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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-05-26 17:21:12 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 10:24:18 +0200 |
| commit | 97aad0ad757b65300870b2ac7974fb761445ff44 (patch) | |
| tree | 08acb9218b074d488165414e0ab15c34aba5cc01 | |
| parent | 9c8ca9eeeedac951e41f0e6ed2174a95ba141430 (diff) | |
| download | linux-stable-97aad0ad757b65300870b2ac7974fb761445ff44.tar.gz linux-stable-97aad0ad757b65300870b2ac7974fb761445ff44.tar.bz2 linux-stable-97aad0ad757b65300870b2ac7974fb761445ff44.zip | |
PCI: Don't disable decoding when mmio_always_on is set
[ 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@flygoat.com>
Acked-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/pci/probe.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 16611cf3aba4..be63f008167b 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1251,7 +1251,7 @@ 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)) { dev_info(&dev->dev, "device has non-compliant BARs; disabling IO/MEM decoding\n"); |