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>
diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
index 19a28a6..4f068e9 100644
--- a/drivers/rtc/rtc-spear.c
+++ b/drivers/rtc/rtc-spear.c
@@ -80,6 +80,7 @@
struct clk *clk;
spinlock_t lock;
void __iomem *ioaddr;
+ unsigned int irq_wake;
};
static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)
@@ -463,9 +464,10 @@
int irq;
irq = platform_get_irq(pdev, 0);
- if (device_may_wakeup(&pdev->dev))
- enable_irq_wake(irq);
- else {
+ if (device_may_wakeup(&pdev->dev)) {
+ if (!enable_irq_wake(irq))
+ config->irq_wake = 1;
+ } else {
spear_rtc_disable_interrupt(config);
clk_disable(config->clk);
}
@@ -481,9 +483,12 @@
irq = platform_get_irq(pdev, 0);
- if (device_may_wakeup(&pdev->dev))
- disable_irq_wake(irq);
- else {
+ if (device_may_wakeup(&pdev->dev)) {
+ if (config->irq_wake) {
+ disable_irq_wake(irq);
+ config->irq_wake = 0;
+ }
+ } else {
clk_enable(config->clk);
spear_rtc_enable_interrupt(config);
}