From mboxrd@z Thu Jan 1 00:00:00 1970 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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_BLOCKED,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 D239FC47080 for ; Mon, 31 May 2021 13:44:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5C24619C6 for ; Mon, 31 May 2021 13:44:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232515AbhEaNq2 (ORCPT ); Mon, 31 May 2021 09:46:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:39376 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232388AbhEaNbc (ORCPT ); Mon, 31 May 2021 09:31:32 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BFD1B61432; Mon, 31 May 2021 13:23:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622467427; bh=nnoVf5A9vs+dxKUhBfxsHFDLJkya+4vCJ8gyjvA8ur8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f4cXBhsKuC69O1xHnCsaF2I2F8YqGKssXkfLGt98yNhcXTs1cuB3pRNg4oL4bQUq2 zOFd7uNe0UynEJ+kVKCZOY+vIrv/Y2otXRUjWgBX+73wIVMIvq5WRuVGEX0VNNjXI9 tHIMYjXDzxdPRD01XV0IpQEHcAKoXKOkVgcJJVs4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lukas Wunner , Qinglang Miao , Mark Brown Subject: [PATCH 4.19 060/116] spi: mt7621: Disable clock in probe error path Date: Mon, 31 May 2021 15:13:56 +0200 Message-Id: <20210531130642.207493188@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130640.131924542@linuxfoundation.org> References: <20210531130640.131924542@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lukas Wunner commit 24f7033405abe195224ec793dbc3d7a27dec0b98 upstream. Commit 702b15cb9712 ("spi: mt7621: fix missing clk_disable_unprepare() on error in mt7621_spi_probe") sought to disable the SYS clock on probe errors, but only did so for 2 of 3 potentially failing calls: The clock needs to be disabled on failure of devm_spi_register_controller() as well. Moreover, the commit purports to fix a bug in commit cbd66c626e16 ("spi: mt7621: Move SPI driver out of staging") but in reality the bug has existed since the driver was first introduced. Fixes: 1ab7f2a43558 ("staging: mt7621-spi: add mt7621 support") Signed-off-by: Lukas Wunner Cc: # v4.17+: 702b15cb9712: spi: mt7621: fix missing clk_disable_unprepare() on error in mt7621_spi_probe Cc: # v4.17+ Cc: Qinglang Miao Link: https://lore.kernel.org/r/36ad42760087952fb7c10aae7d2628547c26a7ec.1607286887.git.lukas@wunner.de Signed-off-by: Mark Brown [lukas: backport to v4.19.192] Signed-off-by: Lukas Wunner Signed-off-by: Greg Kroah-Hartman --- drivers/staging/mt7621-spi/spi-mt7621.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/staging/mt7621-spi/spi-mt7621.c +++ b/drivers/staging/mt7621-spi/spi-mt7621.c @@ -487,7 +487,11 @@ static int mt7621_spi_probe(struct platf mt7621_spi_reset(rs, 0); - return spi_register_master(master); + ret = spi_register_master(master); + if (ret) + clk_disable_unprepare(clk); + + return ret; } static int mt7621_spi_remove(struct platform_device *pdev)