From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mackerras Subject: Re: [Bulk] Re: [PATCH 1/2] [PCI] Check that MWI bit really did get set Date: Mon, 16 Oct 2006 10:00:25 +1000 Message-ID: <17714.52121.962807.781244@cargo.ozlabs.ibm.com> References: <1160161519800-git-send-email-matthew@wil.cx> <20061013214135.8fbc9f04.akpm@osdl.org> <20061014140249.GL11633@parisc-linux.org> <20061014134855.b66d7e65.akpm@osdl.org> <20061015032000.GP11633@parisc-linux.org> <20061015070809.978C714552@adsl-69-226-248-13.dsl.pltn13.pacbell.net> <1160922082.5732.51.camel@localhost.localdomain> <20061015135756.GD22289@parisc-linux.org> <20061015104544.5de31608.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Matthew Wilcox , Alan Cox , David Brownell , val_henson@linux.intel.com, netdev@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org, gregkh@suse.de Return-path: Received: from ozlabs.org ([203.10.76.45]:36481 "EHLO ozlabs.org") by vger.kernel.org with ESMTP id S1030301AbWJPAES (ORCPT ); Sun, 15 Oct 2006 20:04:18 -0400 To: Andrew Morton In-Reply-To: <20061015104544.5de31608.akpm@osdl.org> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Andrew Morton writes: > If the drivers doesn't care and if it makes no difference to performance > then just delete the call to pci_set_mwi(). > > But if MWI _does_ make a difference to performance then we should tell > someone that it isn't working rather than silently misbehaving? That sounds like we need a printk inside pci_set_mwi then, rather than adding a printk to every single caller. Paul.