Hi,
On Wed, May 17, 2017 at 4:47 PM, Yoshihiro Shimoda
<yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
>>
>> drivers/mmc/host/tmio_mmc_pio.c | 7 ++++---
>> 1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
>> index 7ef24ec620b542..526e52719f81b9 100644
>> --- a/drivers/mmc/host/tmio_mmc_pio.c
>> +++ b/drivers/mmc/host/tmio_mmc_pio.c
>> @@ -140,12 +140,10 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
>>
>> host->sdio_irq_mask = TMIO_SDIO_MASK_ALL &
>> ~TMIO_SDIO_STAT_IOIRQ;
>> - sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001);
>> sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
>> } else if (!enable && host->sdio_irq_enabled) {
>> host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
>> sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
>> - sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000);
>>
>> host->sdio_irq_enabled = false;
>> pm_runtime_mark_last_busy(mmc_dev(mmc));
>> @@ -1203,7 +1201,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
>> if (pdata->flags & TMIO_MMC_SDIO_IRQ) {
>> _host->sdio_irq_mask = TMIO_SDIO_MASK_ALL;
>> sd_ctrl_write16(_host, CTL_SDIO_IRQ_MASK, _host->sdio_irq_mask);
>> - sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0000);
>> + sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0001);
>> }
>
> I'm afraid but I would like to confirm about this 6 month ago's patch :)
>
> This patch enables CTL_TRANSACTION_CTL to 0x0001 in tmio_mmc_host_probe().
> But, I have a concern we have to disable/enable the register in suspend/resume()
> because registers setting is possible to be cleared after resume.
> What do you think?
That's a good catch.
I suppose we need that. I didn't check it for suspend/resume at
thattime. My bad.
Thanks,
--
yashi
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