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virtio-gpu: fix shift wrapping bug in virtio_gpu_fence_event_create()

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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: cd7f5ca335 ("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>
This commit is contained in:
Dan Carpenter 2022-09-19 09:36:30 +03:00 committed by Gerd Hoffmann
parent 461a4df2a8
commit 37a7844576
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/virtio/virtgpu_ioctl.c
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@ -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);