linux-kernel - Re: [PATCH V2 05/27] mmc: mmci: move mmci next cookie to mci host

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Date:   Tue, 25 Sep 2018 09:08:11 +0200
From:   Ludovic BARRE <ludovic.barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Gerald Baeza <gerald.baeza@...com>,
        Loic Pallardy <loic.pallardy@...com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: Re: [PATCH V2 05/27] mmc: mmci: move mmci next cookie to mci host



On 09/24/2018 08:46 PM, Ulf Hansson wrote:
> On 21 September 2018 at 11:45, Ludovic Barre <ludovic.Barre@...com> wrote:
>> From: Ludovic Barre <ludovic.barre@...com>
>>
>> This patch moves next cookie to mmci host structure to
>> share same cookie management between all variants.
> 
> I would suggest you to squash this with patch4, as I think it makes
> more sense to keep these changes together.

ok

> 
>>
>> Signed-off-by: Ludovic Barre <ludovic.barre@...com>
>> ---
>>   drivers/mmc/host/mmci.c | 10 ++++------
>>   drivers/mmc/host/mmci.h |  2 ++
>>   2 files changed, 6 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
>> index 6de7c8d..43f2a1a 100644
>> --- a/drivers/mmc/host/mmci.c
>> +++ b/drivers/mmc/host/mmci.c
>> @@ -418,7 +418,6 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
>>   struct mmci_dmae_next {
>>          struct dma_async_tx_descriptor *desc;
>>          struct dma_chan *chan;
>> -       s32 cookie;
>>   };
>>
>>   struct mmci_dmae_priv {
>> @@ -449,7 +448,7 @@ static int mmci_dma_setup(struct mmci_host *host)
>>                                                       "tx");
>>
>>          /* initialize pre request cookie */
>> -       dmae->next_data.cookie = 1;
>> +       host->next_cookie = 1;
>>
>>          /*
>>           * If only an RX channel is specified, the driver will
>> @@ -716,7 +715,7 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
>>          struct mmci_dmae_priv *dmae = host->dma_priv;
>>          struct mmci_dmae_next *next = &dmae->next_data;
>>
>> -       WARN_ON(data->host_cookie && data->host_cookie != next->cookie);
>> +       WARN_ON(data->host_cookie && data->host_cookie != host->next_cookie);
>>          WARN_ON(!data->host_cookie && (next->desc || next->chan));
>>
>>          dmae->desc_current = next->desc;
>> @@ -728,9 +727,7 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data)
>>   static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
>>   {
>>          struct mmci_host *host = mmc_priv(mmc);
>> -       struct mmci_dmae_priv *dmae = host->dma_priv;
>>          struct mmc_data *data = mrq->data;
>> -       struct mmci_dmae_next *nd = &dmae->next_data;
>>
>>          if (!data)
>>                  return;
>> @@ -741,7 +738,8 @@ static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
>>                  return;
>>
>>          if (!mmci_dma_prep_next(host, data))
>> -               data->host_cookie = ++nd->cookie < 0 ? 1 : nd->cookie;
>> +               data->host_cookie = ++host->next_cookie < 0 ?
>> +                       1 : host->next_cookie;
>>   }
>>
>>   static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq,
>> diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
>> index 1e9a45b..5bb1ce2 100644
>> --- a/drivers/mmc/host/mmci.h
>> +++ b/drivers/mmc/host/mmci.h
>> @@ -318,5 +318,7 @@ struct mmci_host {
>>          int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
>>
>>          void                    *dma_priv;
>> +
>> +       s32                     next_cookie;
>>   };
>>
>> --
>> 2.7.4
>>
> 
> Kind regards
> Uffe
>