Hi Srivatsa,
2012/07/12 21:32, Srivatsa S. Bhat wrote:
> On 07/12/2012 04:52 PM, Yasuaki Ishimatsu wrote:
>> Even if cpu_down() fails, acpi_processor_remove() continues to remove the cpu.
>> But in this case, it should return error number since some process may run on
>> the cpu. If the cpu has a running process and the cpu is turned the power off,
>> the system may not work well.
>>
>> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
>>
>
> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Thank you for reviewing.
Thanks,
Yasuaki Ishimatsu
> Regards,
> Srivatsa S. Bhat
>
>> ---
>> drivers/acpi/processor_driver.c | 18 ++++++++++++------
>> 1 file changed, 12 insertions(+), 6 deletions(-)
>>
>> Index: linux-3.5-rc4/drivers/acpi/processor_driver.c
>> ===================================================================
>> --- linux-3.5-rc4.orig/drivers/acpi/processor_driver.c 2012-06-25 04:53:04.000000000 +0900
>> +++ linux-3.5-rc4/drivers/acpi/processor_driver.c 2012-07-05 21:02:58.711285382 +0900
>> @@ -610,7 +610,7 @@ err_free_pr:
>> static int acpi_processor_remove(struct acpi_device *device, int type)
>> {
>> struct acpi_processor *pr = NULL;
>> -
>> + int ret;
>>
>> if (!device || !acpi_driver_data(device))
>> return -EINVAL;
>> @@ -621,8 +621,9 @@ static int acpi_processor_remove(struct
>> goto free;
>>
>> if (type == ACPI_BUS_REMOVAL_EJECT) {
>> - if (acpi_processor_handle_eject(pr))
>> - return -EINVAL;
>> + ret = acpi_processor_handle_eject(pr);
>> + if (ret)
>> + return ret;
>> }
>>
>> acpi_processor_power_exit(pr, device);
>> @@ -841,12 +842,17 @@ static acpi_status acpi_processor_hotadd
>>
>> static int acpi_processor_handle_eject(struct acpi_processor *pr)
>> {
>> - if (cpu_online(pr->id))
>> - cpu_down(pr->id);
>> + int ret;
>> +
>> + if (cpu_online(pr->id)) {
>> + ret = cpu_down(pr->id);
>> + if (ret)
>> + return ret;
>> + }
>>
>> arch_unregister_cpu(pr->id);
>> acpi_unmap_lsapic(pr->id);
>> - return (0);
>> + return ret;
>> }
>> #else
>> static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
>>
>
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