PCI: Check IORESOURCE_UNSET before updating BAR

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Check to make sure we don't update a BAR with an address we haven't
assigned.

If we haven't assigned an address to a resource, we shouldn't write it to a
BAR.  This isn't a problem for the usual path via pci_assign_resource(),
which clears IORESOURCE_UNSET before calling pci_update_resource(), but
paths like pci_restore_bars() can call this for resources we haven't
assigned.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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This commit is contained in:

Bjorn Helgaas 2014-02-26 11:25:59 -07:00

parent 434aafc1ae

commit cd8a4d3657

1 changed files with 3 additions and 0 deletions

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drivers/pci/setup-res.c

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