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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0F9E8C07E9A for ; Sun, 4 Jul 2021 23:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEB0A61879 for ; Sun, 4 Jul 2021 23:09:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232000AbhGDXMU (ORCPT ); Sun, 4 Jul 2021 19:12:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:50794 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232330AbhGDXLS (ORCPT ); Sun, 4 Jul 2021 19:11:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B6A1961959; Sun, 4 Jul 2021 23:08:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625440092; bh=Lz+/JlLUf0y6vdpM5zzN5Pg+5vyv1ERRqgWrhzFUI5w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BXgy5YLlAC05XiKJrk14whJlUc3teeZda8NG699KHduzpfybqldbAC0Ai2xOCyhNg FPFBQove+cNa6RBe5p+1Qn84oQiADaL+jB4Ud5EGLvr9nyGqG85MyhMTR/ysyIJzrr x9Ims8KO1VcN1YcYCjFJU4h2MGO9H368Ug+O7+qtQ4bT7g2Qi8wUvsTjUyCEV+nov+ 39mpEyWyJ8BQHdFvf4oA/8rUuHZWslHGMfMAoC2l4Db4D7/+/0bV16fUezCbZks+WL SKrhhJ77CclJe+k1mTnTlC83yp8UCBJpV8t/l2uZhBzdvy1nCzxbdvJC9iC/YY4U68 lELz7pn2YdZNQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mauro Carvalho Chehab , Jonathan Cameron , Sylwester Nawrocki , Marek Szyprowski , Sasha Levin , linux-samsung-soc@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH AUTOSEL 5.10 06/70] media: s5p: fix pm_runtime_get_sync() usage count Date: Sun, 4 Jul 2021 19:06:59 -0400 Message-Id: <20210704230804.1490078-6-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210704230804.1490078-1-sashal@kernel.org> References: <20210704230804.1490078-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Mauro Carvalho Chehab [ Upstream commit fdc34e82c0f968ac4c157bd3d8c299ebc24c9c63 ] The pm_runtime_get_sync() internally increments the dev->power.usage_count without decrementing it, even on errors. Replace it by the new pm_runtime_resume_and_get(), introduced by: commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") in order to properly decrement the usage counter, avoiding a potential PM usage counter leak. While here, check if the PM runtime error was caught at s5p_cec_adap_enable(). Reviewed-by: Jonathan Cameron Reviewed-by: Sylwester Nawrocki Acked-by: Marek Szyprowski Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/cec/platform/s5p/s5p_cec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/cec/platform/s5p/s5p_cec.c b/drivers/media/cec/platform/s5p/s5p_cec.c index 2a3e7ffefe0a..2250c1cbc64e 100644 --- a/drivers/media/cec/platform/s5p/s5p_cec.c +++ b/drivers/media/cec/platform/s5p/s5p_cec.c @@ -35,10 +35,13 @@ MODULE_PARM_DESC(debug, "debug level (0-2)"); static int s5p_cec_adap_enable(struct cec_adapter *adap, bool enable) { + int ret; struct s5p_cec_dev *cec = cec_get_drvdata(adap); if (enable) { - pm_runtime_get_sync(cec->dev); + ret = pm_runtime_resume_and_get(cec->dev); + if (ret < 0) + return ret; s5p_cec_reset(cec); -- 2.30.2