From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 022BFC8303C for ; Wed, 2 Jul 2025 22:06:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rYH1gHsmyWLVc3usaRvZHmt1Zq4Huo9kCMOq9q8/jNE=; b=VVEVuA2BmWBGJpWBRScQTkyDBk ViGybpOw8SKFkFRipzFlGB7iENmIvwlVRu4XeIEgFa4EUucQXldg5vHNpkSuMO4ZLq690WCyHqjlF dr7y7re/usUNwzhIe4+svPENCgCxH+iJDlKuPpdVQ1k+uWTohfcykL+utc/hmliUtkkaBpKoCcgFt jfFJrzeT5IaDUhBzgHcnzP0HUn03/oN9XpcspIeAx8hgTexYhwNwesqVBTz/PFLldVax3nrITyVLG fSN05n/VO42Ix2InZM7XmxVyfjXHLsYwXWkivD2AIYm2jsNik0iriY+uOomoPn11MqxUAXj0L+oFe P4ORP1fQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uX5bR-00000009f4w-2r74; Wed, 02 Jul 2025 22:06:53 +0000 Received: from zeus03.de ([194.117.254.33] helo=mail.zeus03.de) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uTnEo-00000003sRu-2TRq for linux-i3c@lists.infradead.org; Mon, 23 Jun 2025 19:53:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=cH7K nOxBUZBuXKRnPPy6pTRvR1h8NRqONwt2Cqt9QcU=; b=hnBYidR3z8bVpw3W3ITm iRoMGrhyxIAoMbVAKhZENg7BWH4XHMh3WLGRX5erN29zvegArWhW9uJVGd1z/+eb XnltWc4IDAmhZHymuP+5nFu8qJd1mvw0h8GAWUqlT9sWDedHFyiAKFt0DCGh1RDj Wd3jQxsCr4aSA3zJVSxBNFoZg6NXrvl6PHXd/j5C5VC41EfUe4V2tyWHafsp4ZZy rUZeC8V5aIT51KrkEnTETO8yHHho0ZYBAOGbUGNM5t8JVycrOBSPuDvx61QtK55e pg9KScMY/y/RtZN4s3OCkV/pyETt9V3nBqzq43GclmSSLd1s2NkHU39Wop4Vdz3E zg== Received: (qmail 3961359 invoked from network); 23 Jun 2025 21:53:50 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 23 Jun 2025 21:53:50 +0200 X-UD-Smtp-Session: l3s3148p1@O6QRkkI4iIlb5ybD Date: Mon, 23 Jun 2025 21:53:44 +0200 From: Wolfram Sang To: Jorge Marques Cc: Alexandre Belloni , Frank Li , =?utf-8?Q?Przemys=C5=82aw?= Gaj , linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/3] i3c: master: Add inline i3c_readl_fifo() and i3c_writel_fifo() Message-ID: References: <20250622-i3c-writesl-readsl-v2-0-2afd34ec6306@analog.com> <20250622-i3c-writesl-readsl-v2-1-2afd34ec6306@analog.com> MIME-Version: 1.0 In-Reply-To: <20250622-i3c-writesl-readsl-v2-1-2afd34ec6306@analog.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250623_125355_490767_C8EE9287 X-CRM114-Status: GOOD ( 11.31 ) X-Mailman-Approved-At: Wed, 02 Jul 2025 15:04:02 -0700 X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1400029543593950372==" Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org --===============1400029543593950372== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="FBNJcydYAuSpbMsr" Content-Disposition: inline --FBNJcydYAuSpbMsr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jun 22, 2025 at 11:18:58AM +0200, Jorge Marques wrote: > The i3c abstraction excepts u8 buffers, but some controllers have a bus > width of 32-bits and don't support flagging valid bytes, so it is > required to read/write long words and to use memcpy on the remainder of > the number of bytes by 32-bits to not write/read outside the buffer > bounds. >=20 > Signed-off-by: Jorge Marques Despite Frank's valid comments, I tested this code with the Renesas driver and it worked so far. Thanks! 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