diff options
| -rw-r--r-- | drivers/irqchip/irq-loongson-liointc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 18de2c09ece4..63b61474a0cc 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -32,6 +32,8 @@ #define LIOINTC_SHIFT_INTx 4 +#define LIOINTC_ERRATA_IRQ 10 + struct liointc_handler_data { struct liointc_priv *priv; u32 parent_int_map; @@ -41,6 +43,7 @@ struct liointc_priv { struct irq_chip_generic *gc; struct liointc_handler_data handler[LIOINTC_NUM_PARENT]; u8 map_cache[LIOINTC_CHIP_IRQ]; + bool has_lpc_irq_errata; }; static void liointc_chained_handle_irq(struct irq_desc *desc) @@ -54,8 +57,15 @@ static void liointc_chained_handle_irq(struct irq_desc *desc) pending = readl(gc->reg_base + LIOINTC_REG_INTC_STATUS); - if (!pending) - spurious_interrupt(); + if (!pending) { + /* Always blame LPC IRQ if we have that bug */ + if (handler->priv->has_lpc_irq_errata && + (handler->parent_int_map & ~gc->mask_cache & + BIT(LIOINTC_ERRATA_IRQ))) + pending = BIT(LIOINTC_ERRATA_IRQ); + else + spurious_interrupt(); + } while (pending) { int bit = __ffs(pending); |