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

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Message-ID: <47ed1861-1bdb-7caf-3d6b-5304235c7e10@codeaurora.org>
Date:   Wed, 13 Sep 2017 08:40:43 -0600
From:   "Baicar, Tyler" <tbaicar@...eaurora.org>
To:     rjw@...ysocki.net
Cc:     Borislav Petkov <bp@...en8.de>, lenb@...nel.org,
        will.deacon@....com, james.morse@....com, bp@...e.de,
        shiju.jose@...wei.com, geliangtang@...il.com,
        andriy.shevchenko@...ux.intel.com, tony.luck@...el.com,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3] acpi: apei: clear error status before acknowledging
 the error

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@...eaurora.org>
>> ---
>>   drivers/acpi/apei/ghes.c | 16 +++++++++-------
>>   1 file changed, 9 insertions(+), 7 deletions(-)
> Reviewed-by: Borislav Petkov <bp@...e.de>
Hello Rafael,

Were you able to apply this patch?

Thanks,
Tyler

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