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Commit c5411382 authored by Jacob Pan's avatar Jacob Pan Committed by H. Peter Anvin
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x86, pci: Add sanity check for PCI fixed bar probing 



While probing for the PCI fixed BAR capability in the extended PCI
configuration space we need to make sure raw_pci_ext_ops is
actually initialized.

Signed-off-by: default avatarJacob Pan <jacob.jun.pan@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F0755A321E8F7@orsmsx508.amr.corp.intel.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent 9eeeb09e

arch/x86/pci/mrst.c

+4 −0
Original line number Diff line number Diff line
@@ -57,6 +57,10 @@ static int fixed_bar_cap(struct pci_bus *bus, unsigned int devfn) 
	u32 pcie_cap = 0, cap_data;



	pos = PCIE_CAP_OFFSET;



	if (!raw_pci_ext_ops)

		return 0;



	while (pos) {

		if (raw_pci_ext_ops->read(pci_domain_nr(bus), bus->number,

					  devfn, pos, 4, &pcie_cap))