drm/nouveau/tmr: ack interrupt before processing alarms



Fixes a race where we can miss an alarm that triggers while we're already
processing previous alarms.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org

parent 89ed10a5

drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -76,8 +76,8 @@ nv04_timer_intr(struct nvkm_timer *tmr)
		u32 stat = nvkm_rd32(device, NV04_PTIMER_INTR_0);

		if (stat & 0x00000001) {
		nvkm_timer_alarm_trigger(tmr);
		nvkm_wr32(device, NV04_PTIMER_INTR_0, 0x00000001);
		nvkm_timer_alarm_trigger(tmr);
		stat &= ~0x00000001;
		}