From patchwork Tue May 12 07:43:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 11542257 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0E55C15E6 for ; Tue, 12 May 2020 07:47:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9AEC206F5 for ; Tue, 12 May 2020 07:47:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=flygoat.com header.i=@flygoat.com header.b="ZbYyrnF3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725987AbgELHrN (ORCPT ); Tue, 12 May 2020 03:47:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725933AbgELHrN (ORCPT ); Tue, 12 May 2020 03:47:13 -0400 Received: from vultr.net.flygoat.com (vultr.net.flygoat.com [IPv6:2001:19f0:6001:3633:5400:2ff:fe8c:553]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E144C061A0C; Tue, 12 May 2020 00:47:13 -0700 (PDT) Received: from localhost.localdomain (unknown [142.147.94.151]) by vultr.net.flygoat.com (Postfix) with ESMTPSA id 4E06F20F0D; Tue, 12 May 2020 07:47:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=flygoat.com; s=vultr; t=1589269631; bh=eJnR5u9wxpZzi1TozIj3O/mYN+6KO3jlz58PZP+YVW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZbYyrnF3hSjwCtirbdGDp0J4DGKLQ7ysSKyPS362UyOEuwQxvwDSoZ84jzBWqT9Gl IDn2YIflZhAldAnNG0RD5p2UOB9XndcAmc5aqLMb4WUP+KDD/vHUZgP09A/53ddyWN gOpdmztyzkrLQtrRlMEvGqbUOmbWiNZC0Ovj8nawL1pK3dVCnx22ubhwRzGnT7s6ch J2zewRI6vCOCd58Vx44bsXIA9D0xZAPxPzzUhaZ+Ctg87aqVPwt4fsl/iDejmOegSS ZBe8RzTnXt5UpYUQpb3JQpfFSlKWhwC3KFscIJgostZeoxOQp2RYJavXngADIX1m2K pjahXVDheWarA== From: Jiaxun Yang To: linux-pci@vger.kernel.org Cc: Jiaxun Yang , Bjorn Helgaas , Bjorn Helgaas , Rob Herring , Thomas Bogendoerfer , Huacai Chen , Lorenzo Pieralisi , Paul Burton , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Subject: [PATCH v9 1/5] PCI: Don't disable decoding when mmio_always_on is set Date: Tue, 12 May 2020 15:43:55 +0800 Message-Id: <20200512074413.3557835-1-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> References: <20200427060551.1372591-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Don't disable MEM/IO decoding when a device have both non_compliant_bars and mmio_always_on. That would allow us quirk devices with junk in BARs but can't disable their decoding. Signed-off-by: Jiaxun Yang Acked-by: Bjorn Helgaas --- drivers/pci/probe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 77b8a145c39b..d9c2c3301a8a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1822,7 +1822,7 @@ int pci_setup_device(struct pci_dev *dev) /* Device class may be changed after fixup */ class = dev->class >> 8; - if (dev->non_compliant_bars) { + if (dev->non_compliant_bars && !dev->mmio_always_on) { pci_read_config_word(dev, PCI_COMMAND, &cmd); if (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) { pci_info(dev, "device has non-compliant BARs; disabling IO/MEM decoding\n");