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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B11FC433F5 for ; Thu, 7 Apr 2022 01:11:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234181AbiDGBM4 (ORCPT ); Wed, 6 Apr 2022 21:12:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234247AbiDGBMy (ORCPT ); Wed, 6 Apr 2022 21:12:54 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70637180234; Wed, 6 Apr 2022 18:10:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D290AB82691; Thu, 7 Apr 2022 01:10:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F602C385B4; Thu, 7 Apr 2022 01:10:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649293850; bh=AbRLW6KpKD4tIN4tfMldWC0Y7qjHWvaSMDBU+t7g3Ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R5JSUP+rx5nUwVraQtnucFOaZoEyT/Sr8SeB+97OeB8B+oulNy67ITuC+WEEZAg1A MwxifkgceBqePhGMIY8+A52W3ZwUdAoHCZOqJPYaq17n3zY5MdjexpjjSjzM7q+YAF mylISJiIALxWRL5CEGBCCjkgFRFLvfGk6aLtua/k3+LO95BPEyoWvcxPPx280i73xb X1iy+ePGPafnyWSQW89SBSkYmxM+RCwVhxbwy+SDhTo7f0R02aMsk2uFF/CnU8WUGW wdcPyh0w0Uclm5Hqq9mJfb4Ybc5mbGSh7nI+GacVB05hx3kkr+bol9eL/8RU1XbgfI PT1HusjdfCMfQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zheng Yongjun , Dmitry Torokhov , Sasha Levin , mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, linux-input@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.17 10/31] Input: stmfts - fix reference leak in stmfts_input_open Date: Wed, 6 Apr 2022 21:10:08 -0400 Message-Id: <20220407011029.113321-10-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220407011029.113321-1-sashal@kernel.org> References: <20220407011029.113321-1-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-input@vger.kernel.org From: Zheng Yongjun [ Upstream commit 26623eea0da3476446909af96c980768df07bbd9 ] pm_runtime_get_sync() will increment pm usage counter even it failed. Forgetting to call pm_runtime_put_noidle will result in reference leak in stmfts_input_open, so we should fix it. Signed-off-by: Zheng Yongjun Link: https://lore.kernel.org/r/20220317131604.53538-1-zhengyongjun3@huawei.com Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- drivers/input/touchscreen/stmfts.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c index bc11203c9cf7..72e0b767e1ba 100644 --- a/drivers/input/touchscreen/stmfts.c +++ b/drivers/input/touchscreen/stmfts.c @@ -339,11 +339,11 @@ static int stmfts_input_open(struct input_dev *dev) err = pm_runtime_get_sync(&sdata->client->dev); if (err < 0) - return err; + goto out; err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_ON); if (err) - return err; + goto out; mutex_lock(&sdata->mutex); sdata->running = true; @@ -366,7 +366,9 @@ static int stmfts_input_open(struct input_dev *dev) "failed to enable touchkey\n"); } - return 0; +out: + pm_runtime_put_noidle(&sdata->client->dev); + return err; } static void stmfts_input_close(struct input_dev *dev) -- 2.35.1