From patchwork Mon Nov 11 20:20:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 843304 Received: from mail-qv1-f43.google.com (mail-qv1-f43.google.com [209.85.219.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C98D71C9EA6; Mon, 11 Nov 2024 20:20:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731356418; cv=none; b=X7wUZA2flR7s7o5z+fyRBwiG7L+uGESP148BnLB8EcLR+zAFVtBxP1NEKf5LEqpL6ZJxqFOA9mp2t1Ux+gcdRU/09vDM5sbTpMEIcF+U4OU516dbsnCOMsTi9XlajsVHYn1lGLPh874zjQenf3WiSTl4Pci3g3Cx6DSsPDRH+Ns= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731356418; c=relaxed/simple; bh=vCNsRg2RULMRgn6h/rZA4wBCYVEKg21gJvIFmtNIt3s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=M5RaQD3sfBMl9cVRj3Rfix/in3umB7v+R9i0hLdr8CFNwEO7TvVdZCC+L97iH5rYvxbF+dAxQvybgXN1bciFGwLT9RJvfkWkU1QPlwgIusSQ/+PiAgX0yKokcchLmbStEWDEQtJSIjFc1cuNpWgzmVIk1Y05LX8civPzZfpIVTY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=BkT7xbLi; arc=none smtp.client-ip=209.85.219.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BkT7xbLi" Received: by mail-qv1-f43.google.com with SMTP id 6a1803df08f44-6d18dff41cdso28840696d6.0; Mon, 11 Nov 2024 12:20:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1731356416; x=1731961216; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zrQs/OYc3daykzkmJWefzlGVlzHWJgnkpnytdRTsj7A=; b=BkT7xbLiCd5f0ivWvgTK0pubugBgVNnMbObjxD+0oFhFV4HYgVQNREvlZ1bTG7lBmc GuiXmKBL+FGnxUy8Rma8sgE14j3s3Y1BcLN7f7mr9dsyqs4zMEleWLWD05or3CHaD9S3 6mIuqzEgh4zdlrvNzRhMC4ZGJcXnJGjNm98xR36jtUA8c8/ZtwS1K9ZaqM0P645QRlES Nbi4YuLQcv5hVcgTUoKk1CVaefPjjRpdZcc58aqPvjKl46rt6i18AmH1mPZXc9ta1as0 BhwhpaDSedvmI7LfMHcoFFhanUo9kwTEtFAfRE4I/FUP+tDqDhW8LbCz6fWYVt1+rvIZ z1ag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731356416; x=1731961216; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zrQs/OYc3daykzkmJWefzlGVlzHWJgnkpnytdRTsj7A=; b=LwpP/d5/JEM0REaCBHOpXYUqcvWBlyHYz1dlQT0dcUi0S8yctD1evZblTnfj+YNtVO LDa/GZYxZtknCsalTl6qlXsdZLOIhaWRU9hTIcnF+d3h6FPzsAUdvkDNBUrgoM3jqwv1 P/Rwr4lLDfX2BEZb/5qmBr4ZoWqKujCkgE0x2BWx8K/TKh17Ffl7xh86njvrRLgqup4c Mmcj5/gpOb55dtOMip+7Rijy5GORbTNdKoplFXftn6j2X8eBGJFYGNfxRhL4y+g+ZIk9 5bexrtWIg+iVOr3zvVgpLCgSav+1arwhjlVJ91BpTVJ1GraG7HU72Awu2btbXjW3WPhL G4dw== X-Forwarded-Encrypted: i=1; AJvYcCXa/P/hBMOZrrMg+E4/1JJD2+8mT1VBHNrAD61RZSdQTV6dxMZf97Pc41dPjQTdJdZFbmV7NhbPXA85fn4=@vger.kernel.org X-Gm-Message-State: AOJu0YysR4gre7vfO3TwQmUt5KcIXRHoFDe6bip/DnODuDBUN9Qwpgm/ UHeTyTIXciEdDS5GZ+bJPdzBgKM2mn6B4n/0u2FxsTMuBabl+pdR X-Google-Smtp-Source: AGHT+IEl0MljiI7wwIIsG9uI/z3cXsL++QA9CqJw1RY/KjUos/+zmfgWLWzWGBJWsXUl3rjl5aUf/g== X-Received: by 2002:a05:6214:320f:b0:6cb:e5ba:3117 with SMTP id 6a1803df08f44-6d39e197839mr197721056d6.23.1731356415704; Mon, 11 Nov 2024 12:20:15 -0800 (PST) Received: from newman.cs.purdue.edu ([128.10.127.250]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6d3961ed242sm63254846d6.34.2024.11.11.12.20.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Nov 2024 12:20:15 -0800 (PST) From: Jiasheng Jiang To: dmitry.torokhov@gmail.com, broonie@opensource.wolfsonmicro.com, kgene.kim@samsung.com, kyungmin.park@samsung.com, jy0922.shim@samsung.com, vkoul@kernel.org, arnd@arndb.de, nikita.shubin@maquefel.me, hartleys@visionengravers.com, christophe.jaillet@wanadoo.fr, shiraz.linux.kernel@gmail.com, rajeev-dlh.kumar@st.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Jiasheng Jiang Subject: [PATCH] Input: spear-keyboard - Add check for clk_enable() Date: Mon, 11 Nov 2024 20:20:06 +0000 Message-Id: <20241111202006.6669-3-jiashengjiangcool@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241111202006.6669-1-jiashengjiangcool@gmail.com> References: <20241111202006.6669-1-jiashengjiangcool@gmail.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add check for the return value of clk_enable() in order to catch the potential exception. Fixes: 8314f532ebd5 ("Input: spear_keyboard - reconfigure operating frequency on suspend") Fixes: bc95df78c456 ("Input: add support for keyboards on ST SPEAr platform") Signed-off-by: Jiasheng Jiang --- drivers/input/keyboard/spear-keyboard.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/input/keyboard/spear-keyboard.c b/drivers/input/keyboard/spear-keyboard.c index 1df4feb8ba01..fe0a33862e60 100644 --- a/drivers/input/keyboard/spear-keyboard.c +++ b/drivers/input/keyboard/spear-keyboard.c @@ -273,11 +273,16 @@ static int spear_kbd_suspend(struct device *dev) struct spear_kbd *kbd = platform_get_drvdata(pdev); struct input_dev *input_dev = kbd->input; unsigned int rate = 0, mode_ctl_reg, val; + int ret; mutex_lock(&input_dev->mutex); /* explicitly enable clock as we may program device */ - clk_enable(kbd->clk); + ret = clk_enable(kbd->clk); + if (ret) { + mutex_unlock(&input_dev->mutex); + return ret; + } mode_ctl_reg = readl_relaxed(kbd->io_base + MODE_CTL_REG); @@ -325,6 +330,7 @@ static int spear_kbd_resume(struct device *dev) struct platform_device *pdev = to_platform_device(dev); struct spear_kbd *kbd = platform_get_drvdata(pdev); struct input_dev *input_dev = kbd->input; + int ret; mutex_lock(&input_dev->mutex); @@ -334,8 +340,13 @@ static int spear_kbd_resume(struct device *dev) disable_irq_wake(kbd->irq); } } else { - if (input_device_enabled(input_dev)) - clk_enable(kbd->clk); + if (input_device_enabled(input_dev)) { + ret = clk_enable(kbd->clk); + if (ret) { + mutex_unlock(&input_dev->mutex); + return ret; + } + } } /* restore current configuration */