Commit a66aa704 authored by Kenji Kaneshige's avatar Kenji Kaneshige Committed by Tony Luck

[IA64] fix kmalloc(0) in arch/ia64/pci/pci.c

Hiroyuki Kamezawa reported the problem that pci_acpi_scan_root() of
ia64 might call kmalloc_node() with zero size.

Currently ia64's pci_acpi_scan_root() assumes that _CRS method of root
bridge has at least one resource window. But, the root bridges that
has no resource window must be taken into account.
Signed-off-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 6ae38488
...@@ -354,10 +354,13 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus) ...@@ -354,10 +354,13 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window, acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
&windows); &windows);
controller->window = kmalloc_node(sizeof(*controller->window) * windows, if (windows) {
GFP_KERNEL, controller->node); controller->window =
if (!controller->window) kmalloc_node(sizeof(*controller->window) * windows,
goto out2; GFP_KERNEL, controller->node);
if (!controller->window)
goto out2;
}
name = kmalloc(16, GFP_KERNEL); name = kmalloc(16, GFP_KERNEL);
if (!name) if (!name)
......
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