Commit-ID: 9dde55b72dc80bfae4280ddce5dbd69ba8240813
Gitweb: http://git.kernel.org/tip/9dde55b72dc80bfae4280ddce5dbd69ba8240813
Author: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
AuthorDate: Sun, 9 Nov 2014 23:10:28 +0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sun, 23 Nov 2014 13:01:47 +0100
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 <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: Yingjoe Chen <yingjoe.chen@xxxxxxxxxxxx>
Cc: Yijing Wang <wangyijing@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/irq.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 677482b..8badf34 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);
--
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