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Re: [PATCH V3] acpi: apei: clear error status before acknowledging the error

Started by"Baicar, Tyler" <tbaicar@codeaurora.org>
First post2017-09-13 16:50 +0200
Last post2017-09-21 17:30 +0200
Articles 2 — 2 participants

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  Re: [PATCH V3] acpi: apei: clear error status before acknowledging  the error "Baicar, Tyler" <tbaicar@codeaurora.org> - 2017-09-13 16:50 +0200
    Re: [PATCH V3] acpi: apei: clear error status before acknowledging  the error Tyler Baicar <tbaicar@codeaurora.org> - 2017-09-21 17:30 +0200

#1731648 — Re: [PATCH V3] acpi: apei: clear error status before acknowledging the error

From"Baicar, Tyler" <tbaicar@codeaurora.org>
Date2017-09-13 16:50 +0200
SubjectRe: [PATCH V3] acpi: apei: clear error status before acknowledging the error
Message-ID<uph9g-aN-13@gated-at.bofh.it>
On 8/29/2017 2:16 AM, Borislav Petkov wrote:
> On Mon, Aug 28, 2017 at 10:53:41AM -0600, Tyler Baicar wrote:
>> Currently we acknowledge errors before clearing the error status.
>> This could cause a new error to be populated by firmware in-between
>> the error acknowledgment and the error status clearing which would
>> cause the second error's status to be cleared without being handled.
>> So, clear the error status before acknowledging the errors.
>>
>> Also, make sure to acknowledge the error if the error status read
>> fails.
>>
>> V3: Seperate check for -ENOENT return value
>>
>> V2: Only send error ack if there was an error populated
>>      Remove curly braces that are no longer needed
>>
>> Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
>> ---
>>   drivers/acpi/apei/ghes.c | 16 +++++++++-------
>>   1 file changed, 9 insertions(+), 7 deletions(-)
> Reviewed-by: Borislav Petkov <bp@suse.de>
Hello Rafael,

Were you able to apply this patch?

Thanks,
Tyler

-- 
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

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#1736774

FromTyler Baicar <tbaicar@codeaurora.org>
Date2017-09-21 17:30 +0200
Message-ID<usbAm-2Ne-15@gated-at.bofh.it>
In reply to#1731648
On 9/13/2017 8:40 AM, Baicar, Tyler wrote:
> On 8/29/2017 2:16 AM, Borislav Petkov wrote:
>> On Mon, Aug 28, 2017 at 10:53:41AM -0600, Tyler Baicar wrote:
>>> Currently we acknowledge errors before clearing the error status.
>>> This could cause a new error to be populated by firmware in-between
>>> the error acknowledgment and the error status clearing which would
>>> cause the second error's status to be cleared without being handled.
>>> So, clear the error status before acknowledging the errors.
>>>
>>> Also, make sure to acknowledge the error if the error status read
>>> fails.
>>>
>>> V3: Seperate check for -ENOENT return value
>>>
>>> V2: Only send error ack if there was an error populated
>>>      Remove curly braces that are no longer needed
>>>
>>> Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
>>> ---
>>>   drivers/acpi/apei/ghes.c | 16 +++++++++-------
>>>   1 file changed, 9 insertions(+), 7 deletions(-)
>> Reviewed-by: Borislav Petkov <bp@suse.de>
> Hello Rafael,
>
> Were you able to apply this patch?
I haven't heard anything on this patch. It would be great to have it in 
4.14 :)

Thanks,
Tyler

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