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Message-Id: <20200424130847.328584-3-jiaxun.yang@flygoat.com>
Date: Fri, 24 Apr 2020 21:08:33 +0800
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: linux-pci@...r.kernel.org
Cc: Jiaxun Yang <jiaxun.yang@...goat.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Rob Herring <robh+dt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Huacai Chen <chenhc@...ote.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Andrew Murray <amurray@...goodpenguin.co.uk>,
Paul Burton <paulburton@...nel.org>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mips@...r.kernel.org
Subject: [PATCH v5 2/6] PCI: Don't disable decoding when mmio_always_on is set
Don't disable MEM/IO decoing 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 <jiaxun.yang@...goat.com>
---
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");
--
2.26.0.rc2
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