diff options
| author |   KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-08-05 12:15:04 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-06 08:57:49 -0700 |
| commit | 5d2870faaa1fdcec795a6bf4dbbfc3e5d57fd7ab (patch) | |
| tree | 0bed831b70618d33f8f543865fb422887870ed80 /drivers/acpi/acpi_memhotplug.c | |
| parent | [PATCH] memory hotadd fixes: avoid check in acpi (diff) | |
| download | linux-dev-5d2870faaa1fdcec795a6bf4dbbfc3e5d57fd7ab.tar.xz linux-dev-5d2870faaa1fdcec795a6bf4dbbfc3e5d57fd7ab.zip | |
[PATCH] memory hotadd fixes: avoid registering res twice
both of acpi_memory_enable_device() and acpi_memory_add_device() may evaluate
_CRS method.
We should avoid evaluate device's resource twice if we could get it
successfully in past.
Signed-off-by: KAMEZWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Keith Mannthey <kmannth@gmail.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/acpi/acpi_memhotplug.c')
| -rw-r--r-- | drivers/acpi/acpi_memhotplug.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index e9175eaeb1df..b0d4b147b19e 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -129,11 +129,15 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device) struct acpi_memory_info *info, *n; + if (!list_empty(&mem_device->res_list)) + return 0; + status = acpi_walk_resources(mem_device->device->handle, METHOD_NAME__CRS, acpi_memory_get_resource, mem_device); if (ACPI_FAILURE(status)) { list_for_each_entry_safe(info, n, &mem_device->res_list, list) kfree(info); + INIT_LIST_HEAD(&mem_device->res_list); return -EINVAL; } |