irqchip/stm32-exti: Fix warning on initialized field overwritten

[linux-2.6-microblaze.git] / drivers / irqchip / irq-stm32-exti.c

diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index f684be7..b5fa76c 100644 (file)
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -173,6 +173,16 @@ static struct irq_chip stm32_exti_h_chip_direct;
 #define EXTI_INVALID_IRQ       U8_MAX
 #define STM32MP1_DESC_IRQ_SIZE (ARRAY_SIZE(stm32mp1_exti_banks) * IRQS_PER_BANK)
 
+/*
+ * Use some intentionally tricky logic here to initialize the whole array to
+ * EXTI_INVALID_IRQ, but then override certain fields, requiring us to indicate
+ * that we "know" that there are overrides in this structure, and we'll need to
+ * disable that warning from W=1 builds.
+ */
+__diag_push();
+__diag_ignore_all("-Woverride-init",
+                 "logic to initialize all and then override some is OK");
+
 static const u8 stm32mp1_desc_irq[] = {
        /* default value */
        [0 ... (STM32MP1_DESC_IRQ_SIZE - 1)] = EXTI_INVALID_IRQ,
@@ -267,6 +277,8 @@ static const u8 stm32mp13_desc_irq[] = {
        [70] = 98,
 };
 
+__diag_pop();
+
 static const struct stm32_exti_drv_data stm32mp1_drv_data = {
        .exti_banks = stm32mp1_exti_banks,
        .bank_nr = ARRAY_SIZE(stm32mp1_exti_banks),