Merge tag 'exynos-drm-next-v5.10' of...

Merge tag 'exynos-drm-next-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

Two cleanups
- Simply use dev_err_probe() instead of returning -EPROBE_DEFER.
- Drop drm_parms allocation and deallocation code which aren't needed.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1600763939-20032-1-git-send-email-inki.dae@samsung.com

drivers/gpu/drm/exynos/exynos_drm_dma.c

@@ -31,23 +31,6 @@
 #define EXYNOS_DEV_ADDR_START	0x20000000
 #define EXYNOS_DEV_ADDR_SIZE	0x40000000
 
-static inline int configure_dma_max_seg_size(struct device *dev)
-{
-	if (!dev->dma_parms)
-		dev->dma_parms = kzalloc(sizeof(*dev->dma_parms), GFP_KERNEL);
-	if (!dev->dma_parms)
-		return -ENOMEM;
-
-	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
-	return 0;
-}
-
-static inline void clear_dma_max_seg_size(struct device *dev)
-{
-	kfree(dev->dma_parms);
-	dev->dma_parms = NULL;
-}
-
 /*
  * drm_iommu_attach_device- attach device to iommu mapping
  *
@@ -69,10 +52,7 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev,
 		return -EINVAL;
 	}
 
-	ret = configure_dma_max_seg_size(subdrv_dev);
-	if (ret)
-		return ret;
-
+	dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
 	if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) {
 		/*
 		 * Keep the original DMA mapping of the sub-device and
@@ -89,9 +69,6 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev,
 		ret = iommu_attach_device(priv->mapping, subdrv_dev);
 	}
 
-	if (ret)
-		clear_dma_max_seg_size(subdrv_dev);
-
 	return ret;
 }
 
@@ -114,8 +91,6 @@ static void drm_iommu_detach_device(struct drm_device *drm_dev,
 		arm_iommu_attach_device(subdrv_dev, *dma_priv);
 	} else if (IS_ENABLED(CONFIG_IOMMU_DMA))
 		iommu_detach_device(priv->mapping, subdrv_dev);
-
-	clear_dma_max_seg_size(subdrv_dev);
 }
 
 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev,

drivers/gpu/drm/exynos/exynos_drm_dsi.c

@@ -1760,11 +1760,8 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 	dsi->supplies[1].supply = "vddio";
 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies),
 				      dsi->supplies);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_info(dev, "failed to get regulators: %d\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
 
 	dsi->clks = devm_kcalloc(dev,
 			dsi->driver_data->num_clks, sizeof(*dsi->clks),

drivers/gpu/drm/exynos/exynos_hdmi.c

@@ -1797,11 +1797,8 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
 		hdata->regul_bulk[i].supply = supply[i];
 
 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(supply), hdata->regul_bulk);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "failed to get regulators\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
 
 	hdata->reg_hdmi_en = devm_regulator_get_optional(dev, "hdmi-en");