diff mbox series

[v9,1/5] PCI: Don't disable decoding when mmio_always_on is set

Message ID 20200512074413.3557835-1-jiaxun.yang@flygoat.com
State New
Headers show
Series [v9,1/5] PCI: Don't disable decoding when mmio_always_on is set | expand

Commit Message

Jiaxun Yang May 12, 2020, 7:43 a.m. UTC 
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>
---
 drivers/pci/probe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

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");