[Patch Part1 v8 25/37] x86/MSI: Replace msi_update_msg() with irq_chip_compose_msi_msg()

[Jiang Liu]

Function irq_chip_compose_msi_msg() can achieve the same goal as
msi_update_msg(), so kill msi_update_msg().

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1416894816-23245-26-git-send-email-jiang.liu@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/x86/kernel/apic/msi.c |   19 ++-----------------
 1 file changed, 2 insertions(+), 17 deletions(-)

diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 8e8f2435f25e..15429aa112fe 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -53,19 +53,6 @@ static void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
 		MSI_DATA_VECTOR(cfg->vector);
 }
 
-static void msi_update_msg(struct msi_msg *msg, struct irq_data *irq_data)
-{
-	struct irq_cfg *cfg = irqd_cfg(irq_data);
-
-	msg->data &= ~MSI_DATA_VECTOR_MASK;
-	msg->data |= MSI_DATA_VECTOR(cfg->vector);
-	msg->address_lo &= ~MSI_ADDR_DEST_ID_MASK;
-	msg->address_lo |= MSI_ADDR_DEST_ID(cfg->dest_apicid);
-	if (x2apic_enabled())
-		msg->address_hi = MSI_ADDR_BASE_HI |
-				  MSI_ADDR_EXT_DEST_ID(cfg->dest_apicid);
-}
-
 /*
  * IRQ Chip for MSI PCI/PCI-X/PCI-Express Devices,
  * which implement the MSI or MSI-X Capability Structure.
@@ -198,8 +185,7 @@ dmar_msi_set_affinity(struct irq_data *data, const struct cpumask *mask,
 
 	ret = parent->chip->irq_set_affinity(parent, mask, force);
 	if (ret >= 0) {
-		dmar_msi_read(data->irq, &msg);
-		msi_update_msg(&msg, data);
+		irq_chip_compose_msi_msg(data, &msg);
 		dmar_msi_write(data->irq, &msg);
 	}
 
@@ -329,8 +315,7 @@ static int hpet_msi_set_affinity(struct irq_data *data,
 
 	ret = parent->chip->irq_set_affinity(parent, mask, force);
 	if (ret >= 0 && ret != IRQ_SET_MASK_OK_DONE) {
-		hpet_msi_read(data->handler_data, &msg);
-		msi_update_msg(&msg, data);
+		irq_chip_compose_msi_msg(data, &msg);
 		hpet_msi_write(data->handler_data, &msg);
 	}
 
-- 
1.7.10.4

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