linux-kernel - Re: [PATCH] ACPI: CPPC: Support PCC with interrupt flag

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Message-ID: <CAFHUOYx69g7zQwzMQHfBixmbSU3meq0CA3xNz49_kDOPYPrBUQ@mail.gmail.com>
Date:   Wed, 14 Sep 2016 08:45:14 -0700
From:   Hoan Tran <hotran@....com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Prashanth Prakash <pprakash@...eaurora.org>,
        Ashwin Chaugule <ashwin.chaugule@...aro.org>
Cc:     linux acpi <linux-acpi@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>, Loc Ho <lho@....com>,
        Duc Dang <dhdang@....com>, Hoan Tran <hotran@....com>,
        Ashwin Chaugule <ashwinch@...gle.com>
Subject: Re: [PATCH] ACPI: CPPC: Support PCC with interrupt flag

On Tue, Aug 30, 2016 at 11:20 AM, Hoan Tran <hotran@....com> wrote:
> On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@....com> wrote:
>> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
>> function to notify the mailbox framework about TX completion.
>>
>> Signed-off-by: Hoan Tran <hotran@....com>
>> ---
>> This patch is tested on top and depends on patch[1]:
>> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
>>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
>>
>>  drivers/acpi/cppc_acpi.c | 6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> index 2e98173..19606aa 100644
>> --- a/drivers/acpi/cppc_acpi.c
>> +++ b/drivers/acpi/cppc_acpi.c
>> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
>>                         last_cmd_cmpl_time = ktime_get();
>>         }
>>
>> -       mbox_client_txdone(pcc_channel, ret);
>> +       if (pcc_channel->mbox->txdone_irq)
>> +               mbox_chan_txdone(pcc_channel, ret);
>> +       else
>> +               mbox_client_txdone(pcc_channel, ret);
>> +
>>         return ret;
>>  }
>>
>> --
>> 1.9.1
>>
>
> Any feedbacks.
>
> Thanks
> Hoan

Hi Rafael,

Do you have any comments on this patch ?

Thanks
Hoan