[PATCH 4.16 50/64] x86/ioapic: Use apic_ack_irq()

Greg Kroah-Hartman
2018-06-24T15:36:59Z

From: Thomas Gleixner <tglx@linutronix.de>

commit 2b04e46d8d0b9b7ac08ded672e3eab823f01d77a upstream.

To address the EBUSY fail of interrupt affinity settings in case that the
previous setting has not been cleaned up yet, use the new apic_ack_irq()
function instead of directly invoking ack_APIC_irq().

Preparatory change for the real fix

Fixes: dccfe3147b42 ("x86/vector: Simplify vector move cleanup")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Song Liu <songliubraving@fb.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <liu.song.a23@gmail.com>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: stable@vger.kernel.org
Cc: Mike Travis <mike.travis@hpe.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Tariq Toukan <tariqt@mellanox.com>
Link: https://lkml.kernel.org/r/20180604162224.639011135@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/x86/kernel/apic/io_apic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1859,7 +1859,7 @@ static void ioapic_ir_ack_level(struct i
* intr-remapping table entry. Hence for the io-apic
* EOI we use the pin number.
*/
- ack_APIC_irq();
+ apic_ack_irq(irq_data);
eoi_ioapic_pin(data->entry.vector, data);
}