[Patch Part2 v4 23/31] x86, irq: Directly call native_compose_msi_msg() for DMAR IRQ
From: Jiang Liu <hidden>
Date: 2014-11-04 12:03:48
Also in:
linux-acpi, linux-pci, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
DMAR interrupt won't be remapped by interrupt remapping hardware, so directly call native_compose_msi_msg() for DMAR IRQ to compose MSI message data. This will help to simplify MSI code later. Signed-off-by: Jiang Liu <redacted> --- arch/x86/kernel/apic/msi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index f6c06ceba9ee..265178b30816 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c@@ -250,12 +250,10 @@ static struct irq_chip dmar_msi_type = { int arch_setup_dmar_msi(unsigned int irq) { - int ret; struct msi_msg msg; + struct irq_cfg *cfg = irq_cfg(irq); - ret = msi_compose_msg(NULL, irq, &msg, -1); - if (ret < 0) - return ret; + native_compose_msi_msg(NULL, irq, cfg->dest_apicid, &msg, -1); dmar_msi_write(irq, &msg); irq_set_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq, "edge");
--
1.7.10.4