From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.cjdns.fr (mail.cjdns.fr [5.135.140.105]) (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 DF9FA2E8B78; Fri, 31 Oct 2025 08:22:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=5.135.140.105 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761898955; cv=none; b=OgHnR02gUj/6lika/0QxD3DsXowtyTU5JqT+iGZuNWfJBN6DdYMv7lSPyBqod7gJlsmEBweIBilwc7awAOzWyCNCvh9xb12Jmt6Im9XYDN3BaSsQQQ9q4tqEL9ORU+pExy2f4S2w2dQRWebJw9ZwMGZQk8if682/DUN/Jdooxa8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761898955; c=relaxed/simple; bh=62GjFdGWwbbzA3cm5sko4T/hxx35PdHGWci6ZMG3GSA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=egRWd693OmMbouaHLH6333yQtCgVfLwBrLgWpZt6JIk6IdZjDyy/lIMjDU+lnSeeL0JIJV9o9+avpJyg43aWRShe7N8tksKWewgnkDXvj/SGyif4nGfVXEs0whXdkow1ywFh++/ncIkwwXXlXBgfwfyO/wE6CHgHTAkiBukgX0Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cjdns.fr; spf=none smtp.mailfrom=cjdns.fr; dkim=pass (2048-bit key) header.d=cjdns.fr header.i=@cjdns.fr header.b=LSlR4IXh; arc=none smtp.client-ip=5.135.140.105 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cjdns.fr Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=cjdns.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cjdns.fr header.i=@cjdns.fr header.b="LSlR4IXh" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 56BF597720A; Fri, 31 Oct 2025 09:22:19 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cjdns.fr; s=dkim; t=1761898944; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=Qib6qRQMu5LVMMGbQVwGmu5XzHqsEzGPUdm1+2Fg8Jw=; b=LSlR4IXhs1thoBJw7RjsbQ2kPHdVT2DjByuTTOkK3UPb9+mxo6NJ4OYEkOnppZbI5rGz/W btyKf3Gnc3YLdHGnMQhETaGs4ArrNP2QLS/ZhSyUuV54vKZu8uEyVw/FgOAauVbfwuXUMZ kzrB7KIf3FrR95eYqazZFy2UeEjhj8UbsqJLoHE/3nPlWEeL7tcOKL8jWhAWTWTr8qi4k1 8v8dkeQ7iZdKietWGxL8AJeHat6lUKZrZkdY4rEngTDKP1TO6/UR4HJu5z8Vy18tLzMm7P hHs2iaFsAYppKcCTwsCCDkMh4PHmdyxZshGYiwHbZ+Aoe+Aj8y96H87eiutRsg== Message-ID: Date: Fri, 31 Oct 2025 09:22:18 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH] wifi: mt76: mmio_(read|write)_copy byte swap when on Big Endian To: kernel test robot , nbd@nbd.name, lorenzo@kernel.org Cc: oe-kbuild-all@lists.linux.dev, ryder.lee@mediatek.com, shayne.chen@mediatek.com, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org References: <20251027171759.1484844-1-cjd@cjdns.fr> <202510310816.kyDHJNiS-lkp@intel.com> Content-Language: en-US From: Caleb James DeLisle In-Reply-To: <202510310816.kyDHJNiS-lkp@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Last-TLS-Session-Version: TLSv1.3 On 31/10/2025 02:18, kernel test robot wrote: > Hi Caleb, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on wireless-next/main] > [also build test WARNING on wireless/main linus/master v6.18-rc3 next-20251030] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Caleb-James-DeLisle/wifi-mt76-mmio_-read-write-_copy-byte-swap-when-on-Big-Endian/20251028-012349 > base: https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main > patch link: https://lore.kernel.org/r/20251027171759.1484844-1-cjd%40cjdns.fr > patch subject: [PATCH] wifi: mt76: mmio_(read|write)_copy byte swap when on Big Endian > config: i386-randconfig-061-20251031 (https://download.01.org/0day-ci/archive/20251031/202510310816.kyDHJNiS-lkp@intel.com/config) > compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251031/202510310816.kyDHJNiS-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202510310816.kyDHJNiS-lkp@intel.com/ > > sparse warnings: (new ones prefixed by >>) >>> drivers/net/wireless/mediatek/mt76/mmio.c:41:24: sparse: sparse: cast from restricted __le32 >>> drivers/net/wireless/mediatek/mt76/mmio.c:41:24: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int val @@ got restricted __le32 [usertype] @@ This should not be an issue in PATCH v2 because it no longer uses a temporary variable. Thanks, Caleb > drivers/net/wireless/mediatek/mt76/mmio.c:41:24: sparse: expected unsigned int val > drivers/net/wireless/mediatek/mt76/mmio.c:41:24: sparse: got restricted __le32 [usertype] >>> drivers/net/wireless/mediatek/mt76/mmio.c:63:23: sparse: sparse: cast to restricted __le32 > vim +41 drivers/net/wireless/mediatek/mt76/mmio.c > > 32 > 33 static void mt76_mmio_write_copy_portable(void __iomem *dst, > 34 const u8 *src, int len) > 35 { > 36 __le32 val; > 37 int i = 0; > 38 > 39 for (i = 0; i < ALIGN(len, 4); i += 4) { > 40 memcpy(&val, src + i, sizeof(val)); > > 41 writel(cpu_to_le32(val), dst + i); > 42 } > 43 } > 44 > 45 static void mt76_mmio_write_copy(struct mt76_dev *dev, u32 offset, > 46 const void *data, int len) > 47 { > 48 if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) { > 49 mt76_mmio_write_copy_portable(dev->mmio.regs + offset, data, > 50 len); > 51 return; > 52 } > 53 __iowrite32_copy(dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4)); > 54 } > 55 > 56 static void mt76_mmio_read_copy_portable(u8 *dst, > 57 const void __iomem *src, int len) > 58 { > 59 u32 val; > 60 int i; > 61 > 62 for (i = 0; i < ALIGN(len, 4); i += 4) { > > 63 val = le32_to_cpu(readl(src + i)); > 64 memcpy(dst + i, &val, sizeof(val)); > 65 } > 66 } > 67 >