diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_drv.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index c57466edf45b..e5c4c6c8c967 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -495,6 +495,12 @@ static struct component_match *exynos_drm_match_add(struct device *dev) mutex_lock(&drm_component_lock); + /* Do not retry to probe if there is no any kms driver regitered. */ + if (list_empty(&drm_component_list)) { + mutex_unlock(&drm_component_lock); + return ERR_PTR(-ENODEV); + } + list_for_each_entry(cdev, &drm_component_list, list) { /* * Add components to master only in case that crtc and @@ -585,10 +591,21 @@ static int exynos_drm_platform_probe(struct platform_device *pdev) goto err_unregister_mixer_drv; #endif + match = exynos_drm_match_add(&pdev->dev); + if (IS_ERR(match)) { + ret = PTR_ERR(match); + goto err_unregister_hdmi_drv; + } + + ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops, + match); + if (ret < 0) + goto err_unregister_hdmi_drv; + #ifdef CONFIG_DRM_EXYNOS_G2D ret = platform_driver_register(&g2d_driver); if (ret < 0) - goto err_unregister_hdmi_drv; + goto err_del_component_master; #endif #ifdef CONFIG_DRM_EXYNOS_FIMC @@ -619,23 +636,9 @@ static int exynos_drm_platform_probe(struct platform_device *pdev) goto err_unregister_ipp_drv; #endif - match = exynos_drm_match_add(&pdev->dev); - if (IS_ERR(match)) { - ret = PTR_ERR(match); - goto err_unregister_resources; - } - - ret = component_master_add_with_match(&pdev->dev, &exynos_drm_ops, - match); - if (ret < 0) - goto err_unregister_resources; - return ret; -err_unregister_resources: - #ifdef CONFIG_DRM_EXYNOS_IPP - exynos_platform_device_ipp_unregister(); err_unregister_ipp_drv: platform_driver_unregister(&ipp_driver); err_unregister_gsc_drv: @@ -658,9 +661,11 @@ err_unregister_g2d_drv: #ifdef CONFIG_DRM_EXYNOS_G2D platform_driver_unregister(&g2d_driver); -err_unregister_hdmi_drv: +err_del_component_master: #endif + component_master_del(&pdev->dev, &exynos_drm_ops); +err_unregister_hdmi_drv: #ifdef CONFIG_DRM_EXYNOS_HDMI platform_driver_unregister(&hdmi_driver); err_unregister_mixer_drv: @@ -741,6 +746,18 @@ static int exynos_drm_init(void) { int ret; + /* + * Register device object only in case of Exynos SoC. + * + * Below codes resolves temporarily infinite loop issue incurred + * by Exynos drm driver when using multi-platform kernel. + * So these codes will be replaced with more generic way later. + */ + if (!of_machine_is_compatible("samsung,exynos3") && + !of_machine_is_compatible("samsung,exynos4") && + !of_machine_is_compatible("samsung,exynos5")) + return -ENODEV; + exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, NULL, 0); if (IS_ERR(exynos_drm_pdev)) |