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authorJiaxun Yang <jiaxun.yang@flygoat.com>2020-05-26 17:21:12 +0800
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-05-27 12:51:03 +0200
commitb6caa1d8c80cb71b6162cb1f1ec13aa655026c9f (patch)
tree64aaa37815fc92c2ee9e7804942c6b1d2cdfba26
parentMIPS: BCM63xx: fix 6328 boot selection bit (diff)
downloadwireguard-linux-b6caa1d8c80cb71b6162cb1f1ec13aa655026c9f.tar.xz
wireguard-linux-b6caa1d8c80cb71b6162cb1f1ec13aa655026c9f.zip
PCI: Don't disable decoding when mmio_always_on is set
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>
-rw-r--r--drivers/pci/probe.c2
1 files changed, 1 insertions, 1 deletions
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");