On 11/16/2016 06:16 PM, Shawn Lin wrote:
> 在 2016/11/15 18:12, Jaehoon Chung 写道:
>> stop_cmdr should be set to values relevant to stop command.
>> It migth be assigned to values whatever there is mrq->stop or not.
>> Then it doesn't need to use dw_mci_prepare_command().
>> It's enough to use the prep_stop_abort for preparing stop command.
>>
>
> Have you considered to clean up the logic of preparing abort cmd
> within dw_mci_prepare_command?
I have considered this..but i didn't check fully for this logic.
I think it's possible to clean and make more simpler than now.
how about thinking more after applying these patch-set? :)
Best Regards,
Jaehoon Chung
>
>
> if (cmd->opcode == MMC_STOP_TRANSMISSION ||
> cmd->opcode == MMC_GO_IDLE_STATE ||
> cmd->opcode == MMC_GO_INACTIVE_STATE ||
> (cmd->opcode == SD_IO_RW_DIRECT &&
> ((cmd->arg >> 9) & 0x1FFFF) == SDIO_CCCR_ABORT))
> cmdr |= SDMMC_CMD_STOP;
>
>
>> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
>> Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
>> ---
>> drivers/mmc/host/dw_mmc.c | 15 +++++----------
>> 1 file changed, 5 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index 3cda68c..12e1107 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -385,7 +385,7 @@ static void dw_mci_start_command(struct dw_mci *host,
>>
>> static inline void send_stop_abort(struct dw_mci *host, struct mmc_data *data)
>> {
>> - struct mmc_command *stop = data->stop ? data->stop : &host->stop_abort;
>> + struct mmc_command *stop = &host->stop_abort;
>>
>> dw_mci_start_command(host, stop, host->stop_cmdr);
>> }
>> @@ -1277,10 +1277,7 @@ static void __dw_mci_start_request(struct dw_mci *host,
>> spin_unlock_irqrestore(&host->irq_lock, irqflags);
>> }
>>
>> - if (mrq->stop)
>> - host->stop_cmdr = dw_mci_prepare_command(slot->mmc, mrq->stop);
>> - else
>> - host->stop_cmdr = dw_mci_prep_stop_abort(host, cmd);
>> + host->stop_cmdr = dw_mci_prep_stop_abort(host, cmd);
>> }
>>
>> static void dw_mci_start_request(struct dw_mci *host,
>> @@ -1890,8 +1887,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
>> if (test_and_clear_bit(EVENT_DATA_ERROR,
>> &host->pending_events)) {
>> dw_mci_stop_dma(host);
>> - if (data->stop ||
>> - !(host->data_status & (SDMMC_INT_DRTO |
>> + if (!(host->data_status & (SDMMC_INT_DRTO |
>> SDMMC_INT_EBE)))
>> send_stop_abort(host, data);
>> state = STATE_DATA_ERROR;
>> @@ -1927,8 +1923,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
>> if (test_and_clear_bit(EVENT_DATA_ERROR,
>> &host->pending_events)) {
>> dw_mci_stop_dma(host);
>> - if (data->stop ||
>> - !(host->data_status & (SDMMC_INT_DRTO |
>> + if (!(host->data_status & (SDMMC_INT_DRTO |
>> SDMMC_INT_EBE)))
>> send_stop_abort(host, data);
>> state = STATE_DATA_ERROR;
>> @@ -2004,7 +1999,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
>> host->cmd = NULL;
>> host->data = NULL;
>>
>> - if (mrq->stop)
>> + if (!mrq->sbc && mrq->stop)
>> dw_mci_command_complete(host, mrq->stop);
>> else
>> host->cmd_status = 0;
>>
>
>
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