drm/virtio: Remove redundant return type
diff mbox series

Message ID 20190503163804.31922-1-robert.foss@collabora.com
State New
Headers show
Series
  • drm/virtio: Remove redundant return type
Related show

Commit Message

Robert Foss May 3, 2019, 4:38 p.m. UTC
virtio_gpu_fence_emit() always returns 0, since it
has no error paths.

Consequently no calls for virtio_gpu_fence_emit()
use the return value, and it can be removed.

Signed-off-by: Robert Foss <robert.foss@collabora.com>
Suggested-by: Emil Velikov <emil.velikov@collabora.com>
---

This patch was suggested in this email thread:

[PATCH] drm/virtio: allocate fences with GFP_KERNEL
https://www.spinics.net/lists/dri-devel/msg208536.html

 drivers/gpu/drm/virtio/virtgpu_drv.h   | 2 +-
 drivers/gpu/drm/virtio/virtgpu_fence.c | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

Comments

Chia-I Wu May 3, 2019, 4:40 p.m. UTC | #1
On Fri, May 3, 2019 at 9:38 AM Robert Foss <robert.foss@collabora.com> wrote:
>
> virtio_gpu_fence_emit() always returns 0, since it
> has no error paths.
>
> Consequently no calls for virtio_gpu_fence_emit()
> use the return value, and it can be removed.
>
> Signed-off-by: Robert Foss <robert.foss@collabora.com>
> Suggested-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
> ---
>
> This patch was suggested in this email thread:
>
> [PATCH] drm/virtio: allocate fences with GFP_KERNEL
> https://www.spinics.net/lists/dri-devel/msg208536.html
>
>  drivers/gpu/drm/virtio/virtgpu_drv.h   | 2 +-
>  drivers/gpu/drm/virtio/virtgpu_fence.c | 3 +--
>  2 files changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
> index d577cb76f5ad..9bc56887fbdb 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_drv.h
> +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
> @@ -334,7 +334,7 @@ int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
>  /* virtio_gpu_fence.c */
>  struct virtio_gpu_fence *virtio_gpu_fence_alloc(
>         struct virtio_gpu_device *vgdev);
> -int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
> +void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
>                           struct virtio_gpu_ctrl_hdr *cmd_hdr,
>                           struct virtio_gpu_fence *fence);
>  void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
> diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c
> index 21bd4c4a32d1..e0744ac768cc 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_fence.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_fence.c
> @@ -81,7 +81,7 @@ struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev)
>         return fence;
>  }
>
> -int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
> +void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
>                           struct virtio_gpu_ctrl_hdr *cmd_hdr,
>                           struct virtio_gpu_fence *fence)
>  {
> @@ -96,7 +96,6 @@ int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
>
>         cmd_hdr->flags |= cpu_to_le32(VIRTIO_GPU_FLAG_FENCE);
>         cmd_hdr->fence_id = cpu_to_le64(fence->seq);
> -       return 0;
>  }
>
>  void virtio_gpu_fence_event_process(struct virtio_gpu_device *vgdev,
> --
> 2.20.1
>
Gerd Hoffmann May 6, 2019, 8:56 a.m. UTC | #2
On Fri, May 03, 2019 at 06:38:04PM +0200, Robert Foss wrote:
> virtio_gpu_fence_emit() always returns 0, since it
> has no error paths.
> 
> Consequently no calls for virtio_gpu_fence_emit()
> use the return value, and it can be removed.
> 
> Signed-off-by: Robert Foss <robert.foss@collabora.com>
> Suggested-by: Emil Velikov <emil.velikov@collabora.com>

Doesn't apply cleanly to drm-misc-next, probably conflicts with one of
the other virtio fence patches just pushed.  Can you rebase and resend?

thanks,
  Gerd

Patch
diff mbox series

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index d577cb76f5ad..9bc56887fbdb 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -334,7 +334,7 @@  int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
 /* virtio_gpu_fence.c */
 struct virtio_gpu_fence *virtio_gpu_fence_alloc(
 	struct virtio_gpu_device *vgdev);
-int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
+void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 			  struct virtio_gpu_ctrl_hdr *cmd_hdr,
 			  struct virtio_gpu_fence *fence);
 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c
index 21bd4c4a32d1..e0744ac768cc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_fence.c
+++ b/drivers/gpu/drm/virtio/virtgpu_fence.c
@@ -81,7 +81,7 @@  struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev)
 	return fence;
 }
 
-int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
+void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 			  struct virtio_gpu_ctrl_hdr *cmd_hdr,
 			  struct virtio_gpu_fence *fence)
 {
@@ -96,7 +96,6 @@  int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 
 	cmd_hdr->flags |= cpu_to_le32(VIRTIO_GPU_FLAG_FENCE);
 	cmd_hdr->fence_id = cpu_to_le64(fence->seq);
-	return 0;
 }
 
 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vgdev,