IRQs disabled on entry to twl_rtc_interrupt is not a consequence
of LOCKDEP; both twl6030 and twl4030 explicitly disable IRQs
before calling the module IRQ handlers.
The ISR should not be enabling IRQs; use a threaded IRQ handler
instead.
Also fixes warnings:
WARNING: at kernel/irq/handle.c:130 handle_irq_event_percpu+nnn
irq nnn handler twl_rtc_interrupt+nnn enabled interrupts
Signed-off-by: Todd Poynor <toddpoynor@xxxxxxxxxx>
---
drivers/rtc/rtc-twl.c | 14 +++-----------
1 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 9a81f77..ece41b9 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -362,14 +362,6 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
int res;
u8 rd_reg;
-#ifdef CONFIG_LOCKDEP
- /* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
- * we don't want and can't tolerate. Although it might be
- * friendlier not to borrow this thread context...
- */
- local_irq_enable();
-#endif
-
res = twl_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
if (res)
goto out;
@@ -462,9 +454,9 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev)
if (ret < 0)
goto out1;
- ret = request_irq(irq, twl_rtc_interrupt,
- IRQF_TRIGGER_RISING,
- dev_name(&rtc->dev), rtc);
+ ret = request_threaded_irq(irq, NULL, twl_rtc_interrupt,
+ IRQF_TRIGGER_RISING,
+ dev_name(&rtc->dev), rtc);
if (ret < 0) {
dev_err(&pdev->dev, "IRQ is not free.\n");
goto out1;
--
1.7.3.1
--
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