mmc: atmel-mci: Keep timer enabled when queuing a next request

When atmci_request_end() is about to finish a request for one slot, there
is a possibility that there is new request queued for another slot. If this
turns out to be the case, the new request is started and the timer is
re-programmed for it.

Although, a few lines below in atmci_request_end(), this timer becomes
deleted, likely corresponding to the other recently completed request. This
looks wrong, so let's fix it.

Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Link: https://lore.kernel.org/r/20200414161413.3036-2-ulf.hansson@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index aeaaa53..0472df8 100644 (file)
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1557,6 +1557,8 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
 
        WARN_ON(host->cmd || host->data);
 
+       del_timer(&host->timer);
+
        /*
         * Update the MMC clock rate if necessary. This may be
         * necessary if set_ios() is called when a different slot is
@@ -1583,8 +1585,6 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
                host->state = STATE_IDLE;
        }
 
-       del_timer(&host->timer);
-
        spin_unlock(&host->lock);
        mmc_request_done(prev_mmc, mrq);
        spin_lock(&host->lock);