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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 A3BB0C43217 for ; Thu, 9 Sep 2021 11:44:02 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7312461284 for ; Thu, 9 Sep 2021 11:44:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7312461284 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+dvgSUJYRPSekQJ7nzTNtuh3ho1QhURDRMZciMkiulQ=; b=BV1IfVb/LaZJt1 Ejy4Jvrt6Q1IJRaAjcKkTU75Z6VMF+1/fdbqZrYsJYyelTuf5TmtofQHcW2JqFjDXPlr45kSiuiOf ihNFdPvxFr8nM0WVtdMkmxuscz1828ILmaWsnol1mBk8m5cYwjEREXRZfWMxW5nvXqGxMYmovWyXe TXDt6dfJJS1Te89knjoiu1zzvVnRdbS4Aik9FWG1HNFMoeIAVcgCuDw+NzT9kVjrzJk+U2YHe9In3 zpRRH2TqlvRUSaJCQdVuxaa8OrJ9wjKO4op4wiZgKabb9S4BW37B78mWj1OKrb5a9+QSrUB0jPBwy Y1UCeZKmi7yzFVJrOwKQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mOIRt-0093X5-TR; Thu, 09 Sep 2021 11:42:34 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mOIRb-0093NK-VP for linux-arm-kernel@lists.infradead.org; Thu, 09 Sep 2021 11:42:17 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id C105061213; Thu, 9 Sep 2021 11:42:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631187735; bh=cuOdGNw7f1QnFZNVV4eoDeQrIqRmu4KsyB2G/6dTrig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ld2j3tFUkK76VhvILCHgRxtCZRX/C9azLOyPuPCzDIfPw94M+p71Cs8mQgTTUtMpP +5pBuvc7vMR/VsMcqAPsLK/YX6t4I6WPLEbFOppFZ7NOp/q5x/d+A9crbrKc8srPbJ sEpqiniRxbXOhgqPM+07+oQDe90bL3vgnQ21Oiw64g0DZcJ/xh0zYesQCrZs5klowr UpuGWeVtQRlQF9+1rPV7tMc9YT0cheIr8nc3ulrq7fVxjKwpVyOIKdOxl17wZJrexl Tf3alKvWrUheSyxxvPPLNBo/vvYDU946IDDUzCx+MpoqWssfZ+tGSq2FxydtYV9CgK 4UwmfUdfuBbdw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Evgeny Novikov , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.14 054/252] media: platform: stm32: unprepare clocks at handling errors in probe Date: Thu, 9 Sep 2021 07:37:48 -0400 Message-Id: <20210909114106.141462-54-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909114106.141462-1-sashal@kernel.org> References: <20210909114106.141462-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210909_044216_068901_1AF037C4 X-CRM114-Status: GOOD ( 11.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Evgeny Novikov [ Upstream commit 055d2db28ec2fa3ab5c527c5604f1b32b89fa13a ] stm32_cec_probe() did not unprepare clocks on error handling paths. The patch fixes that. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Evgeny Novikov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/cec/platform/stm32/stm32-cec.c | 26 ++++++++++++++------ 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/media/cec/platform/stm32/stm32-cec.c b/drivers/media/cec/platform/stm32/stm32-cec.c index ea4b1ebfca99..0ffd89712536 100644 --- a/drivers/media/cec/platform/stm32/stm32-cec.c +++ b/drivers/media/cec/platform/stm32/stm32-cec.c @@ -305,14 +305,16 @@ static int stm32_cec_probe(struct platform_device *pdev) cec->clk_hdmi_cec = devm_clk_get(&pdev->dev, "hdmi-cec"); if (IS_ERR(cec->clk_hdmi_cec) && - PTR_ERR(cec->clk_hdmi_cec) == -EPROBE_DEFER) - return -EPROBE_DEFER; + PTR_ERR(cec->clk_hdmi_cec) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto err_unprepare_cec_clk; + } if (!IS_ERR(cec->clk_hdmi_cec)) { ret = clk_prepare(cec->clk_hdmi_cec); if (ret) { dev_err(&pdev->dev, "Can't prepare hdmi-cec clock\n"); - return ret; + goto err_unprepare_cec_clk; } } @@ -324,19 +326,27 @@ static int stm32_cec_probe(struct platform_device *pdev) CEC_NAME, caps, CEC_MAX_LOG_ADDRS); ret = PTR_ERR_OR_ZERO(cec->adap); if (ret) - return ret; + goto err_unprepare_hdmi_cec_clk; ret = cec_register_adapter(cec->adap, &pdev->dev); - if (ret) { - cec_delete_adapter(cec->adap); - return ret; - } + if (ret) + goto err_delete_adapter; cec_hw_init(cec); platform_set_drvdata(pdev, cec); return 0; + +err_delete_adapter: + cec_delete_adapter(cec->adap); + +err_unprepare_hdmi_cec_clk: + clk_unprepare(cec->clk_hdmi_cec); + +err_unprepare_cec_clk: + clk_unprepare(cec->clk_cec); + return ret; } static int stm32_cec_remove(struct platform_device *pdev) -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel