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| author | Gerd Hoffmann <kraxel@redhat.com> | 2020-02-07 09:46:53 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-02-07 11:33:55 +0300 |
| commit | 5edbb56082567d754a096286368e99a3377d8c95 (patch) | |
| tree | 72df0e1c229dd3645a53542467343b99afb49b29 /drivers/gpu/drm/virtio/virtgpu_vq.c | |
| parent | 96b5d1bee29f12fe5d75a96992bd67f3c46c9048 (diff) | |
| download | linux-5edbb56082567d754a096286368e99a3377d8c95.tar.xz | |
drm/virtio: fix ring free check
If the virtio device supports indirect ring descriptors we need only one
ring entry for the whole command. Take that into account when checking
whenever the virtqueue has enough free entries for our command.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200207064653.14403-1-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_vq.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_vq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 41e475fbd67b..cc02fc4bab2a 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -330,6 +330,9 @@ static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, bool notify = false; int ret; + if (vgdev->has_indirect) + elemcnt = 1; + again: spin_lock(&vgdev->ctrlq.qlock); |