On Fri, Sep 04, 2020 at 04:39:27PM +0200, Daniel Vetter wrote:
> - Need to embedded the drm_device, but for now we keep the usual
> pointer chasing.
> - No more devm_kzalloc, which fixes a lifetime issues on driver
> remove.
> - No more drm_dev_put, that's done by devm_ now.
>
> Acked-by: Sam Ravnborg <s...@ravnborg.org>
> Cc: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
> Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
> Cc: Alexey Brodkin <abrod...@synopsys.com>
Ping for some testing/feedback/review on the arcpgu series here. I can
also resend that pile again.
Thanks, Daniel
> ---
> drivers/gpu/drm/arc/arcpgu.h | 1 +
> drivers/gpu/drm/arc/arcpgu_drv.c | 33 +++++++++++++-------------------
> 2 files changed, 14 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/arc/arcpgu.h b/drivers/gpu/drm/arc/arcpgu.h
> index 6aac44b953ad..cd9e932f501e 100644
> --- a/drivers/gpu/drm/arc/arcpgu.h
> +++ b/drivers/gpu/drm/arc/arcpgu.h
> @@ -9,6 +9,7 @@
> #define _ARCPGU_H_
>
> struct arcpgu_drm_private {
> + struct drm_device drm;
> void __iomem *regs;
> struct clk *clk;
> struct drm_framebuffer *fb;
> diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c
> b/drivers/gpu/drm/arc/arcpgu_drv.c
> index f164818ec477..68eb4a31c54b 100644
> --- a/drivers/gpu/drm/arc/arcpgu_drv.c
> +++ b/drivers/gpu/drm/arc/arcpgu_drv.c
> @@ -42,18 +42,14 @@ static void arcpgu_setup_mode_config(struct drm_device
> *drm)
>
> DEFINE_DRM_GEM_CMA_FOPS(arcpgu_drm_ops);
>
> -static int arcpgu_load(struct drm_device *drm)
> +static int arcpgu_load(struct arcpgu_drm_private *arcpgu)
> {
> - struct platform_device *pdev = to_platform_device(drm->dev);
> - struct arcpgu_drm_private *arcpgu;
> + struct platform_device *pdev = to_platform_device(arcpgu->drm.dev);
> struct device_node *encoder_node = NULL, *endpoint_node = NULL;
> + struct drm_device *drm = &arcpgu->drm;
> struct resource *res;
> int ret;
>
> - arcpgu = devm_kzalloc(&pdev->dev, sizeof(*arcpgu), GFP_KERNEL);
> - if (arcpgu == NULL)
> - return -ENOMEM;
> -
> drm->dev_private = arcpgu;
>
> arcpgu->clk = devm_clk_get(drm->dev, "pxlclk");
> @@ -162,30 +158,28 @@ static struct drm_driver arcpgu_drm_driver = {
>
> static int arcpgu_probe(struct platform_device *pdev)
> {
> - struct drm_device *drm;
> + struct arcpgu_drm_private *arcpgu;
> int ret;
>
> - drm = drm_dev_alloc(&arcpgu_drm_driver, &pdev->dev);
> - if (IS_ERR(drm))
> - return PTR_ERR(drm);
> + arcpgu = devm_drm_dev_alloc(&pdev->dev, &arcpgu_drm_driver,
> + struct arcpgu_drm_private, drm);
> + if (IS_ERR(arcpgu))
> + return PTR_ERR(arcpgu);
>
> - ret = arcpgu_load(drm);
> + ret = arcpgu_load(arcpgu);
> if (ret)
> - goto err_unref;
> + return ret;
>
> - ret = drm_dev_register(drm, 0);
> + ret = drm_dev_register(&arcpgu->drm, 0);
> if (ret)
> goto err_unload;
>
> - drm_fbdev_generic_setup(drm, 16);
> + drm_fbdev_generic_setup(&arcpgu->drm, 16);
>
> return 0;
>
> err_unload:
> - arcpgu_unload(drm);
> -
> -err_unref:
> - drm_dev_put(drm);
> + arcpgu_unload(&arcpgu->drm);
>
> return ret;
> }
> @@ -196,7 +190,6 @@ static int arcpgu_remove(struct platform_device *pdev)
>
> drm_dev_unregister(drm);
> arcpgu_unload(drm);
> - drm_dev_put(drm);
>
> return 0;
> }
> --
> 2.28.0
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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