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 X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA834C4724C for ; Thu, 30 Apr 2020 14:17:15 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A7BC6206D9 for ; Thu, 30 Apr 2020 14:17:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ddabVdkx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A7BC6206D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=the-dreams.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject: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=zed0cU3qiljCYkBu2yuikmALL6DhTVvsfR4ItFb7Oek=; b=ddabVdkx4vmpZrVq7ArKhwL62 7SHowP/EUlauuRAtQwL2SuX7j+rWUXIsvuOmlRTvGNy3viY9dAOsxJZKaJFua0vG9RJwlK1j2H36F zPQckuuzDpqQWSH7DuT5u0bOxT5G/aBLmX0Dt9p0W5P0vOLmRLOLePtTQavYl4+AxuIUf23pxguLu rvEnFuFGKIDPmzHCDauwtODPW2pGcNitDceVuGz9XRC0ulH20FEMv9PftIEUTSMhPm4HaBhBl7Sn2 yoCg+YRfbNL3/070gl5DGBtPmBQpVdxqJBgvtYHy/sPQpeJ0hzJ3wFSkXiWgTHax2R+N7QFc+brNM zJls5W1GQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jU9zx-0000To-Tk; Thu, 30 Apr 2020 14:17:09 +0000 Received: from sauhun.de ([88.99.104.3] helo=pokefinder.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jU9zu-0000ON-CH for linux-arm-kernel@lists.infradead.org; Thu, 30 Apr 2020 14:17:08 +0000 Received: from localhost (p5486CDDB.dip0.t-ipconnect.de [84.134.205.219]) by pokefinder.org (Postfix) with ESMTPSA id 865B62C08FC; Thu, 30 Apr 2020 16:17:01 +0200 (CEST) Date: Thu, 30 Apr 2020 16:17:01 +0200 From: Wolfram Sang To: ryan_chen Subject: Re: [PATCH v0 linux master] i2c/busses: Avoid i2c interrupt status clear race condition. Message-ID: <20200430141701.GC3355@ninjato> References: <20200429033737.2781-1-ryan_chen@aspeedtech.com> MIME-Version: 1.0 In-Reply-To: <20200429033737.2781-1-ryan_chen@aspeedtech.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200430_071706_582485_D5405CEA X-CRM114-Status: UNSURE ( 7.48 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-aspeed@lists.ozlabs.org, Andrew Jeffery , Benjamin Herrenschmidt , openbmc@lists.ozlabs.org, Brendan Higgins , linux-kernel@vger.kernel.org, Joel Stanley , linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org Content-Type: multipart/mixed; boundary="===============0300273201972299178==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============0300273201972299178== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="1SQmhf2mF2YjsYvc" Content-Disposition: inline --1SQmhf2mF2YjsYvc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 29, 2020 at 11:37:37AM +0800, ryan_chen wrote: > In AST2600 there have a slow peripheral bus between CPU > and i2c controller. > Therefore GIC i2c interrupt status clear have delay timing, > when CPU issue write clear i2c controller interrupt status. > To avoid this issue, the driver need have read after write > clear at i2c ISR. >=20 > Signed-off-by: ryan_chen Applied to for-current with a Fixes tag, thanks! Please, try to add one next time and please also check how the subsystem formats the $subject line. --1SQmhf2mF2YjsYvc Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl6q3d0ACgkQFA3kzBSg KbaoUQ//QVc//2TXd44pz2LgsMx+qUkEgZNrrJKgAGlXr1KGtLR1Km4XWzGzEutz cQCYsZtGWucGPt93oJeSXYx9FWagTYPrR47XbX0U5gCQyVY7XtQc4Wj9LXFOgfi4 c/QQVEAtO38HiNGcWumxxc8Td57nbEuvDfMQltBqsuNXeo4BDLl39xvbzFIWHVDE 9D4Re0pWNf4Y4sYFB4kR8hHdaQkYfki1jE0j99sXskuC6pMcVzSMKUIzrISs4BAe LUCDcrSFokr1W0eqBT6uFvHk4SErXjY0OH+jWxugBXgVliAvSER22FBg2kwqvHC3 fH9CGDi7Ns3RdOoW7d9bTLiHgeaRLBbmTUyuzzKOgXrBJqBnT0AucMfa+X6Is7vC DS4ojD5tVuP3cMQb+sqVxufPIDPVGRXd7Ee2upMtkNNrd9U6W1cun8jPto6hg5Zu G/llTNEsGQaYXrSNXJ6mO3p8BL2EhhvSyaOCItGWKvzGudpNCIR47bMiobK1mZwM F/tkz9xTiXnNipwRMmoQwcon/XoDdVcMs6VoVRIdKk0llGks5kfuZA+zTqc2Kv+h UvuYl+dTFHH9QEbVN/guogoINdM+Fn0+NMaZWcg7D09tUxRFbbRB/eoyD5q8ms7n O/NsT911s4Uw1axbcH/+iF4Ys1dnQlRuDglr/xiqogiibdbkfTY= =f9co -----END PGP SIGNATURE----- --1SQmhf2mF2YjsYvc-- --===============0300273201972299178== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0300273201972299178==--