From patchwork Thu Jul 29 21:51:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 1511456 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=eGxF3/2r; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=9rQAG6I7; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4GbQMl0WHCz9snk for ; Fri, 30 Jul 2021 08:35:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234891AbhG2WfQ (ORCPT ); Thu, 29 Jul 2021 18:35:16 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:49160 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233247AbhG2WfE (ORCPT ); Thu, 29 Jul 2021 18:35:04 -0400 Message-ID: <20210729222542.992849326@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1627598099; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=jjGNcCOmrTWZsysH9SrPCPLLXLLNsn5HmBKnKwQMdV0=; b=eGxF3/2rYX/oxGIsP5E1+vdSZLJQVIffwL2BHmA8k9+fdshGxN3kg+EjVyV0QedGGeLQcJ NDiJE2MertOtUmA6shOwfMr4h6tnWwgJbi8ioDdZ8pU75g3FQ04QXp/djLCp5X986PZP1f lzniFm2iIKSJDV1I4QlW+xYdJrrmlHvv2KDLWd9dc3ez9OCvJVrp9OfC+hPihzT7dL78fp RHkz+rGOYdlyOzFgnRL/kaNhnxgV2G+qz3/I4G4TadVI1Eo7e2Y6CaYQJJoffLd0+9FHq3 sbz7cgJk994eINShWlB2Ttk8GNcDDmu5Sus8BC24CIObnM1TFH4xw2WufZ5jcg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1627598099; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=jjGNcCOmrTWZsysH9SrPCPLLXLLNsn5HmBKnKwQMdV0=; b=9rQAG6I7Q7FtxAZayHgKu164PZPVg3RTBmzS/kpfojkkPIEy81kSYSD1I6YvR7Sy3moAWK FWGBWWrJUO17SbDQ== Date: Thu, 29 Jul 2021 23:51:52 +0200 From: Thomas Gleixner To: LKML Cc: Alex Williamson , "Raj, Ashok" , "David S. Miller" , Bjorn Helgaas , linux-pci@vger.kernel.org, Kevin Tian , Marc Zyngier , Ingo Molnar , x86@kernel.org, linux-s390@vger.kernel.org, Niklas Schnelle , Gerald Schaefer , Heiko Carstens , Christian Borntraeger Subject: [patch V2 13/19] PCI/MSI: Simplify msi_verify_entries() References: <20210729215139.889204656@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Thomas Gleixner No point in looping over all entries when 64bit addressing mode is enabled for nothing. Signed-off-by: Thomas Gleixner Reviewed-by: Marc Zyngier Acked-by: Bjorn Helgaas --- drivers/pci/msi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -613,8 +613,11 @@ static int msi_verify_entries(struct pci { struct msi_desc *entry; + if (!dev->no_64bit_msi) + return 0; + for_each_pci_msi_entry(entry, dev) { - if (entry->msg.address_hi && dev->no_64bit_msi) { + if (entry->msg.address_hi) { pci_err(dev, "arch assigned 64-bit MSI address %#x%08x but device only supports 32 bits\n", entry->msg.address_hi, entry->msg.address_lo); return -EIO;