drm: use dev_name as default unique name in drm_dev_alloc()

The following code pattern exists in some DRM drivers:

    ddev = drm_dev_alloc(&driver, parent_dev);
    drm_dev_set_unique(ddev, dev_name(parent_dev));

(Sometimes dev_name(ddev->dev) is used, which is the same.)

As suggested in
http://lists.freedesktop.org/archives/dri-devel/2015-December/096441.html,
the unique name of a new DRM device can be set as dev_name(parent_dev)
when parent_dev is not NULL (vgem is a special case).

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index bf64380..a45b32b 100644 (file)
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -738,10 +738,6 @@ static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
        if (!ddev)
                return -ENOMEM;
 
-       ret = drm_dev_set_unique(ddev, dev_name(ddev->dev));
-       if (ret)
-               goto err_unref;
-
        ret = atmel_hlcdc_dc_load(ddev);
        if (ret)
                goto err_unref;

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index eaa4316..bf934cd 100644 (file)
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -633,8 +633,17 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver,
                }
        }
 
+       if (parent) {
+               ret = drm_dev_set_unique(dev, dev_name(parent));
+               if (ret)
+                       goto err_setunique;
+       }
+
        return dev;
 
+err_setunique:
+       if (drm_core_check_feature(dev, DRIVER_GEM))
+               drm_gem_destroy(dev);
 err_ctxbitmap:
        drm_legacy_ctxbitmap_cleanup(dev);
        drm_ht_remove(&dev->map_hash);

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 1930234..fca97d3 100644 (file)
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -363,7 +363,6 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev)
        fsl_dev->np = dev->of_node;
        drm->dev_private = fsl_dev;
        dev_set_drvdata(dev, fsl_dev);
-       drm_dev_set_unique(drm, dev_name(dev));
 
        ret = drm_dev_register(drm, 0);
        if (ret < 0)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 2d23f95..b3a563c 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -1046,10 +1046,6 @@ nouveau_platform_device_create(const struct nvkm_device_tegra_func *func,
                goto err_free;
        }
 
-       err = drm_dev_set_unique(drm, dev_name(&pdev->dev));
-       if (err < 0)
-               goto err_free;
-
        drm->platformdev = pdev;
        platform_set_drvdata(pdev, drm);
 

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 215d6c4..afbb740 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -450,10 +450,6 @@ static int rockchip_drm_bind(struct device *dev)
        if (!drm)
                return -ENOMEM;
 
-       ret = drm_dev_set_unique(drm, dev_name(dev));
-       if (ret)
-               goto err_free;
-
        ret = drm_dev_register(drm, 0);
        if (ret)
                goto err_free;

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index e0f8277..ff948d2 100644 (file)
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -991,7 +991,6 @@ static int host1x_drm_probe(struct host1x_device *dev)
        if (!drm)
                return -ENOMEM;
 
-       drm_dev_set_unique(drm, dev_name(&dev->dev));
        dev_set_drvdata(&dev->dev, drm);
 
        err = drm_dev_register(drm, 0);

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index cbcbbb8..f1655ff 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -184,8 +184,6 @@ static int vc4_drm_bind(struct device *dev)
        vc4->dev = drm;
        drm->dev_private = vc4;
 
-       drm_dev_set_unique(drm, dev_name(dev));
-
        vc4_bo_cache_init(drm);
 
        drm_mode_config_init(drm);