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mmc: mmci: Mask IRQs for all variants during runtime suspend 

In runtime suspended state, we are not expecting IRQs and thus we can
safely mask them, not only for pwrreg_nopower variants but for all.

Obviously we then also need to make sure we restore the IRQ mask while
becoming runtime resumed.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ulf Hansson 2014-01-23 00:19:38 +01:00
parent 89ca3b8819
commit 42dcc89a91
1 changed files with 11 additions and 12 deletions
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23
drivers/mmc/host/mmci.c
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@ -1794,35 +1794,34 @@ static void mmci_save(struct mmci_host *host)
{
unsigned long flags;
if (host->variant->pwrreg_nopower) {
spin_lock_irqsave(&host->lock, flags);
spin_lock_irqsave(&host->lock, flags);
writel(0, host->base + MMCIMASK0);
writel(0, host->base + MMCIMASK0);
if (host->variant->pwrreg_nopower) {
writel(0, host->base + MMCIDATACTRL);
writel(0, host->base + MMCIPOWER);
writel(0, host->base + MMCICLOCK);
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
}
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
}
static void mmci_restore(struct mmci_host *host)
{
unsigned long flags;
if (host->variant->pwrreg_nopower) {
spin_lock_irqsave(&host->lock, flags);
spin_lock_irqsave(&host->lock, flags);
if (host->variant->pwrreg_nopower) {
writel(host->clk_reg, host->base + MMCICLOCK);
writel(host->datactrl_reg, host->base + MMCIDATACTRL);
writel(host->pwr_reg, host->base + MMCIPOWER);
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
}
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
}
static int mmci_runtime_suspend(struct device *dev)