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Date: Fri, 19 Jun 2020 16:32:23 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>, Bjorn Helgaas <helgaas@...nel.org>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.7 225/376] PCI: Dont disable decoding when mmio_always_on is set From: Jiaxun Yang <jiaxun.yang@...goat.com> [ Upstream commit b6caa1d8c80cb71b6162cb1f1ec13aa655026c9f ] 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 <jiaxun.yang@...goat.com> Acked-by: Bjorn Helgaas <helgaas@...nel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- 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"); -- 2.25.1
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