From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C8B34D90A1; Tue, 9 Jun 2026 19:17:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781032681; cv=none; b=SM3InJdcLULfQPnD7t4HdZQyZYg82KfW/Qx1bjVQ22ywtWwprFaWrsQphdFM77fn0bYtIOGUGr43hb8MQzSIFXdAc8WfOjn2JBBeoCqZFefnEr+c8W48A0FFM+RvkZOwh5iOTs0eFoO4VvyL0hsWcFy3Ip9yx3tX8KOzh/6C24c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781032681; c=relaxed/simple; bh=MTwsqfpI91yD0Y/+0nOvP+mQrtShptVr2NvwI5cxpnA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hIjWkZZh2OSQhCP7U6a5s5e6rz8LCsWzk5vxdPTuViRjOda6Y48XC+qJPw4IAwC2LSgy/poegFIr+wPkHzgAG1dWGttRfeaJvfRHh+ABdaiVeW8PenkcQENnopPYfWp0cDnIZSvreSPXxaGJErkPwdx03kS3isHxVKR7QRceFR8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=OCn7kXGn; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="OCn7kXGn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1781032679; x=1812568679; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=MTwsqfpI91yD0Y/+0nOvP+mQrtShptVr2NvwI5cxpnA=; b=OCn7kXGnxujXwcPmUrC2R5vyMVOlqh7IiDCko1yC/fiS325+SL1mnE7H sIDul9AqFTRnWZMb4bIE3Q5rsSAT5QJDB8L4OkDd/EH0mtC5pyC/trx9u QnnDMrd+MiYbgtZ6GczD0zfzo784Jid5Cfw4aNwmOveA15z2QDHHXjj9G HhsdziRc+iz4jg7lgTitzDypnHvkDs9AoqVJoXbYDfBvYzeN5/otpwVu0 F4BcnNEYvuWmh2QFfjJAFvKdUPwNAcTckRbwhGcbCFtJ83DcmUgSqUq76 OlmOZurFRv1/hDeLrFXyo7QXEnwKfw4lM/k7aFWUThFf9EhgsPKV4BmXD w==; X-CSE-ConnectionGUID: KFGlZF46THeYcpnM5b64Ww== X-CSE-MsgGUID: HmFWX+HeTwK0jjqjv0Njrw== X-IronPort-AV: E=McAfee;i="6800,10657,11812"; a="99227005" X-IronPort-AV: E=Sophos;i="6.24,196,1774335600"; d="scan'208";a="99227005" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2026 12:17:58 -0700 X-CSE-ConnectionGUID: HucDC72aTtue2Pp5rbNfxg== X-CSE-MsgGUID: xJ6+Pb4NQQmRtoZsYTuqNg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,196,1774335600"; d="scan'208";a="276140448" Received: from pgcooper-mobl3.ger.corp.intel.com (HELO localhost) ([10.245.245.162]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2026 12:17:54 -0700 Date: Tue, 9 Jun 2026 22:17:51 +0300 From: Andy Shevchenko To: Svyatoslav Ryhel Cc: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Helge Deller , Johan Hovold , dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-fbdev@vger.kernel.org Subject: Re: [PATCH v4 10/14] mfd: lm3533: Set DMA mask Message-ID: References: <20260606045738.21050-1-clamor95@gmail.com> <20260606045738.21050-11-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260606045738.21050-11-clamor95@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Sat, Jun 06, 2026 at 07:57:34AM +0300, Svyatoslav Ryhel wrote: > Missing coherent_dma_mask assigning triggers the following warning in > dmesg: > > [ 3.287872] platform lm3533-backlight.0: DMA mask not set > > Since this warning might be elevated to an error in the future, set > coherent_dma_mask to zero because both the core and cells do not utilize > DMA. Hmm... I am not sure about this. The entire kernel has only two drivers that do that, and thanks to their commit messages one of them pointed out to the commit from 2018. So, if no other devices suffer from this, I think it has to be a better way of achieving the same. -- With Best Regards, Andy Shevchenko