[PATCH 2/2] drm/exynos: fimd: check error status for drm_iommu_attach_device

[Ajay Kumar]

check error status for drm_iommu_attach_device() and make sure
it propagates till the caller.

Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c 
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 157f4dd..a53d35b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -294,6 +294,8 @@ static int fimd_mgr_initialize(struct exynos_drm_manager 
*mgr,
 {
        struct fimd_context *ctx = mgr_to_fimd(mgr);
        struct exynos_drm_private *priv;
+       int ret;
+
        priv = drm_dev->dev_private;

        mgr->drm_dev = drm_dev;
@@ -306,7 +308,12 @@ static int fimd_mgr_initialize(struct exynos_drm_manager 
*mgr,
                 * a PAGE FAULT when enabled. So clear any channel if enabled.
                 */
                fimd_clear_channel(mgr);
-               drm_iommu_attach_device(mgr->drm_dev, ctx->dev);
+
+               ret = drm_iommu_attach_device(mgr->drm_dev, ctx->dev);
+               if (ret) {
+                       DRM_ERROR("drm_iommu_attach failed.\n");
+                       return ret;
+               }
        }

        return 0;
@@ -1074,8 +1081,14 @@ static int fimd_bind(struct device *dev, struct device 
*master, void *data)
 {
        struct fimd_context *ctx = dev_get_drvdata(dev);
        struct drm_device *drm_dev = data;
+       int ret;
+
+       ret = fimd_mgr_initialize(&ctx->manager, drm_dev);
+       if (ret) {
+               DRM_ERROR("fimd_mgr_initialize failed.\n");
+               return ret;
+       }

-       fimd_mgr_initialize(&ctx->manager, drm_dev);
        exynos_drm_crtc_create(&ctx->manager);
        if (ctx->display)
                exynos_drm_create_enc_conn(drm_dev, ctx->display);
-- 
1.7.9.5