From patchwork Tue Feb 20 15:30:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Thompson X-Patchwork-Id: 775337 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (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 7144D762EB for ; Tue, 20 Feb 2024 15:30:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708443024; cv=none; b=Eofr7S75SufDOGsjROhoczcLB6lXU1ZfZxo+w9R5zcaJjOhrdNCdlE740ZxxfUrgUjmoJstc2URBQZARV/BrxZCOIk2xrmcTb2blgn26uHXUrxQSwk5VC1u3X3iXvMU/PxJPAJrkFzw9virPH+Ep/8ED/VPzSSAwSZ+6jkRAEuM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708443024; c=relaxed/simple; bh=Bdr6esLRbtemkpFIIDa1y5ugHKxf8AG0iRZ2eQuhhuA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=H/HYxGKUhSpoGx4ZHvibWTc2Pv/t1WL7/jDkf6pYU7n14dLKw8QQCDtFX2pzZtUqjZp/lvETL4n58e9fcvkRUxMKBPOjVzJsm9bqz3MHS0Xvivj1kX+ptnsirsElAwUIBYu1c4T4HiTVFR5hrlYYAf/tdAGrkqh8RJJg/wHJVKI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=BDpaT6P7; arc=none smtp.client-ip=209.85.128.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="BDpaT6P7" Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-4125e435b38so26689415e9.0 for ; Tue, 20 Feb 2024 07:30:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1708443021; x=1709047821; 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=CcW5EHUKgbIlTJ9AkvlcTH/1qNEKLD/WUfYuV6zpMeg=; b=BDpaT6P7UUbukpukR68XrAiSptr9PbQ3cDoVsbaLt+4JDqLwWvhDee/XGvf+A+d3tB KozFzOqrLfrvAQej5BtBLtp/GV4kqZHlzE6iumVRqnRTJjYyAUSW2h/8sYIoSF2Uanhn c6yzyMPMPZuAx4gqnrQ/dS8drqsDCpER9gkwfLNBB3phvWIrnAj1HqA/y7Gs8NfMb1JS g7mW6rguM6BeSwhMXeHYdTtsvFMfHvBzIdy9j+/tUHqQ8H7kfXNeu7b9kdNwVtlg2zPm F+RQidGPPsav8KDm64q+1NYt6RYgrTJAKbm/RtEtjIqHMpj9gCZEohafg7Pq3lrL1Z8F 14yA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708443021; x=1709047821; 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=CcW5EHUKgbIlTJ9AkvlcTH/1qNEKLD/WUfYuV6zpMeg=; b=pbITP4LShXw64mKsplFDXirnp9o+5uQjQSYH9BQv48myYoyj4R+dDc4xL8SB/c8ZPg oZMAYtioyar9IhprgG2FyE6nrLOuSXO3GX2dFkKLJ605Hb/SGjn0CzAxepTz2DFaBd26 vavJieD15x3+0xVr3nxRKANTsFqLzGTm8WpyFwbW7GQdgmUPHnaEoeEmphu+mDWLi8Ac 428qS7GahUcReimfGN4M31ktjNjocJzWF4P5HyifMbRNWSlAx8o6TaZCOU0m7ooFuMD5 FEfurd0ofIEZ19BGBYaiX1T2Q2AhwNzCc+zz1Lyu2/q9FaxHlJA4yoFFTjIyDAEriX71 Cyyw== X-Forwarded-Encrypted: i=1; AJvYcCVGv1fEjVYPD14/QmY4t6gNHh5+fvlECN6D0GrUhgAvFnySap/e3UIVwbV96dX5+IzKITOauiVu7SrYEA4TEPqxx92h9jGsXANJmSY= X-Gm-Message-State: AOJu0YzGW4ciClR+zNbl2SY+H+Liwzy4niqNRqfnD0lvrPHnGV7bp14S t08nzm68Lj5aegjQfVM3nBMHryfnr15b49W+28ugfk69AkaCXOid0RANHvxPcaY= X-Google-Smtp-Source: AGHT+IFRnEcCOrYMH/Z6LuCcovUr2mE5uwVOXe9d/ihECMTEDLLMcUoqMuZPky/aASEJWkUNQz7xAQ== X-Received: by 2002:a05:600c:1e01:b0:412:5f1f:fd0e with SMTP id ay1-20020a05600c1e0100b004125f1ffd0emr6114959wmb.0.1708443020878; Tue, 20 Feb 2024 07:30:20 -0800 (PST) Received: from aspen.lan (aztw-34-b2-v4wan-166919-cust780.vm26.cable.virginm.net. [82.37.195.13]) by smtp.gmail.com with ESMTPSA id m4-20020a05600c280400b0040fe308ff25sm14691564wmb.24.2024.02.20.07.30.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Feb 2024 07:30:19 -0800 (PST) From: Daniel Thompson To: Lee Jones , Jingoo Han Cc: Daniel Thompson , Luca Weiss , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/4] backlight: lp8788: Fully initialize backlight_properties during probe Date: Tue, 20 Feb 2024 15:30:07 +0000 Message-ID: <20240220153010.76238-4-daniel.thompson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240220153010.76238-1-daniel.thompson@linaro.org> References: <20240220153010.76238-1-daniel.thompson@linaro.org> Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 props is stack allocated and the fields that are not explcitly set by the probe function need to be zeroed or we'll get undefined behaviour (especially so power/blank states)! Fixes: c5a51053cf3b ("backlight: add new lp8788 backlight driver") Signed-off-by: Daniel Thompson --- drivers/video/backlight/lp8788_bl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c index d1a14b0db265b..31f97230ee506 100644 --- a/drivers/video/backlight/lp8788_bl.c +++ b/drivers/video/backlight/lp8788_bl.c @@ -191,6 +191,7 @@ static int lp8788_backlight_register(struct lp8788_bl *bl) int init_brt; char *name; + memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_PLATFORM; props.max_brightness = MAX_BRIGHTNESS;