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Date: Wed, 5 Dec 2018 11:53:16 +0100
From: Gerd Hoffmann <kraxel@...hat.com>
To: dri-devel@...ts.freedesktop.org, David Airlie <airlied@...hat.com>
Cc: Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>,
virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER),
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/3] drm/virtio: fix pageflip flush
Sending the flush command only makes sense if we actually have
a framebuffer attached to the scanout (handle != 0).
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index ead5c53d4e..548265b8e8 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -130,11 +130,12 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
plane->state->src_h >> 16,
plane->state->src_x >> 16,
plane->state->src_y >> 16);
- virtio_gpu_cmd_resource_flush(vgdev, handle,
- plane->state->src_x >> 16,
- plane->state->src_y >> 16,
- plane->state->src_w >> 16,
- plane->state->src_h >> 16);
+ if (handle)
+ virtio_gpu_cmd_resource_flush(vgdev, handle,
+ plane->state->src_x >> 16,
+ plane->state->src_y >> 16,
+ plane->state->src_w >> 16,
+ plane->state->src_h >> 16);
}
static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,
--
2.9.3
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