From a66aa704d6f332b001dfb0e787c92b2c61c75081 Mon Sep 17 00:00:00 2001 From: Kenji Kaneshige Date: Tue, 22 May 2007 10:20:36 -0700 Subject: [PATCH] [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: Kenji Kaneshige Signed-off-by: Andrew Morton Signed-off-by: Tony Luck --- arch/ia64/pci/pci.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 3549f3b4259..73696b4a2ee 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -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, &windows); - controller->window = kmalloc_node(sizeof(*controller->window) * windows, - GFP_KERNEL, controller->node); - if (!controller->window) - goto out2; + if (windows) { + controller->window = + kmalloc_node(sizeof(*controller->window) * windows, + GFP_KERNEL, controller->node); + if (!controller->window) + goto out2; + } name = kmalloc(16, GFP_KERNEL); if (!name) -- 2.41.0