On Wed, Oct 25, 2017 at 04:02:26PM -0700, Deepak Sharma wrote:
> From: Deepak Sharma <deepak.sharma@xxxxxxx>
>
> Modify vgem_init to take platform dev as parent in drm_dev_init.
> This will make drm device available at "/sys/devices/platform/vgem"
> in x86 chromebook.
>
> Signed-off-by: Deepak Sharma <deepak.sharma@xxxxxxx>
Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/vgem/vgem_drv.c | 15 +++++++--------
> 1 file changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
> index c938af8c40cf..17e2eafc62b8 100644
> --- a/drivers/gpu/drm/vgem/vgem_drv.c
> +++ b/drivers/gpu/drm/vgem/vgem_drv.c
> @@ -471,31 +471,30 @@ static int __init vgem_init(void)
> if (!vgem_device)
> return -ENOMEM;
>
> - ret = drm_dev_init(&vgem_device->drm, &vgem_driver, NULL);
> - if (ret)
> - goto out_free;
> -
> vgem_device->platform =
> platform_device_register_simple("vgem", -1, NULL, 0);
> if (IS_ERR(vgem_device->platform)) {
> ret = PTR_ERR(vgem_device->platform);
> - goto out_fini;
> + goto out_free;
> }
>
> dma_coerce_mask_and_coherent(&vgem_device->platform->dev,
> DMA_BIT_MASK(64));
> + ret = drm_dev_init(&vgem_device->drm, &vgem_driver, &vgem_device->platform->dev);
> + if (ret)
> + goto out_unregister;
>
> /* Final step: expose the device/driver to userspace */
> ret = drm_dev_register(&vgem_device->drm, 0);
> if (ret)
> - goto out_unregister;
> + goto out_fini;
>
> return 0;
>
> -out_unregister:
> - platform_device_unregister(vgem_device->platform);
> out_fini:
> drm_dev_fini(&vgem_device->drm);
> +out_unregister:
> + platform_device_unregister(vgem_device->platform);
> out_free:
> kfree(vgem_device);
> return ret;
> --
> 2.14.2
>
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--
Sean Paul, Software Engineer, Google / Chromium OS
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