PCI: Fail pci_ioremap_bar() on unassigned resources
authorBjorn Helgaas <bhelgaas@google.com>
Thu, 12 Mar 2015 17:30:15 +0000 (12:30 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Thu, 12 Mar 2015 23:52:34 +0000 (18:52 -0500)
commit646c0282df04265f77ebd5ad3beae671e59acd5b
treea9cc33cb699729115eec9f1c99f9d3662a111941
parent1f7bf3bfb5d60c87dcaa708fd9eabbec93f15830
PCI: Fail pci_ioremap_bar() on unassigned resources

Make pci_ioremap_bar() fail if we're trying to map a BAR that hasn't been
assigned.

Normally pci_enable_device() will fail if a BAR hasn't been assigned, but a
driver can successfully call pci_enable_device_io() even if a memory BAR
hasn't been assigned.  That driver should not be able to use
pci_ioremap_bar() to map that unassigned memory BAR.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/pci/pci.c