From d32d4b3d7c9f6164170c0277740fd45bcd364bf6 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 13 Dec 2016 09:29:55 +1000 Subject: drm/nouveau/ltc: protect clearing of comptags with mutex commit f4e65efc88b64c1dbca275d42a188edccedb56c6 upstream. Signed-off-by: Ben Skeggs Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/ltc') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c index 85b1464c0194..587c52f08d3f 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c @@ -47,8 +47,10 @@ nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count) BUG_ON((first > limit) || (limit >= ltc->num_tags)); + mutex_lock(<c->subdev.mutex); ltc->func->cbc_clear(ltc, first, limit); ltc->func->cbc_wait(ltc); + mutex_unlock(<c->subdev.mutex); } int -- cgit v1.2.3