drm/exynos: resolve infinite loop issue on multi-platform

This patch resolves temporarily infinite loop issue incurred
when Exynos drm driver is enabled and multi-platform kernel
is used by registering Exynos drm device object only in case
of Exynos SoC. So this patch will be replaced with more generic
way later.

Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index c57466edf45b86e39ba292c9d37117a685fdaabd..d41aae0dcc6086ec6ab9f5175cc483f4661ddbbe 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -741,6 +741,18 @@ 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))