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.
Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx>
---
I realize the original driver had a note about 'drop platform support'. I
strongly dislike platform devices but they are the easiest way to get a device
structure for use with APIs like dmabuf.
---
drivers/gpu/drm/vgem/vgem_drv.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index a1f42d1..b94feef 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -329,12 +329,19 @@ static struct drm_driver vgem_driver = {
};
static struct drm_device *vgem_device;
+static struct platform_device *vgem_pdev;
static int __init vgem_init(void)
{
int ret;
- vgem_device = drm_dev_alloc(&vgem_driver, NULL);
+ vgem_pdev = platform_device_register_simple("vgem", -1, NULL, 0);
+ if (IS_ERR(vgem_pdev))
+ return PTR_ERR(vgem_pdev);
+
+ dma_coerce_mask_and_coherent(&vgem_pdev->dev, DMA_BIT_MASK(64));
+
+ vgem_device = drm_dev_alloc(&vgem_driver, &vgem_pdev->dev);
if (IS_ERR(vgem_device)) {
ret = PTR_ERR(vgem_device);
goto out;
@@ -349,6 +356,8 @@ static int __init vgem_init(void)
out_unref:
drm_dev_unref(vgem_device);
out:
+ platform_device_unregister(vgem_pdev);
+
return ret;
}
@@ -356,6 +365,7 @@ static void __exit vgem_exit(void)
{
drm_dev_unregister(vgem_device);
drm_dev_unref(vgem_device);
+ platform_device_unregister(vgem_pdev);
}
module_init(vgem_init);
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
