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authorYijing Wang <wangyijing@huawei.com>2013-06-06 15:34:49 +0800
committerTony Luck <tony.luck@intel.com>2013-06-18 09:44:59 -0700
commit429ac0995e74b24d83ca058e802faed9a562651b (patch)
treed4ae16058f618dffadc6ace16d727549e77952d6 /arch/ia64/pci/pci.c
parent5cd7595dea8d54d93124cfc4faec103ce56ab03d (diff)
PCI/IA64: Allocate pci_root_info instead of using stack
We need to pass around info for release function. Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-ia64@vger.kernel.org Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/pci/pci.c')
-rw-r--r--arch/ia64/pci/pci.c58
1 files changed, 35 insertions, 23 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 82eb8b2a4f1..6da469a38a4 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -331,7 +331,8 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
int domain = root->segment;
int bus = root->secondary.start;
struct pci_controller *controller;
- struct pci_root_info info;
+ struct pci_root_info *info = NULL;
+ int busnum = root->secondary.start;
struct pci_bus *pbus;
char *name;
int pxm;
@@ -348,35 +349,43 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
controller->node = pxm_to_node(pxm);
#endif
- INIT_LIST_HEAD(&info.resources);
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ printk(KERN_WARNING
+ "pci_bus %04x:%02x: ignored (out of memory)\n",
+ root->segment, busnum);
+ goto out2;
+ }
+
+ INIT_LIST_HEAD(&info->resources);
/* insert busn resource at first */
- pci_add_resource(&info.resources, &root->secondary);
+ pci_add_resource(&info->resources, &root->secondary);
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
- &info.res_num);
- if (info.res_num) {
- info.res =
- kzalloc_node(sizeof(*info.res) * info.res_num,
+ &info->res_num);
+ if (info->res_num) {
+ info->res =
+ kzalloc_node(sizeof(*info->res) * info->res_num,
GFP_KERNEL, controller->node);
- if (!info.res)
- goto out2;
+ if (!info->res)
+ goto out3;
- info.res_offset =
- kzalloc_node(sizeof(*info.res_offset) * info.res_num,
+ info->res_offset =
+ kzalloc_node(sizeof(*info->res_offset) * info->res_num,
GFP_KERNEL, controller->node);
- if (!info.res_offset)
- goto out3;
+ if (!info->res_offset)
+ goto out4;
name = kmalloc(16, GFP_KERNEL);
if (!name)
- goto out4;
+ goto out5;
sprintf(name, "PCI Bus %04x:%02x", domain, bus);
- info.bridge = device;
- info.controller = controller;
- info.name = name;
- info.res_num = 0;
+ info->bridge = device;
+ info->controller = controller;
+ info->name = name;
+ info->res_num = 0;
acpi_walk_resources(device->handle, METHOD_NAME__CRS,
- add_window, &info);
+ add_window, info);
}
/*
* See arch/x86/pci/acpi.c.
@@ -385,18 +394,21 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
* such quirk. So we just ignore the case now.
*/
pbus = pci_create_root_bus(NULL, bus, &pci_root_ops, controller,
- &info.resources);
+ &info->resources);
if (!pbus) {
- pci_free_resource_list(&info.resources);
+ pci_free_resource_list(&info->resources);
return NULL;
}
pci_scan_child_bus(pbus);
return pbus;
+
+out5:
+ kfree(info->res_offset);
out4:
- kfree(info.res_offset);
+ kfree(info->res);
out3:
- kfree(info.res);
+ kfree(info);
out2:
kfree(controller);
out1: