mmc: sdhci: clean up sdio interrupt enable handling

We don't need to change the SDHCI_SDIO_IRQ_ENABLED flag when we're
merely receiving an interrupt - IRQ handling thread in the MMC core
will either re-enable or disable the interrupt via the enable_sdio_irq
callback, which will update this status appropriately.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 53168e4..4b6cca2 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1711,24 +1711,14 @@ static int sdhci_get_ro(struct mmc_host *mmc)
 
 static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
 {
-       if (host->flags & SDHCI_DEVICE_DEAD)
-               goto out;
-
-       if (enable)
-               host->flags |= SDHCI_SDIO_IRQ_ENABLED;
-       else
-               host->flags &= ~SDHCI_SDIO_IRQ_ENABLED;
-
        /* SDIO IRQ will be enabled as appropriate in runtime resume */
-       if (host->runtime_suspended)
-               goto out;
-
-       if (enable)
-               sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT);
-       else
-               sdhci_mask_irqs(host, SDHCI_INT_CARD_INT);
-out:
-       mmiowb();
+       if (!(host->flags & SDHCI_DEVICE_DEAD) || host->runtime_suspended) {
+               if (enable)
+                       sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT);
+               else
+                       sdhci_mask_irqs(host, SDHCI_INT_CARD_INT);
+               mmiowb();
+       }
 }
 
 static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
@@ -1736,9 +1726,18 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
        struct sdhci_host *host = mmc_priv(mmc);
        unsigned long flags;
 
+       sdhci_runtime_pm_get(host);
+
        spin_lock_irqsave(&host->lock, flags);
+       if (enable)
+               host->flags |= SDHCI_SDIO_IRQ_ENABLED;
+       else
+               host->flags &= ~SDHCI_SDIO_IRQ_ENABLED;
+
        sdhci_enable_sdio_irq_nolock(host, enable);
        spin_unlock_irqrestore(&host->lock, flags);
+
+       sdhci_runtime_pm_put(host);
 }
 
 static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
@@ -2726,7 +2725,7 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
        host->runtime_suspended = false;
 
        /* Enable SDIO IRQ */
-       if ((host->flags & SDHCI_SDIO_IRQ_ENABLED))
+       if (host->flags & SDHCI_SDIO_IRQ_ENABLED)
                sdhci_enable_sdio_irq_nolock(host, true);
 
        /* Enable Card Detection */