Bjorn Helgaas ac93ac7403 PCI: Don't check resource_size() in pci_bus_alloc_resource() ... Paul reported that after f75b99d5a7 ("PCI: Enforce bus address limits in resource allocation") on a 32-bit kernel (CONFIG_PHYS_ADDR_T_64BIT not set), intel-gtt complained "can't ioremap flush page - no chipset flushing". In addition, other PCI resource allocations, e.g., for bridge windows, failed. This happens because we incorrectly skip bus resources of [mem 0x00000000-0xffffffff] because we think they are of size zero. When resource_size_t is 32 bits wide, resource_size() on [mem 0x00000000-0xffffffff] returns 0 because (r->end - r->start + 1) overflows. Therefore, we can't use "resource_size() == 0" to decide that allocation from this resource will fail. allocate_resource() should fail anyway if it can't satisfy the address constraints, so we should just depend on that. A [mem 0x00000000-0xffffffff] bus resource is obviously not really valid, but we do fall back to it as a default when we don't have information about host bridge apertures. Link: https://bugzilla.kernel.org/show_bug.cgi?id=71611 Fixes: f75b99d5a7 PCI: Enforce bus address limits in resource allocation Reported-and-tested-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>		2014-03-12 11:19:20 -06:00
..
host	PCI: mvebu: Use Device ID and revision from underlying endpoint	2014-02-12 14:05:54 -07:00
hotplug	ACPI / hotplug / PCI: Relax the checking of _STA return values	2014-02-12 12:45:57 +01:00
pcie
access.c
ats.c
bus.c	PCI: Don't check resource_size() in pci_bus_alloc_resource()	2014-03-12 11:19:20 -06:00
host-bridge.c
hotplug-pci.c
htirq.c
ioapic.c	ACPI and power management updates for 3.14-rc1	2014-01-24 15:51:02 -08:00
iov.c
irq.c
Kconfig
Makefile
msi.c	PCI/MSI: Fix pci_msix_vec_count() htmldocs failure	2014-02-13 10:47:44 -07:00
of.c
pci-acpi.c	ACPI and power management updates for 3.14-rc1	2014-01-24 15:51:02 -08:00
pci-driver.c
pci-label.c	ACPI and power management updates for 3.14-rc1	2014-01-24 15:51:02 -08:00
pci-stub.c
pci-sysfs.c	PCI: Add global pci_lock_rescan_remove()	2014-01-13 17:49:49 -07:00
pci.c	PCI: Enable INTx in pci_reenable_device() only when MSI/MSI-X not enabled	2014-03-12 11:19:18 -06:00
pci.h
probe.c	Revert "PCI: Remove from bus_list and release resources in pci_release_dev()"	2014-02-01 10:24:31 -08:00
proc.c
quirks.c	PCI changes for the v3.14 merge window:	2014-01-22 16:39:28 -08:00
remove.c	Revert "PCI: Remove from bus_list and release resources in pci_release_dev()"	2014-02-01 10:24:31 -08:00
rom.c
search.c
setup-bus.c
setup-irq.c
setup-res.c
slot.c
syscall.c
vc.c
vpd.c
xen-pcifront.c	Features:	2014-01-22 22:00:18 -08:00