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SubjectRe: [PATCH] ACPI / IPMI: change warning to debug on timeout
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On 03/25/2017 09:08 AM, Sinan Kaya wrote:
> On 3/24/2017 10:55 PM, Corey Minyard wrote:
>> Why would a timeout for a message be expected? The BMC should
>> at least respond with an error for an incorrect message.
> Let me add some more context...
>
> In this particular case, the FRU ID that I was trying to access was
> correct.
>
> Platform supports PCIe hotplug. The FRU is embedded into the HW that
> is being removed. That's what I mean by non-existent.
>
> When the device is ejected and a FRU command is executed, BMC times out
> reaching to the FRU on the device.
>
> When the device is inserted, everything works as expected.

I haven't added this yet. Someone who knows more about the ACPI side of
IPMI
should probably comment. So I've added Lv Zheng.

This is ok with me, though. If you remove a management controller, a
timeout is
expected. However, if the management controller is still present, a
timeout is
probably not the best error code, "destination unavailable" is probably
a better
choice.

So:

Acked-by: Corey Minyard <cminyard@mvista.com>

-corey

>
>> -corey
>>
>> On 03/23/2017 10:32 AM, Sinan Kaya wrote:
>>> Getting timeout message from BMC when trying to read from a non-existent
>>> FRU. This is expected but warning is not.
>>>
>>> Let's reduce the warning to debug.
>>>
>>> Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
>>> ---
>>> drivers/acpi/acpi_ipmi.c | 3 +--
>>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/acpi/acpi_ipmi.c b/drivers/acpi/acpi_ipmi.c
>>> index 747c2ba..1b64419 100644
>>> --- a/drivers/acpi/acpi_ipmi.c
>>> +++ b/drivers/acpi/acpi_ipmi.c
>>> @@ -429,8 +429,7 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
>>> if (msg->recv_type == IPMI_RESPONSE_RECV_TYPE &&
>>> msg->msg.data_len == 1) {
>>> if (msg->msg.data[0] == IPMI_TIMEOUT_COMPLETION_CODE) {
>>> - dev_WARN_ONCE(dev, true,
>>> - "Unexpected response (timeout).\n");
>>> + dev_dbg_once(dev, "Unexpected response (timeout).\n");
>>> tx_msg->msg_done = ACPI_IPMI_TIMEOUT;
>>> }
>>> goto out_comp;
>>
>>
>

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