For largely legacy reasons, a global mutex (drm_global_mutex) is taken
around open/close of the drm_device, including serialising the filp
release. For drivers with their own fine grained locking, such global
coordination is a hindrance, albeit off the common hot paths.
References: 7a2c65dd32b1 ("drm: Release filp before global lock")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Ben Skeggs <bskeggs@xxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index b65ae817eabf..2d65a6c27456 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -1092,7 +1092,7 @@ static const struct file_operations
nouveau_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
- .release = drm_release,
+ .release = drm_release_noglobal,
.unlocked_ioctl = nouveau_drm_ioctl,
.mmap = nouveau_ttm_mmap,
.poll = drm_poll,
--
2.25.0
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