From: Rob Clark <robdcl...@chromium.org>

Add msm_kms_destroy() and add err return from msm_kms_init().  Prep work
for next patch.

Signed-off-by: Rob Clark <robdcl...@chromium.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c  |  8 +++++++-
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c |  8 +++++++-
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 11 ++++++++---
 drivers/gpu/drm/msm/disp/mdp_kms.h       |  9 +++++++--
 drivers/gpu/drm/msm/msm_kms.h            |  8 +++++++-
 5 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index d93c44f6996d..b77d1a9ace2b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -718,6 +718,8 @@ static void dpu_kms_destroy(struct msm_kms *kms)
        dpu_kms = to_dpu_kms(kms);
 
        _dpu_kms_hw_destroy(dpu_kms);
+
+       msm_kms_destroy(&dpu_kms->base);
 }
 
 static void _dpu_kms_set_encoder_mode(struct msm_kms *kms,
@@ -1108,7 +1110,11 @@ static int dpu_bind(struct device *dev, struct device 
*master, void *data)
 
        platform_set_drvdata(pdev, dpu_kms);
 
-       msm_kms_init(&dpu_kms->base, &kms_funcs);
+       ret = msm_kms_init(&dpu_kms->base, &kms_funcs);
+       if (ret) {
+               DPU_ERROR("failed to init kms, ret=%d\n", ret);
+               goto err;
+       }
        dpu_kms->dev = ddev;
        dpu_kms->pdev = pdev;
 
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c 
b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
index dbf8d429223e..3d729270bde1 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -175,6 +175,8 @@ static void mdp4_destroy(struct msm_kms *kms)
        if (mdp4_kms->rpm_enabled)
                pm_runtime_disable(dev);
 
+       mdp_kms_destroy(&mdp4_kms->base);
+
        kfree(mdp4_kms);
 }
 
@@ -427,7 +429,11 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev)
                goto fail;
        }
 
-       mdp_kms_init(&mdp4_kms->base, &kms_funcs);
+       ret = mdp_kms_init(&mdp4_kms->base, &kms_funcs);
+       if (ret) {
+               DRM_DEV_ERROR(dev->dev, "failed to init kms\n");
+               goto fail;
+       }
 
        kms = &mdp4_kms->base.base;
 
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c 
b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index e193865ce9a2..b3eecf869477 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -232,6 +232,8 @@ static void mdp5_kms_destroy(struct msm_kms *kms)
                aspace->mmu->funcs->detach(aspace->mmu);
                msm_gem_address_space_put(aspace);
        }
+
+       mdp_kms_destroy(&mdp5_kms->base);
 }
 
 #ifdef CONFIG_DEBUG_FS
@@ -592,11 +594,14 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
                return NULL;
 
        mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
-
-       mdp_kms_init(&mdp5_kms->base, &kms_funcs);
-
        pdev = mdp5_kms->pdev;
 
+       ret = mdp_kms_init(&mdp5_kms->base, &kms_funcs);
+       if (ret) {
+               DRM_DEV_ERROR(&pdev->dev, "failed to init kms\n");
+               goto fail;
+       }
+
        irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
        if (irq < 0) {
                ret = irq;
diff --git a/drivers/gpu/drm/msm/disp/mdp_kms.h 
b/drivers/gpu/drm/msm/disp/mdp_kms.h
index 1535c5618491..b0286d5d5130 100644
--- a/drivers/gpu/drm/msm/disp/mdp_kms.h
+++ b/drivers/gpu/drm/msm/disp/mdp_kms.h
@@ -36,12 +36,17 @@ struct mdp_kms {
 };
 #define to_mdp_kms(x) container_of(x, struct mdp_kms, base)
 
-static inline void mdp_kms_init(struct mdp_kms *mdp_kms,
+static inline int mdp_kms_init(struct mdp_kms *mdp_kms,
                const struct mdp_kms_funcs *funcs)
 {
        mdp_kms->funcs = funcs;
        INIT_LIST_HEAD(&mdp_kms->irq_list);
-       msm_kms_init(&mdp_kms->base, &funcs->base);
+       return msm_kms_init(&mdp_kms->base, &funcs->base);
+}
+
+static inline void mdp_kms_destroy(struct mdp_kms *mdp_kms)
+{
+       msm_kms_destroy(&mdp_kms->base);
 }
 
 /*
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index 1cbef6b200b7..0be9e6487556 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -160,7 +160,7 @@ struct msm_kms {
        struct msm_pending_timer pending_timers[MAX_CRTCS];
 };
 
-static inline void msm_kms_init(struct msm_kms *kms,
+static inline int msm_kms_init(struct msm_kms *kms,
                const struct msm_kms_funcs *funcs)
 {
        unsigned i;
@@ -170,6 +170,12 @@ static inline void msm_kms_init(struct msm_kms *kms,
 
        for (i = 0; i < ARRAY_SIZE(kms->pending_timers); i++)
                msm_atomic_init_pending_timer(&kms->pending_timers[i], kms, i);
+
+       return 0;
+}
+
+static inline void msm_kms_destroy(struct msm_kms *kms)
+{
 }
 
 struct msm_kms *mdp4_kms_init(struct drm_device *dev);
-- 
2.26.2

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