From nobody Sun Feb 8 06:54:45 2026 Received: from mail-wm1-f45.google.com (mail-wm1-f45.google.com [209.85.128.45]) (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 6E78020DD4E for ; Wed, 30 Apr 2025 08:03:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746000233; cv=none; b=oEdQk+7X0YScfrCywzCkJWgxaf8yytt9YIxqB5rUCbBi0MGX6914QuqC2RfqA9eJgKgg3FIKSAQawbDsnHo9uHMDsfvMOvxElZ0T4IPskg5JKcyNmLBEAxRhzT+KfdsZJHdIX9yFrC13liVTdIwBzrPetocMsIC8LKgcwXJwMMI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746000233; c=relaxed/simple; bh=yDswBP+Kr+vPdFZzARL0WBNze344sfihA/wkyU8QgCw=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=Yi7zuFUDyKHJM60n1tqVBXUtqqq4ti54dEr8lGDgRhmEg1U9NqKPbmP424ptCOC8ZpDA32mH0pfDZHYA2FPBQvTmd/LmG9SNERkA8b/Ysg2eOAQJ4Jn/E7uk3e5kByVkTgStougeYraXhzUUtCNK71/5EGZjMRnUENQG3DubSyU= 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=lIbr+7CD; arc=none smtp.client-ip=209.85.128.45 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="lIbr+7CD" Received: by mail-wm1-f45.google.com with SMTP id 5b1f17b1804b1-43edecbfb46so43120495e9.0 for ; Wed, 30 Apr 2025 01:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1746000230; x=1746605030; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=PAFg7e7QoI/NIhOM4U0ox4at7LqC43f8tqWtCVElvxY=; b=lIbr+7CD3u5jFcrGbeQKmRxB1i+YkwIr34DFjuy5NoQtInCiMf1X8xjGyPZlhJdijG cmCQ2cF/y6yRo/efKL/DVSQWCfE4Infp1YW0tE7oHF6pWY+1IkabQck9SLtm0igyxfga vl0HVXidin0ydFsITHQLSdLTstVlbhoaXBFdIoRtgBC8QXmrP38iFNFTXa5uYWEsCN36 Y9Bx1xiCFeQSNMT7KbvhiJIp7X8d/Ap/SlfR6R/mm/8OvKfi90ZKM0qC1/iI7AkSZl3d DZK/NZFIIRUk8NGOe7ekHbdzokaFXNx1moDShEd3Ffi4QlyVtHijhQToqrvTiaOxCDxh g39w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746000230; x=1746605030; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=PAFg7e7QoI/NIhOM4U0ox4at7LqC43f8tqWtCVElvxY=; b=Fpm6em5zB3aVz7jKUPb5IeY0083ZvV+0dnISzUBY6hUzNEh7lqnSRkSeF7dC+ZKOG9 6QMqaOVmrA6RcdGvE6y1K3wN/xiThRNb9+gxyazVt5GV5Du8qDBHPK7NUVD2+Y8X0cX5 TPPq+CwOuxNeTucFgOKJDLEzEubKebG3O31nuNik5TTd4+dO/a1kHVyWrjklODxuD7tf zuJcwu/ftL7ce9MIfX3qzQVg1n+OZ5gTaiLuf6gHvp3OxwA8vsVlxFZ2QwIvCu5SRZeB Z8molIuOei5xOPxxg4i8sM3EUF2IAJ3YFl8nzt5sH7KOL0gruMF3BSE9gcBFemJTBExu CFmQ== X-Forwarded-Encrypted: i=1; AJvYcCWEWcw/AFN/P/gBUOViZ9UVvhtp8D7WQzAbszsCZvvnwsO+sDSh65ZAUba3Js21JTlWbqqtuZJlfUBtSSI=@vger.kernel.org X-Gm-Message-State: AOJu0YxAxkygDa36OGZ5vrRvQJOyYA2jnThhF0Z731iaIdUxwZJY2Agf qOOop1rjKJdrmRQV74kueN1CqIbCFqRISMN+ynpVbpM/V2WySbpfye78d4Ww99Q= X-Gm-Gg: ASbGnct0E3R+mnU3RGbJ6gbd90IC4ZtECAjJM99segnieduImeXtlNX3iG00BUdqLMY ApZdukYjnB8xBZRXIAhj9PdBY0SnMWSb2M5yrBqq3O7wMoEGAJ9oLX3RaoVg70peBKoJNQuH45w gpOe8mYFiAQUgc37l0m5WmrjApowskqUkaTD8zSCnlKivPlq2V+zXi0/wEeuNcSx+ZiWRY6Ar6k N2TEj3F8wHovlgDOrVNVN1fWIrOsdu4EIP0wfVEEGMN2BKBYDD40JLZRPo9KeHJ9dPq7BHxJ2rn Okkfh817JTyXjXLVnFZtcgtqZo1Ef7mReItFC4UydO2MMA== X-Google-Smtp-Source: AGHT+IFi58B/opSrTiSCQEZcXK3JMBecxGa6PyaQe84wc8+j1ywljyVjJeAqD6J4qh7EoSFT1wKxSA== X-Received: by 2002:a05:600c:4ec6:b0:43d:a90:9f1 with SMTP id 5b1f17b1804b1-441b2635482mr12037525e9.6.1746000229687; Wed, 30 Apr 2025 01:03:49 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-441b2af2922sm15458155e9.17.2025.04.30.01.03.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Apr 2025 01:03:49 -0700 (PDT) Date: Wed, 30 Apr 2025 11:03:46 +0300 From: Dan Carpenter To: Marcus Folkesson Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Javier Martinez Canillas , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH next] drm/st7571-i2c: Fix IS_ERR() vs NULL checks in probe() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The devm_kzalloc() function returns NULL on failure, not error pointers. Also printing an error message for kmalloc() failures is against kernel style so just return -ENOMEM without printing a message. (Kmalloc already prints a message). Fixes: 4b35f0f41ee2 ("drm/st7571-i2c: add support for Sitronix ST7571 LCD c= ontroller") Signed-off-by: Dan Carpenter Reviewed-by: Javier Martinez Canillas --- drivers/gpu/drm/tiny/st7571-i2c.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/tiny/st7571-i2c.c b/drivers/gpu/drm/tiny/st757= 1-i2c.c index dc410ec41baf..eec846892962 100644 --- a/drivers/gpu/drm/tiny/st7571-i2c.c +++ b/drivers/gpu/drm/tiny/st7571-i2c.c @@ -908,16 +908,14 @@ static int st7571_probe(struct i2c_client *client) st7571->hwbuf =3D devm_kzalloc(&client->dev, (st7571->nlines * st7571->ncols * st7571->bpp) / 8, GFP_KERNEL); - if (IS_ERR(st7571->hwbuf)) - return dev_err_probe(&client->dev, PTR_ERR(st7571->hwbuf), - "Failed to allocate intermediate buffer\n"); + if (!st7571->hwbuf) + return -ENOMEM; =20 st7571->row =3D devm_kzalloc(&client->dev, (st7571->ncols * st7571->bpp), GFP_KERNEL); - if (IS_ERR(st7571->row)) - return dev_err_probe(&client->dev, PTR_ERR(st7571->row), - "Failed to allocate row buffer\n"); + if (!st7571->row) + return -ENOMEM; =20 ret =3D st7571_mode_config_init(st7571); if (ret) --=20 2.47.2