From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (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 3EFC426C3BE for ; Mon, 1 Sep 2025 07:26:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756711610; cv=none; b=Mylaz0MmzUry/DI9XEry5EI4wqumduSakpxjdrmYFIbyV9zjgqcpHLrOp8ioiHviNc7+zDW6F2jrxJqNOH1esAQfo1HbjU1k9ZXUFfAQ7xomWM1wDOIsWc8It2KzAMaW0miBMqMwlsIUOJ4ATUcq1WYO/e7diyk31VIC+i7MNfM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756711610; c=relaxed/simple; bh=pSHwAFwOfxOBvMo2kM3V6r4cQ6ye7Bys4JLLOIbr5PI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Eu7kxo6Z72O2oMtfjqEXN6AH6Okynuhfp+hi8txDH7W3hnCRgdAbIb7kIvtd6WEiKpcwC2LCNLPErhmbqAQggnvirjRLkOpF14qFXdQYWkLnEENpLXzFOAp8rFledO4V+44ezTJTpBFgrOvFKmtAyrv7boEizsHQdwiP6MhP9Hg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=rF5xMTXk; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="rF5xMTXk" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id E930A1A0D7C; Mon, 1 Sep 2025 07:26:40 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id BFF1060699; Mon, 1 Sep 2025 07:26:40 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 3A0761C22C8BB; Mon, 1 Sep 2025 09:26:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1756711599; h=from:subject:date:message-id:to:cc:mime-version:content-type: in-reply-to:references; bh=xX3xnbfaXObDKRcnsl31P/YbYD6AiX8y2WIn/LzP6VQ=; b=rF5xMTXk0xL8N4aA2p82VmeP5KdoSALmQXlcJp5aOLjhIxxTslGkfghuWytMMJTr7pLOFJ V8SB33LvJOhKvd78TOhZ8gO033NN1Fuchh55r9A8IvMRB3LF5OdWqqHbscQZnG8GizfmVm B3e4fs6fQ7Vw9w26+gD3Ha5+0529+9BNQEYLk5s1gdaFpFiT49cLzItL1ela11+OMJjDh+ 0Dn0EfXx6MWZkyPmZNQEEkOJ+TG4nMGd61v7xPGcXRfVHa7H9Db5NA2dVVq9O/9SXl5f9j EFU55zXk2fdMfJZEqnpBbijIU3CHzfq/7WGsxVnxJ9tgAtLH+v/K002xK+JBFw== Date: Mon, 1 Sep 2025 09:26:35 +0200 From: Alexandre Belloni To: kernel test robot Cc: Jorge Marques , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Frank Li Subject: Re: drivers/i3c/master/../internals.h:53:9: error: passing 'const void *' to parameter of type 'void *' discards qualifiers Message-ID: <20250901072635d908c251@mail.local> References: <202509011442.yweEPWw4-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202509011442.yweEPWw4-lkp@intel.com> X-Last-TLS-Session-Version: TLSv1.3 Hello, On 01/09/2025 14:25:03+0800, kernel test robot wrote: > Hi Jorge, > > FYI, the error/warning still remains. The issue is not in the i3c code but in the sparc64 code. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: b320789d6883cc00ac78ce83bccbfe7ed58afcf0 > commit: c20d3fa7049144f519b21616e6020e6939822145 i3c: master: cdns: Use i3c_writel_fifo() and i3c_readl_fifo() > date: 5 weeks ago > config: sparc64-randconfig-001-20250901 (https://download.01.org/0day-ci/archive/20250901/202509011442.yweEPWw4-lkp@intel.com/config) > compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250901/202509011442.yweEPWw4-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/202509011442.yweEPWw4-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > In file included from drivers/i3c/master/i3c-master-cdns.c:26: > >> drivers/i3c/master/../internals.h:53:9: error: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] > 53 | readsl(addr, buf, nbytes / 4); > | ^~~~ > arch/sparc/include/asm/io_64.h:265:41: note: passing argument to parameter 'port' here > 265 | static inline void readsl(void __iomem *port, void *buf, unsigned long count) > | ^ > 1 error generated. > > > vim +53 drivers/i3c/master/../internals.h > > 733b439375b494 Jorge Marques 2025-06-24 43 > 733b439375b494 Jorge Marques 2025-06-24 44 /** > 733b439375b494 Jorge Marques 2025-06-24 45 * i3c_readl_fifo - Read data buffer from 32bit FIFO > 733b439375b494 Jorge Marques 2025-06-24 46 * @addr: FIFO Address to read from > 733b439375b494 Jorge Marques 2025-06-24 47 * @buf: Pointer to the buffer to store read bytes > 733b439375b494 Jorge Marques 2025-06-24 48 * @nbytes: Number of bytes to read > 733b439375b494 Jorge Marques 2025-06-24 49 */ > 733b439375b494 Jorge Marques 2025-06-24 50 static inline void i3c_readl_fifo(const void __iomem *addr, void *buf, > 733b439375b494 Jorge Marques 2025-06-24 51 int nbytes) > 733b439375b494 Jorge Marques 2025-06-24 52 { > 733b439375b494 Jorge Marques 2025-06-24 @53 readsl(addr, buf, nbytes / 4); > 733b439375b494 Jorge Marques 2025-06-24 54 if (nbytes & 3) { > 733b439375b494 Jorge Marques 2025-06-24 55 u32 tmp; > 733b439375b494 Jorge Marques 2025-06-24 56 > 733b439375b494 Jorge Marques 2025-06-24 57 tmp = readl(addr); > 733b439375b494 Jorge Marques 2025-06-24 58 memcpy(buf + (nbytes & ~3), &tmp, nbytes & 3); > 733b439375b494 Jorge Marques 2025-06-24 59 } > 733b439375b494 Jorge Marques 2025-06-24 60 } > 733b439375b494 Jorge Marques 2025-06-24 61 > > :::::: The code at line 53 was first introduced by commit > :::::: 733b439375b494e8a6950ab47d18a4b615b73cb3 i3c: master: Add inline i3c_readl_fifo() and i3c_writel_fifo() > > :::::: TO: Jorge Marques > :::::: CC: Alexandre Belloni > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki -- Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com