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SubjectRe: [PATCH 4/4] mmc: host: sdhci: Add virtual command queue support
Hi Adrian,

On Mon, 9 Sep 2019 at 20:04, Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> On 6/09/19 6:52 AM, Baolin Wang wrote:
> > Add cqhci_virt_finalize_request() to help to complete a request
> > from virtual command queue.
> >
> > Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
> > ---
> > drivers/mmc/host/sdhci.c | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> > index 4e9ebc8..fb5983e 100644
> > --- a/drivers/mmc/host/sdhci.c
> > +++ b/drivers/mmc/host/sdhci.c
> > @@ -32,6 +32,7 @@
> > #include <linux/mmc/slot-gpio.h>
> >
> > #include "sdhci.h"
> > +#include "cqhci.h"
> >
> > #define DRIVER_NAME "sdhci"
> >
> > @@ -2710,7 +2711,8 @@ static bool sdhci_request_done(struct sdhci_host *host)
> >
> > spin_unlock_irqrestore(&host->lock, flags);
> >
> > - mmc_request_done(host->mmc, mrq);
> > + if (!cqhci_virt_finalize_request(host->mmc, mrq))
> > + mmc_request_done(host->mmc, mrq);
>
> Please add a sdhci_ops callback for request->done then:
>
> if (host->ops->request_done)
> host->ops->request_done(host, mrq);
> else
> mmc_request_done(host->mmc, mrq);

Sure, will do.

>
> >
> > return false;
> > }
> > @@ -3133,7 +3135,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
> >
> > /* Process mrqs ready for immediate completion */
> > for (i = 0; i < SDHCI_MAX_MRQS; i++) {
> > - if (mrqs_done[i])
> > + if (mrqs_done[i] &&
> > + !cqhci_virt_finalize_request(host->mmc, mrqs_done[i]))
>
> sdhci does not support calling mmc->ops->request in interrupt context.
> So probably, you should avoid immediate completion.

Yes, I missed this, will remove. Thanks.

--
Baolin Wang
Best Regards

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