From 6a77623d78b307b34d4cf7886da6a907689bf388 Mon Sep 17 00:00:00 2001 From: Fabien Dessenne Date: Thu, 7 Mar 2019 19:40:36 +0100 Subject: [PATCH] irqchip/stm32: Don't set rising configuration registers at init The rising configuration status register (rtsr) is not banked. As it is shared with the co-processor, it should not be written at probe time, else the co-processor configuration will be lost. Fixes: f9fc1745501e ("irqchip/stm32: Add host and driver data structures") Signed-off-by: Fabien Dessenne Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-stm32-exti.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c index dab37fbfab82..6b19bffbad78 100644 --- a/drivers/irqchip/irq-stm32-exti.c +++ b/drivers/irqchip/irq-stm32-exti.c @@ -716,7 +716,6 @@ stm32_exti_chip_data *stm32_exti_chip_init(struct stm32_exti_host_data *h_data, const struct stm32_exti_bank *stm32_bank; struct stm32_exti_chip_data *chip_data; void __iomem *base = h_data->base; - u32 irqs_mask; stm32_bank = h_data->drv_data->exti_banks[bank_idx]; chip_data = &h_data->chips_data[bank_idx]; @@ -725,10 +724,6 @@ stm32_exti_chip_data *stm32_exti_chip_init(struct stm32_exti_host_data *h_data, raw_spin_lock_init(&chip_data->rlock); - /* Determine number of irqs supported */ - writel_relaxed(~0UL, base + stm32_bank->rtsr_ofst); - irqs_mask = readl_relaxed(base + stm32_bank->rtsr_ofst); - /* * This IP has no reset, so after hot reboot we should * clear registers to avoid residue -- 2.11.0