From 3733bd8b407211739e72d051e5f30ad82a52c4bc Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Thu, 11 May 2017 16:53:42 +1000 Subject: 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 Cc: stable@vger.kernel.org --- drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c index 7b9ce87f0617..7f48249f41de 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/timer/nv04.c @@ -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; } -- cgit v1.2.3-59-g8ed1b