS3U7EV+hjKBiXao8y9cPuOSY2P/CfN5DklQXvVyZiZCTir9+dME 0bVUuCAsMo4uCRKu7iyB05IcArHWIO9mXeWEf5bUQb9UV3DyIEPptCmuWvGP4jgWoK 9YTp1pgUtqQMmVqvlPBN6CVa23ZRyIhdHLMyb7spVQGzIADyX0nyCZ3LDPonU58vZt w9zp3u7vA6nzw== From: Sasha Levin To: stable@vger.kernel.org Cc: Kuen-Han Tsai , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH 6.12.y 2/3] usb: gadget: Introduce free_usb_request helper Date: Fri, 17 Oct 2025 20:29:26 -0400 Message-ID: <20251018002927.85194-2-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251018002927.85194-1-sashal@kernel.org> References: <2025101617-overbook-seventeen-a027@gregkh> <20251018002927.85194-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: 47b2116e54b4 ("usb: gadget: f_acm: Refactor bind path to use __free()") Signed-off-by: Sasha Levin --- include/linux/usb/gadget.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 77554f4446651..da4309f3cea3f 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -15,6 +15,7 @@ #ifndef __LINUX_USB_GADGET_H #define __LINUX_USB_GADGET_H +#include #include #include #include @@ -293,6 +294,28 @@ static inline void usb_ep_fifo_flush(struct usb_ep *ep) /*-------------------------------------------------------------------------*/ +/** + * 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 */ -- 2.51.0