The vgem driver is currently registered independent of any actual
device. Some usage of the dmabuf APIs require an actual device structure
to do anything. Register a dummy platform device for use with dmabuf.
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx>
---
v3: No changes
---
drivers/gpu/drm/vgem/vgem_drv.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index 9fee38a..727eed2 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -335,11 +335,20 @@ static int __init vgem_init(void)
int ret;
vgem_device = drm_dev_alloc(&vgem_driver, NULL);
- if (IS_ERR(vgem_device)) {
- ret = PTR_ERR(vgem_device);
+ if (IS_ERR(vgem_device))
+ return PTR_ERR(vgem_device);
+
+ vgem_device->platformdev = platform_device_register_simple("vgem",
+ -1, NULL, 0);
+
+ if (!vgem_device->platformdev) {
+ ret = -ENODEV;
goto out;
}
+ dma_coerce_mask_and_coherent(&vgem_device->platformdev->dev,
+ DMA_BIT_MASK(64));
+
ret = drm_dev_register(vgem_device, 0);
if (ret)
goto out_unref;
@@ -347,13 +356,15 @@ static int __init vgem_init(void)
return 0;
out_unref:
- drm_dev_unref(vgem_device);
+ platform_device_unregister(vgem_device->platformdev);
out:
+ drm_dev_unref(vgem_device);
return ret;
}
static void __exit vgem_exit(void)
{
+ platform_device_unregister(vgem_device->platformdev);
drm_dev_unregister(vgem_device);
drm_dev_unref(vgem_device);
}
--
2.7.4
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