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mmc: sdhci: clean up sdio interrupt enable handling

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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>
This commit is contained in:
Russell King 2014-04-25 12:55:41 +01:00 committed by Chris Ball
parent 41005003bc
commit ef104333a2
1 changed files with 17 additions and 18 deletions
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35
drivers/mmc/host/sdhci.c
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@ -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 */