Commit b6caa1d8 authored May 26, 2020 by Jiaxun Yang Committed by Thomas Bogendoerfer May 27, 2020

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>

parent 2038e041

drivers/pci/probe.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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");