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PCI: Add informational printk for invalid BARs 

As a consequence of restoring the detection of invalid BARs, add a new
informational printk like the following when such occurrences are
encountered.

  pci ssss:bb:dd.f: [Firmware Bug]: reg 0xXX: invalid BAR (can't size)

Reported-by: William Unruh <unruh@physics.ubc.ca>
Reported-by: Martin Lucina <martin@lucina.net>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Wilcox <willy@linux.intel.com>
This commit is contained in:
Myron Stowe 2014-10-30 11:54:50 -06:00 committed by Bjorn Helgaas
parent f795d86aaa
commit 7e79c5f8ca
1 changed files with 4 additions and 1 deletions
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5
drivers/pci/probe.c
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@ -247,8 +247,11 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
goto fail;
sz64 = pci_size(l64, sz64, mask64);
if (!sz64)
if (!sz64) {
dev_info(&dev->dev, FW_BUG "reg 0x%x: invalid BAR (can't size)\n",
pos);
goto fail;
}
if (res->flags & IORESOURCE_MEM_64) {
if ((sizeof(dma_addr_t) < 8 || sizeof(resource_size_t) < 8) &&