drm/msm: Quiet error during failure in optional resource mappings.

We don't expect to find vbif_nrt or regdma on sdm845, but were clogging
up dmesg with errors about it.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -839,13 +839,13 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
 		dpu_kms->vbif[VBIF_RT] = NULL;
 		goto error;
 	}
-	dpu_kms->vbif[VBIF_NRT] = msm_ioremap(dpu_kms->pdev, "vbif_nrt", "vbif_nrt");
+	dpu_kms->vbif[VBIF_NRT] = msm_ioremap_quiet(dpu_kms->pdev, "vbif_nrt", "vbif_nrt");
 	if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) {
 		dpu_kms->vbif[VBIF_NRT] = NULL;
 		DPU_DEBUG("VBIF NRT is not defined");
 	}
 
-	dpu_kms->reg_dma = msm_ioremap(dpu_kms->pdev, "regdma", "regdma");
+	dpu_kms->reg_dma = msm_ioremap_quiet(dpu_kms->pdev, "regdma", "regdma");
 	if (IS_ERR(dpu_kms->reg_dma)) {
 		dpu_kms->reg_dma = NULL;
 		DPU_DEBUG("REG_DMA is not defined");

drivers/gpu/drm/msm/msm_drv.c

@@ -120,8 +120,8 @@ struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
 	return clk;
 }
 
-void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
-		const char *dbgname)
+void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name,
+			   const char *dbgname, bool quiet)
 {
 	struct resource *res;
 	unsigned long size;
@@ -133,7 +133,8 @@ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
 	if (!res) {
-		DRM_DEV_ERROR(&pdev->dev, "failed to get memory resource: %s\n", name);
+		if (!quiet)
+			DRM_DEV_ERROR(&pdev->dev, "failed to get memory resource: %s\n", name);
 		return ERR_PTR(-EINVAL);
 	}
 
@@ -141,7 +142,8 @@ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 
 	ptr = devm_ioremap(&pdev->dev, res->start, size);
 	if (!ptr) {
-		DRM_DEV_ERROR(&pdev->dev, "failed to ioremap: %s\n", name);
+		if (!quiet)
+			DRM_DEV_ERROR(&pdev->dev, "failed to ioremap: %s\n", name);
 		return ERR_PTR(-ENOMEM);
 	}
 
@@ -151,6 +153,18 @@ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 	return ptr;
 }
 
+void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
+			  const char *dbgname)
+{
+	return _msm_ioremap(pdev, name, dbgname, false);
+}
+
+void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
+				const char *dbgname)
+{
+	return _msm_ioremap(pdev, name, dbgname, true);
+}
+
 void msm_writel(u32 data, void __iomem *addr)
 {
 	if (reglog)

drivers/gpu/drm/msm/msm_drv.h

@@ -411,6 +411,8 @@ struct clk *msm_clk_bulk_get_clock(struct clk_bulk_data *bulk, int count,
 	const char *name);
 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 		const char *dbgname);
+void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
+		const char *dbgname);
 void msm_writel(u32 data, void __iomem *addr);
 u32 msm_readl(const void __iomem *addr);