From patchwork Thu Nov 17 04:59:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: V4bel X-Patchwork-Id: 13046130 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 7146BC4332F for ; Thu, 17 Nov 2022 05:00:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234495AbiKQFAt (ORCPT ); Thu, 17 Nov 2022 00:00:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234528AbiKQFAq (ORCPT ); Thu, 17 Nov 2022 00:00:46 -0500 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4CCA7391D2; Wed, 16 Nov 2022 21:00:46 -0800 (PST) Received: by mail-pf1-x42e.google.com with SMTP id k15so696753pfg.2; Wed, 16 Nov 2022 21:00:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=G2RtnWBUODwyk00f7bE/k2r1zJUSsT+1BYQxHB4ViqE=; b=ZrcM95rF9iRteNL++4aman1VnuJSb1nT4fxBjaAiP4z2w1N7eACH7+h59qMrfOjxKI 3UXeP9f0UtRkktfiMy0sIijM4kwBCFL3TR6BcSI3pFsx9yILcaO8rwOwEEMHnNiLGdxA Hkl3gIskrKylCm1/MQlpv1C+Uym2s5IYDhAjZuUVBKVYoqQa/moWL37lqcbUBs3y3Oxm WoREGqWpWcNdB9N/yIBqPj5qw/zSrSjFFd/3j8PjZ1buZoIUHTGn+v/DALpD1q0shjab 9iGpgKmeeEb1QQ3j6JNUn07BLtjZdP8879KaiqS3i3qwUH0nEsV0pA4F6DbQLCdQH/On KLKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=G2RtnWBUODwyk00f7bE/k2r1zJUSsT+1BYQxHB4ViqE=; b=vnGLJHDaH9+oNh4phN1OciysudvplO43rCyGKFUppmmNMN8+ImE34Mk0aByRWOwdIT yTy+UZZNO8JrOWcSAxFO4zONrvTt1wSnX9LMRfSyiAkFpJWpvSvnpF2WPUhuXzRNGOZJ 2F8aKwc/D3HnX4dNtw1PJ8xdpgpeDDFTwezkXTWFYVuF2VudZ9jX85EiWAtVzPIoMY7N cruhQKDZFLvQ0VLMcUcOGIxQx+loxGKyO3YxGzaYLAC6uIulAqU+gS0DwQFMdUzyU+NQ ku9p7YJULpXL20Se6bt1Z/S0u7WA8+jQqsv8/ABw+KXY6jo466ieJd41KSdYfn8+KRM9 pl7Q== X-Gm-Message-State: ANoB5pmi08PoarDOhzAgmYwDcdwbwociptAST1tGehHRYsW5dImvg2z0 HeSy+hw1grNCl3OgxrcPY/M= X-Google-Smtp-Source: AA0mqf6lEcmx0f2lp7k5ATjPLqIxg+YwDMIrUijBPYh2QipJXhmFIi7AByjzzK7ffMGfTKrRtOY6SA== X-Received: by 2002:aa7:9518:0:b0:56c:8c13:24fd with SMTP id b24-20020aa79518000000b0056c8c1324fdmr1436863pfp.2.1668661245754; Wed, 16 Nov 2022 21:00:45 -0800 (PST) Received: from localhost.localdomain ([175.124.254.119]) by smtp.gmail.com with ESMTPSA id y18-20020aa79af2000000b0053e468a78a8sm11911178pfp.158.2022.11.16.21.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Nov 2022 21:00:45 -0800 (PST) From: Hyunwoo Kim To: mchehab@kernel.org Cc: kernel@tuxforce.de, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, cai.huoqing@linux.dev, tiwai@suse.de, imv4bel@gmail.com Subject: [PATCH v3 4/4] media: ttusb-dec: Fix memory leak in ttusb_dec_exit_dvb() Date: Wed, 16 Nov 2022 20:59:25 -0800 Message-Id: <20221117045925.14297-5-imv4bel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221117045925.14297-1-imv4bel@gmail.com> References: <20221117045925.14297-1-imv4bel@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Since dvb_frontend_detach() is not called in ttusb_dec_exit_dvb(), which is called when the device is disconnected, dvb_frontend_free() is not finally called. This causes a memory leak just by repeatedly plugging and unplugging the device. Fix this issue by adding dvb_frontend_detach() to ttusb_dec_exit_dvb(). Signed-off-by: Hyunwoo Kim --- drivers/media/usb/ttusb-dec/ttusb_dec.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index 38822cedd93a..c4474d4c44e2 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -1544,8 +1544,7 @@ static void ttusb_dec_exit_dvb(struct ttusb_dec *dec) dvb_dmx_release(&dec->demux); if (dec->fe) { dvb_unregister_frontend(dec->fe); - if (dec->fe->ops.release) - dec->fe->ops.release(dec->fe); + dvb_frontend_detach(dec->fe); } dvb_unregister_adapter(&dec->adapter); }