diff options
author | Tom Gundersen <teg@jklm.no> | 2016-09-21 16:59:19 +0200 |
---|---|---|
committer | Sean Paul <seanpaul@chromium.org> | 2016-09-22 04:03:48 -0700 |
commit | 0f2886057be322ddfa4858384c40a505f7a32a4a (patch) | |
tree | 95fd93e32cce031f99920cd1937b4e46491e65b3 /drivers | |
parent | c6bf811a0b55ab224fb2c75345641b4bb599475c (diff) | |
download | linux-0f2886057be322ddfa4858384c40a505f7a32a4a.tar.bz2 |
drm: Don't swallow error codes in drm_dev_alloc()
There are many reasons other than ENOMEM that drm_dev_init() can
fail. Return ERR_PTR rather than NULL to be able to distinguish
these in the caller.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921145919.13754-2-teg@jklm.no
Diffstat (limited to 'drivers')
22 files changed, 45 insertions, 45 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c index 6d4ff34737cb..28e6471257d0 100644 --- a/drivers/gpu/drm/arc/arcpgu_drv.c +++ b/drivers/gpu/drm/arc/arcpgu_drv.c @@ -198,8 +198,8 @@ static int arcpgu_probe(struct platform_device *pdev) int ret; drm = drm_dev_alloc(&arcpgu_drm_driver, &pdev->dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); ret = arcpgu_load(drm); if (ret) diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c index d83b46a30327..fb6a418ce6be 100644 --- a/drivers/gpu/drm/arm/hdlcd_drv.c +++ b/drivers/gpu/drm/arm/hdlcd_drv.c @@ -326,8 +326,8 @@ static int hdlcd_drm_bind(struct device *dev) return -ENOMEM; drm = drm_dev_alloc(&hdlcd_driver, dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); drm->dev_private = hdlcd; dev_set_drvdata(dev, drm); diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index c383d724527f..9280358b8f15 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -311,8 +311,8 @@ static int malidp_bind(struct device *dev) return ret; drm = drm_dev_alloc(&malidp_driver, dev); - if (!drm) { - ret = -ENOMEM; + if (IS_ERR(drm)) { + ret = PTR_ERR(drm); goto alloc_fail; } diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c index 8e7483d90c47..5f484310bee9 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c @@ -797,8 +797,8 @@ static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev) int ret; ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev); - if (!ddev) - return -ENOMEM; + if (IS_ERR(ddev)) + return PTR_ERR(ddev); ret = atmel_hlcdc_dc_load(ddev); if (ret) diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 99e67517b5c5..80c7f25b5b74 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -591,7 +591,7 @@ EXPORT_SYMBOL(drm_dev_init); * own struct should look at using drm_dev_init() instead. * * RETURNS: - * Pointer to new DRM device, or NULL if out of memory. + * Pointer to new DRM device, or ERR_PTR on failure. */ struct drm_device *drm_dev_alloc(struct drm_driver *driver, struct device *parent) @@ -601,12 +601,12 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver, dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) - return NULL; + return ERR_PTR(-ENOMEM); ret = drm_dev_init(dev, driver, parent); if (ret) { kfree(dev); - return NULL; + return ERR_PTR(ret); } return dev; diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index d86362fc8ac6..3ceea9cb9d3e 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -236,8 +236,8 @@ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, DRM_DEBUG("\n"); dev = drm_dev_alloc(driver, &pdev->dev); - if (!dev) - return -ENOMEM; + if (IS_ERR(dev)) + return PTR_ERR(dev); ret = pci_enable_device(pdev); if (ret) diff --git a/drivers/gpu/drm/drm_platform.c b/drivers/gpu/drm/drm_platform.c index 2c819ef90090..026269851ce9 100644 --- a/drivers/gpu/drm/drm_platform.c +++ b/drivers/gpu/drm/drm_platform.c @@ -48,8 +48,8 @@ static int drm_get_platform_dev(struct platform_device *platdev, DRM_DEBUG("\n"); dev = drm_dev_alloc(driver, &platdev->dev); - if (!dev) - return -ENOMEM; + if (IS_ERR(dev)) + return PTR_ERR(dev); dev->platformdev = platdev; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index e3164d90399d..aa687669e22b 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -529,8 +529,8 @@ static int etnaviv_bind(struct device *dev) int ret; drm = drm_dev_alloc(&etnaviv_drm_driver, dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) { 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 7882387f9bff..0d2ae94e4c67 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -402,8 +402,8 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev) fsl_dev->tcon = fsl_tcon_init(dev); drm = drm_dev_alloc(driver, dev); - if (!drm) { - ret = -ENOMEM; + if (IS_ERR(drm)) { + ret = PTR_ERR(drm); goto disable_pix_clk; } diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c index 1fc2f502d20d..90377a609c98 100644 --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c @@ -207,8 +207,8 @@ static int kirin_drm_bind(struct device *dev) int ret; drm_dev = drm_dev_alloc(driver, dev); - if (!drm_dev) - return -ENOMEM; + if (IS_ERR(drm_dev)) + return PTR_ERR(drm_dev); drm_dev->platformdev = to_platform_device(dev); diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 72c1ae4e02d4..cf83f6507ec8 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -294,8 +294,8 @@ static int mtk_drm_bind(struct device *dev) int ret; drm = drm_dev_alloc(&mtk_drm_driver, dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); drm->dev_private = private; private->drm = drm; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 8a0237008f74..042bde48200d 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -347,9 +347,9 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) int ret; ddev = drm_dev_alloc(drv, dev); - if (!ddev) { + if (IS_ERR(ddev)) { dev_err(dev, "failed to allocate drm_device\n"); - return -ENOMEM; + return PTR_ERR(ddev); } platform_set_drvdata(pdev, ddev); diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 652ab111dd74..3100fd88a015 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -1067,8 +1067,8 @@ nouveau_platform_device_create(const struct nvkm_device_tegra_func *func, goto err_free; drm = drm_dev_alloc(&driver_platform, &pdev->dev); - if (!drm) { - err = -ENOMEM; + if (IS_ERR(drm)) { + err = PTR_ERR(drm); goto err_free; } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 899ef7a2a7b4..73c971e39b1c 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -316,8 +316,8 @@ static int rcar_du_probe(struct platform_device *pdev) rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data; ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev); - if (!ddev) - return -ENOMEM; + if (IS_ERR(ddev)) + return PTR_ERR(ddev); rcdu->ddev = ddev; ddev->dev_private = rcdu; diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 76eaf1de52e4..446b5d7e85f7 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -143,8 +143,8 @@ static int rockchip_drm_bind(struct device *dev) int ret; drm_dev = drm_dev_alloc(&rockchip_drm_driver, dev); - if (!drm_dev) - return -ENOMEM; + if (IS_ERR(drm_dev)) + return PTR_ERR(drm_dev); dev_set_drvdata(dev, drm_dev); diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c index 7cd3804c6dee..49ed3c4b7ac5 100644 --- a/drivers/gpu/drm/sti/sti_drv.c +++ b/drivers/gpu/drm/sti/sti_drv.c @@ -365,8 +365,8 @@ static int sti_bind(struct device *dev) int ret; ddev = drm_dev_alloc(&sti_driver, dev); - if (!ddev) - return -ENOMEM; + if (IS_ERR(ddev)) + return PTR_ERR(ddev); ddev->platformdev = to_platform_device(dev); diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index 9059e3ef9786..0da9862ad8ed 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -121,8 +121,8 @@ static int sun4i_drv_bind(struct device *dev) int ret; drm = drm_dev_alloc(&sun4i_drv_driver, dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL); if (!drv) { diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 4b9f1c79cd7b..8ab47b502d83 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -983,8 +983,8 @@ static int host1x_drm_probe(struct host1x_device *dev) int err; drm = drm_dev_alloc(driver, &dev->dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); dev_set_drvdata(&dev->dev, drm); diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index f0851db6ba6c..cc45d98f9bb5 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -86,8 +86,8 @@ static int udl_usb_probe(struct usb_interface *interface, int r; dev = drm_dev_alloc(&driver, &interface->dev); - if (!dev) - return -ENOMEM; + if (IS_ERR(dev)) + return PTR_ERR(dev); r = drm_dev_register(dev, (unsigned long)udev); if (r) diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index deec53545bea..3c9e7f64b926 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -233,8 +233,8 @@ static int vc4_drm_bind(struct device *dev) return -ENOMEM; drm = drm_dev_alloc(&vc4_drm_driver, dev); - if (!drm) - return -ENOMEM; + if (IS_ERR(drm)) + return PTR_ERR(drm); platform_set_drvdata(pdev, drm); vc4->dev = drm; drm->dev_private = vc4; diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c index c15bafb06665..f36c14729b55 100644 --- a/drivers/gpu/drm/vgem/vgem_drv.c +++ b/drivers/gpu/drm/vgem/vgem_drv.c @@ -334,8 +334,8 @@ static int __init vgem_init(void) int ret; vgem_device = drm_dev_alloc(&vgem_driver, NULL); - if (!vgem_device) { - ret = -ENOMEM; + if (IS_ERR(vgem_device)) { + ret = PTR_ERR(vgem_device); goto out; } diff --git a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c index a59d0e309bfc..26197dd95d5c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c +++ b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c @@ -54,8 +54,8 @@ int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev) int ret; dev = drm_dev_alloc(driver, &vdev->dev); - if (!dev) - return -ENOMEM; + if (IS_ERR(dev)) + return PTR_ERR(dev); dev->virtdev = vdev; vdev->priv = dev; |