forked from luck/tmp_suning_uos_patched
rtc-spear: fix for balancing the enable_irq_wake in Power Mgmt
Handle the fix for unbalanced irq for the cases when enable_irq_wake fails, and a warning related to same is displayed on the console. The workaround is handled at the driver level. Signed-off-by: Deepak Sikri <deepak.sikri@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Rajeev Kumar <rajeev-dlh.kumar@st.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -80,6 +80,7 @@ struct spear_rtc_config {
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struct clk *clk;
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spinlock_t lock;
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void __iomem *ioaddr;
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unsigned int irq_wake;
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};
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static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)
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@ -463,9 +464,10 @@ static int spear_rtc_suspend(struct platform_device *pdev, pm_message_t state)
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int irq;
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irq = platform_get_irq(pdev, 0);
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if (device_may_wakeup(&pdev->dev))
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enable_irq_wake(irq);
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else {
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if (device_may_wakeup(&pdev->dev)) {
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if (!enable_irq_wake(irq))
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config->irq_wake = 1;
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} else {
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spear_rtc_disable_interrupt(config);
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clk_disable(config->clk);
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}
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@ -481,9 +483,12 @@ static int spear_rtc_resume(struct platform_device *pdev)
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irq = platform_get_irq(pdev, 0);
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if (device_may_wakeup(&pdev->dev))
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disable_irq_wake(irq);
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else {
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if (device_may_wakeup(&pdev->dev)) {
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if (config->irq_wake) {
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disable_irq_wake(irq);
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config->irq_wake = 0;
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}
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} else {
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clk_enable(config->clk);
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spear_rtc_enable_interrupt(config);
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}
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