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=-5.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, USER_AGENT_MUTT 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 10BC2C169C4 for ; Fri, 8 Feb 2019 17:00:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D2C2720855 for ; Fri, 8 Feb 2019 17:00:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="HPe8AyBl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727534AbfBHRAG (ORCPT ); Fri, 8 Feb 2019 12:00:06 -0500 Received: from vps0.lunn.ch ([185.16.172.187]:44198 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726522AbfBHRAF (ORCPT ); Fri, 8 Feb 2019 12:00:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=4o0xSUNUq51GNelN0go2QOdvaapvNWxd82lpZTYqDsQ=; b=HPe8AyBlqylXJ2onQbVdTeplJm vdkB5dhrhExPKorERAxQypg6OPo8ka1lkk3R00fwm+oEqz6hd6JFk1YRi3+ht+axhmvI+Or2znADJ 8DfYRDSg9YHTyv/vcLS/r9MRvBXO0vygrutzRxqSi7P13Yw5he0aPLHKHq2jC6LOhv8s=; Received: from andrew by vps0.lunn.ch with local (Exim 4.89) (envelope-from ) id 1gs9VT-0000Xx-98; Fri, 08 Feb 2019 18:00:03 +0100 Date: Fri, 8 Feb 2019 18:00:03 +0100 From: Andrew Lunn To: Federico Vaga Cc: Peter Korsgaard , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/5] i2c:ocores: do not handle IRQ if IF is not set Message-ID: <20190208170003.GB1853@lunn.ch> References: <20190208161201.7860-1-federico.vaga@cern.ch> <20190208161201.7860-3-federico.vaga@cern.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190208161201.7860-3-federico.vaga@cern.ch> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 08, 2019 at 05:11:58PM +0100, Federico Vaga wrote: > If the Interrupt Flag (IF) is not set, we should not handle the IRQ: > - the line can be shared with other devices > - it can be a spurious interrupt > > To avoid reading twice the status register, the ocores_process() function > expects it to be read by the caller. > > Signed-off-by: Federico Vaga > Acked-by: Peter Korsgaard Reviewed-by: Andrew Lunn Andrew