Commit 8db0002a authored by Daniel Vetter's avatar Daniel Vetter
Browse files

drm/arc: Switch to devm_drm_dev_alloc 



- 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: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Acked-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112084358.2771527-1-daniel.vetter@ffwll.ch
parent cdea7251

drivers/gpu/drm/arc/arcpgu.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/arc/arcpgu_drv.c

+13 −20
Original line number Diff line number Diff line
@@ -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 const 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;

}