diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2022-09-19 09:36:30 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2022-09-23 14:16:37 +0300 |
| commit | 37a78445763a5921bb54e9bad01937d0dfa521c1 (patch) | |
| tree | e5ae18f435448c714a15e539fedae6a73cbf27d8 /drivers/gpu/drm/virtio | |
| parent | 461a4df2a833bc6d83139ecf117e2f844f38f655 (diff) | |
| download | linux-37a78445763a5921bb54e9bad01937d0dfa521c1.tar.xz | |
virtio-gpu: fix shift wrapping bug in virtio_gpu_fence_event_create()
The ->ring_idx_mask variable is a u64 so static checkers, Smatch in
this case, complain if the BIT() is not also a u64.
drivers/gpu/drm/virtio/virtgpu_ioctl.c:50 virtio_gpu_fence_event_create()
warn: should '(1 << ring_idx)' be a 64 bit type?
Fixes: cd7f5ca33585 ("drm/virtio: implement context init: add virtio_gpu_fence_event")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/YygN7jY0GdUSQSy0@kili
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/virtio')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_ioctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index 3b1701607aae..5d05093014ac 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -47,7 +47,7 @@ static int virtio_gpu_fence_event_create(struct drm_device *dev, struct virtio_gpu_fence_event *e = NULL; int ret; - if (!(vfpriv->ring_idx_mask & (1 << ring_idx))) + if (!(vfpriv->ring_idx_mask & BIT_ULL(ring_idx))) return 0; e = kzalloc(sizeof(*e), GFP_KERNEL); |