On Thu, 2013-03-21 at 13:39 +0900, Yasuaki Ishimatsu wrote:
> acpi_memory_info has enabled bit and failed bit for controlling memory
> hotplug. But we don't need to keep both bits.
>
> The patch removes acpi_memory_info->failed bit.
>
> Signed-off-by: yasuaki ishimatsu <isimatu.yasu...@jp.fujitsu.com>
> ---
>
> v2 : Changed a based kernel from linux-3.9-rc2 to linux-pm.git/bleeding-edge.
>
> ---
> drivers/acpi/acpi_memhotplug.c | 13 +------------
> 1 files changed, 1 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
> index ea78988..597cd65 100644
> --- a/drivers/acpi/acpi_memhotplug.c
> +++ b/drivers/acpi/acpi_memhotplug.c
> @@ -73,7 +73,6 @@ struct acpi_memory_info {
> unsigned short caching; /* memory cache attribute */
> unsigned short write_protect; /* memory read/write attribute */
> unsigned int enabled:1;
> - unsigned int failed:1;
> };
>
> struct acpi_memory_device {
> @@ -201,10 +200,8 @@ static int acpi_memory_enable_device(struct
> acpi_memory_device *mem_device)
> * returns -EEXIST. If add_memory() returns the other error, it
> * means that this memory block is not used by the kernel.
> */
> - if (result && result != -EEXIST) {
> - info->failed = 1;
> + if (result && result != -EEXIST)
> continue;
> - }
>
> info->enabled = 1;
>
> @@ -238,15 +235,7 @@ static int acpi_memory_remove_memory(struct
> acpi_memory_device *mem_device)
> nid = acpi_get_node(mem_device->device->handle);
>
> list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
> - if (info->failed)
> - /* The kernel does not use this memory block */
> - continue;
> -
> if (!info->enabled)
> - /*
> - * The kernel uses this memory block, but it may be not
> - * managed by us.
> - */
> return -EBUSY;
Shouldn't this case (!info->enabled) continue since it is the same as
info->failed before? -EBUSY was previously used for the -EEXIST case,
which is no longer a failure case with this patchset.
Thanks,
-Toshi
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