From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149AbbA1UPw (ORCPT ); Wed, 28 Jan 2015 15:15:52 -0500 Received: from gate.crashing.org ([63.228.1.57]:48005 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755079AbbA1UPt (ORCPT ); Wed, 28 Jan 2015 15:15:49 -0500 Date: Wed, 28 Jan 2015 14:15:33 -0600 From: Segher Boessenkool To: Scott Wood Cc: Bogdan Purcareata , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] powerpc/mpic: Add DT option to skip readback after EOI Message-ID: <20150128201533.GA10436@gate.crashing.org> References: <1422371952-1126-1-git-send-email-bogdan.purcareata@freescale.com> <1422395873.10544.61.camel@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1422395873.10544.61.camel@freescale.com> User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 27, 2015 at 03:57:53PM -0600, Scott Wood wrote: > At this point, given the previous discussion, does anyone object to > removing the readback entirely? Do we have any evidence that reading > WHOAMI is effective at addressing whatever problem reading EOI made go > away on the relevant platform? What platforms were those? Just test there! If no one remembers, they can not (any longer) be important platforms ;-) Just remove the code, and if in twelve months finally someone reports a failure we will at least know what platform it was. Segher