From patchwork Mon Dec 28 12:50:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 353024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1ACCC433E6 for ; Mon, 28 Dec 2020 16:31:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8AC7C221F0 for ; Mon, 28 Dec 2020 16:31:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729621AbgL1NG2 (ORCPT ); Mon, 28 Dec 2020 08:06:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:33888 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730997AbgL1NGV (ORCPT ); Mon, 28 Dec 2020 08:06:21 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5B23E22582; Mon, 28 Dec 2020 13:06:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609160766; bh=aRFtjc0P4kSaBuZtpRKNgR4103VojKbxB7pdrr3GHNA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xzKNLR1VuzKx02mt2qpj0Z/anTgTv7dQzwb6XGakk11RSW/XknBz/Swd8K6g4TuDo 8Bqq8MKoLLtH3lMNylz6wePoYDQk4m9pmJSVEoxG1hQHO5rhAknJCiXXfiTZFW3aTJ sWf/iwyR5K3DpmVa2MtFReDRDSQLuLPXtfsftTM4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lukas Wunner , Purna Chandra Mandal , Mark Brown Subject: [PATCH 4.9 164/175] spi: pic32: Dont leak DMA channels in probe error path Date: Mon, 28 Dec 2020 13:50:17 +0100 Message-Id: <20201228124901.185726786@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124853.216621466@linuxfoundation.org> References: <20201228124853.216621466@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lukas Wunner commit c575e9113bff5e024d75481613faed5ef9d465b2 upstream. If the calls to devm_request_irq() or devm_spi_register_master() fail on probe of the PIC32 SPI driver, the DMA channels requested by pic32_spi_dma_prep() are erroneously not released. Plug the leak. Fixes: 1bcb9f8ceb67 ("spi: spi-pic32: Add PIC32 SPI master driver") Signed-off-by: Lukas Wunner Cc: # v4.7+ Cc: Purna Chandra Mandal Link: https://lore.kernel.org/r/9624250e3a7aa61274b38219a62375bac1def637.1604874488.git.lukas@wunner.de Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-pic32.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/spi/spi-pic32.c +++ b/drivers/spi/spi-pic32.c @@ -839,6 +839,7 @@ static int pic32_spi_probe(struct platfo return 0; err_bailout: + pic32_spi_dma_unprep(pic32s); clk_disable_unprepare(pic32s->clk); err_master: spi_master_put(master);