From patchwork Mon Jun 1 07:11:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Navid Emamdoost X-Patchwork-Id: 1301634 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=m/WEJHug; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49b5vZ3j4yz9sRN for ; Mon, 1 Jun 2020 17:11:54 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726072AbgFAHLx (ORCPT ); Mon, 1 Jun 2020 03:11:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725935AbgFAHLw (ORCPT ); Mon, 1 Jun 2020 03:11:52 -0400 Received: from mail-il1-x143.google.com (mail-il1-x143.google.com [IPv6:2607:f8b0:4864:20::143]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1070C061A0E; Mon, 1 Jun 2020 00:11:52 -0700 (PDT) Received: by mail-il1-x143.google.com with SMTP id r2so8432273ila.4; Mon, 01 Jun 2020 00:11:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=d2wjzu5hNjBN2lnlNJbakDYVSmEeQaYOmEfaX/yDMFc=; b=m/WEJHugJCTG/xEig0okL0reL6mjy1oztoHleupNk/tPGUEeHzXDx8zxLd1JSzUWYT LzePiPU6tBjB0vePm4fNQXoHI4NckA6HjK/m/mg1xO7X6ztL39PgnKhL6Nzhw7/zjC5l Immnx25barRzXWFkkL5KWJLjjtBRyTK1ADOObQSEivoGL5Q3YajlMn4AGxEUewLFCW+D C5ZHpRygttv/X4oQab2DVm/5Gnn5ZogEr/3lhZzXOYVQaPlbQ9RtTtNDK4wMy1+YRsiI Dzpzc+Ppvccub94Do7ttA0vYRd23QBFq14Vbc90/lOsYSHRMIiNb6NMh8P1N6VJ/4STC mzwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=d2wjzu5hNjBN2lnlNJbakDYVSmEeQaYOmEfaX/yDMFc=; b=DSx/1CctVtV+VTCgBBuNWcF1z/UT7WorCqthva6h38duqYJOPOtazDmPQqGQ0OTP1X Zf/jlcNpx3/ljxOCohxhF4sYhatNIKeDrGmpi6Slzm+u7J+TbVKUVF0tS7/uRVkHTNEY FKhkHQbWxEpj1GuRcg9XRXyPwIUUFu8eZbQ/au/8nscGCvsXSH4DKJYPoV2/VAWu1a1K Tzqhk7bqJrGsQkjHGjeIIxJjNJZJGRU98+mxpo7m/t49pRZD1OUBJXDXS4fwDqprAoo1 eHlX1RA7RGrFwKoaKrwnF1bgaCpE8W3hf3ZY76DQHPSi6PPt92bbnkoC0En4U8ERy0Wv bXPA== X-Gm-Message-State: AOAM5319ol26Ef3uiUc8Km9ExWSwG4LGxFNhS2JN7iEe2rriOpYYXaMK 7rjevwu3ElPF8gcCKwCTjZ8= X-Google-Smtp-Source: ABdhPJyCwgJytqUeyj8X/+cDcO+HQLzJ1l9BhFjpdwK/FGaM3IwMnpaG96lEeumn1BFl+g+VofVDNA== X-Received: by 2002:a92:6411:: with SMTP id y17mr20187975ilb.161.1590995512033; Mon, 01 Jun 2020 00:11:52 -0700 (PDT) Received: from cs-u-kase.dtc.umn.edu (cs-u-kase.cs.umn.edu. [160.94.64.2]) by smtp.googlemail.com with ESMTPSA id p75sm9366454ilb.23.2020.06.01.00.11.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jun 2020 00:11:51 -0700 (PDT) From: Navid Emamdoost To: Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: emamd001@umn.edu, wu000273@umn.edu, kjlu@umn.edu, smccaman@umn.edu, Navid Emamdoost Subject: [PATCH] pwm: img: call pm_runtime_put in pm_runtime_get_sync failed case Date: Mon, 1 Jun 2020 02:11:16 -0500 Message-Id: <20200601071116.69508-1-navid.emamdoost@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Even in failed case of pm_runtime_get_sync, the usage_count is incremented. In order to keep the usage_count with correct value call appropriate put. Signed-off-by: Navid Emamdoost --- drivers/pwm/pwm-img.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c index c9e57bd109fb..599a0f66a384 100644 --- a/drivers/pwm/pwm-img.c +++ b/drivers/pwm/pwm-img.c @@ -129,8 +129,10 @@ static int img_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, duty = DIV_ROUND_UP(timebase * duty_ns, period_ns); ret = pm_runtime_get_sync(chip->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_autosuspend(chip->dev); return ret; + } val = img_pwm_readl(pwm_chip, PWM_CTRL_CFG); val &= ~(PWM_CTRL_CFG_DIV_MASK << PWM_CTRL_CFG_DIV_SHIFT(pwm->hwpwm)); @@ -331,8 +333,10 @@ static int img_pwm_remove(struct platform_device *pdev) int ret; ret = pm_runtime_get_sync(&pdev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put(&pdev->dev); return ret; + } for (i = 0; i < pwm_chip->chip.npwm; i++) { val = img_pwm_readl(pwm_chip, PWM_CTRL_CFG);