diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-25 13:55:41 +0200 |
|---|---|---|
| committer | Chris Ball <chris@printf.net> | 2014-05-22 13:26:24 +0200 |
| commit | ef104333a234f66cd13fd16632086a21b90fced6 (patch) | |
| tree | 161ed932c8c05e710d9139339470fb6d99b3c95e /drivers | |
| parent | mmc: sdhci: clean up interrupt handling (diff) | |
| download | linux-ef104333a234f66cd13fd16632086a21b90fced6.tar.xz linux-ef104333a234f66cd13fd16632086a21b90fced6.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 53168e4721a6..4b6cca2130bc 100644 --- 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 */ |