diff options
Diffstat (limited to 'drivers/irqchip/irq-stm32-exti.c')
| -rw-r--r-- | drivers/irqchip/irq-stm32-exti.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c index 8f409a95918f..477d0faf0ea2 100644 --- a/drivers/irqchip/irq-stm32-exti.c +++ b/drivers/irqchip/irq-stm32-exti.c @@ -258,7 +258,16 @@ __init stm32_exti_init(const struct stm32_exti_bank **stm32_exti_banks, writel_relaxed(~0UL, base + stm32_bank->rtsr_ofst); irqs_mask = readl_relaxed(base + stm32_bank->rtsr_ofst); nr_exti = fls(readl_relaxed(base + stm32_bank->rtsr_ofst)); + + /* + * This IP has no reset, so after hot reboot we should + * clear registers to avoid residue + */ + writel_relaxed(0, base + stm32_bank->imr_ofst); + writel_relaxed(0, base + stm32_bank->emr_ofst); writel_relaxed(0, base + stm32_bank->rtsr_ofst); + writel_relaxed(0, base + stm32_bank->ftsr_ofst); + writel_relaxed(~0UL, base + stm32_bank->pr_ofst); pr_info("%s: bank%d, External IRQs available:%#x\n", node->full_name, i, irqs_mask); |