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=-19.7 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=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 CAF84C43611 for ; Wed, 5 May 2021 16:36:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EAF96194F for ; Wed, 5 May 2021 16:36:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234314AbhEEQhP (ORCPT ); Wed, 5 May 2021 12:37:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:53294 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234786AbhEEQfD (ORCPT ); Wed, 5 May 2021 12:35:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BAACE613FC; Wed, 5 May 2021 16:32:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620232376; bh=LOY+2umU38duiEhfLe5WxFGdlFE8datgP10oqSVAxp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Li5a6F50OMrt6XmZpXfQ0N/3Gx3gGi1ym9Il6UfMKXUE5i7DiVs03egEtIwQWBuBB 7hSzYUN3LlQfqI/XAINAS1VelPqcJEXWhGUUcyGMEkmN2rtiOkfdBlq4PsoymZZbsD HdjIt9fLXYhxtLwF+cfEe7NstgUshMKGXnLEiBG7vx7xsYb8/lBROKvtZAgRxnKsOK 61g8NTYWcW19Bd9hClClokFv5ZVYYPXoxsJOJvbRQ6YZrdV0x8+r7LbtkycPhI310M +s7V02aZDzf6qgLAtYGWKYakjpOf1Q6CLLj6aYpcZ+PRN4wEJUnKqnhQcRLrZyaTGP taLLZ9kvD/5xw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ye Weihua , Hulk Robot , Wolfram Sang , Sasha Levin , linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.12 065/116] i2c: imx: Fix PM reference leak in i2c_imx_reg_slave() Date: Wed, 5 May 2021 12:30:33 -0400 Message-Id: <20210505163125.3460440-65-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210505163125.3460440-1-sashal@kernel.org> References: <20210505163125.3460440-1-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-kernel@vger.kernel.org From: Ye Weihua [ Upstream commit c4b1fcc310e655fa8414696c38a84d36c00684c8 ] pm_runtime_get_sync() will increment the PM reference count even on failure. Forgetting to put the reference again will result in a leak. Replace it with pm_runtime_resume_and_get() to keep the usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Ye Weihua Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index b80fdc1f0092..5fd8201a14cd 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -801,7 +801,7 @@ static int i2c_imx_reg_slave(struct i2c_client *client) i2c_imx->last_slave_event = I2C_SLAVE_STOP; /* Resume */ - ret = pm_runtime_get_sync(i2c_imx->adapter.dev.parent); + ret = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent); if (ret < 0) { dev_err(&i2c_imx->adapter.dev, "failed to resume i2c controller"); return ret; -- 2.30.2