From 9dde55b72dc80bfae4280ddce5dbd69ba8240813 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sun, 9 Nov 2014 23:10:28 +0800 Subject: [PATCH] genirq: Introduce callback irq_chip.irq_write_msi_msg Introduce callback irq_chip.irq_write_msi_msg, so we can share common code among MSI alike interrupt controllers, such as HPET and DMAR. Signed-off-by: Jiang Liu Cc: Bjorn Helgaas Cc: Grant Likely Cc: Marc Zyngier Cc: Yingjoe Chen Cc: Yijing Wang Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 677482bd8b92..8badf34baf0f 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -322,6 +322,7 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) * @irq_release_resources: optional to release resources acquired with * irq_request_resources * @irq_compose_msi_msg: optional to compose message content for MSI + * @irq_write_msi_msg: optional to write message content for MSI * @flags: chip specific flags */ struct irq_chip { @@ -359,6 +360,7 @@ struct irq_chip { void (*irq_release_resources)(struct irq_data *data); void (*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg); + void (*irq_write_msi_msg)(struct irq_data *data, struct msi_msg *msg); unsigned long flags; }; @@ -459,6 +461,12 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data, bool force); #endif +static inline void irq_chip_write_msi_msg(struct irq_data *data, + struct msi_msg *msg) +{ + data->chip->irq_write_msi_msg(data, msg); +} + /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret); -- 2.30.2