Messages in this thread Patch in this message | | | Date | Wed, 12 Nov 2014 13:43:04 -0000 | From | Thomas Gleixner <> | Subject | [patch 08/16] genirq: Introduce callback irq_chip.irq_write_msi_msg |
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From: Jiang Liu <jiang.liu@linux.intel.com>
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 <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+)
Index: tip/include/linux/irq.h =================================================================== --- tip.orig/include/linux/irq.h +++ tip/include/linux/irq.h @@ -322,6 +322,7 @@ static inline irq_hw_number_t irqd_to_hw * @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; }; @@ -453,6 +455,12 @@ extern void irq_chip_ack_parent(struct i extern int irq_chip_retrigger_hierarchy(struct irq_data *data); #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);
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