diff options
| author | Yijing Wang <wangyijing@huawei.com> | 2013-06-06 15:34:49 +0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2013-06-18 09:44:59 -0700 |
| commit | 429ac0995e74b24d83ca058e802faed9a562651b (patch) | |
| tree | d4ae16058f618dffadc6ace16d727549e77952d6 /arch/ia64 | |
| parent | 5cd7595dea8d54d93124cfc4faec103ce56ab03d (diff) | |
| download | linux-429ac0995e74b24d83ca058e802faed9a562651b.tar.gz linux-429ac0995e74b24d83ca058e802faed9a562651b.tar.bz2 linux-429ac0995e74b24d83ca058e802faed9a562651b.zip | |
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')
| -rw-r--r-- | arch/ia64/pci/pci.c | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 82eb8b2a4f1d..6da469a38a49 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: |