drm: omapdrm: Remove duplicate error messages when mapping memory

The devm_ioremap_resource() call can handle being given a NULL resource,
and prints an error message when mapping fails. Switch the remaining
devm_ioremap() calls to devm_ioremap_resource() and remove all
extraneous resource NULL checks and error messages printed manually by
the driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/dss/dispc.c

@@ -4405,17 +4405,9 @@ static int dispc_bind(struct device *dev, struct device *master, void *data)
 		return r;
 
 	dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
-	if (!dispc_mem) {
-		DSSERR("can't get IORESOURCE_MEM DISPC\n");
-		return -EINVAL;
-	}
-
-	dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start,
-				  resource_size(dispc_mem));
-	if (!dispc.base) {
-		DSSERR("can't ioremap DISPC\n");
-		return -ENOMEM;
-	}
+	dispc.base = devm_ioremap_resource(&pdev->dev, dispc_mem);
+	if (IS_ERR(dispc.base))
+		return PTR_ERR(dispc.base);
 
 	dispc.irq = platform_get_irq(dispc.pdev, 0);
 	if (dispc.irq < 0) {

drivers/gpu/drm/omapdrm/dss/dsi.c

@@ -5326,12 +5326,9 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
 
 	dsi_mem = res;
 
-	dsi->proto_base = devm_ioremap(&dsidev->dev, res->start,
-		resource_size(res));
-	if (!dsi->proto_base) {
-		DSSERR("can't ioremap DSI protocol engine\n");
-		return -ENOMEM;
-	}
+	dsi->proto_base = devm_ioremap_resource(&dsidev->dev, res);
+	if (IS_ERR(dsi->proto_base))
+		return PTR_ERR(dsi->proto_base);
 
 	res = platform_get_resource_byname(dsidev, IORESOURCE_MEM, "phy");
 	if (!res) {
@@ -5346,12 +5343,9 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
 		res = &temp_res;
 	}
 
-	dsi->phy_base = devm_ioremap(&dsidev->dev, res->start,
-		resource_size(res));
-	if (!dsi->phy_base) {
-		DSSERR("can't ioremap DSI PHY\n");
-		return -ENOMEM;
-	}
+	dsi->phy_base = devm_ioremap_resource(&dsidev->dev, res);
+	if (IS_ERR(dsi->phy_base))
+		return PTR_ERR(dsi->phy_base);
 
 	res = platform_get_resource_byname(dsidev, IORESOURCE_MEM, "pll");
 	if (!res) {
@@ -5366,12 +5360,9 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
 		res = &temp_res;
 	}
 
-	dsi->pll_base = devm_ioremap(&dsidev->dev, res->start,
-		resource_size(res));
-	if (!dsi->pll_base) {
-		DSSERR("can't ioremap DSI PLL\n");
-		return -ENOMEM;
-	}
+	dsi->pll_base = devm_ioremap_resource(&dsidev->dev, res);
+	if (IS_ERR(dsi->pll_base))
+		return PTR_ERR(dsi->pll_base);
 
 	dsi->irq = platform_get_irq(dsi->pdev, 0);
 	if (dsi->irq < 0) {

drivers/gpu/drm/omapdrm/dss/dss.c

@@ -1158,17 +1158,9 @@ static int dss_bind(struct device *dev)
 		return r;
 
 	dss_mem = platform_get_resource(dss.pdev, IORESOURCE_MEM, 0);
-	if (!dss_mem) {
-		DSSERR("can't get IORESOURCE_MEM DSS\n");
-		return -EINVAL;
-	}
-
-	dss.base = devm_ioremap(&pdev->dev, dss_mem->start,
-				resource_size(dss_mem));
-	if (!dss.base) {
-		DSSERR("can't ioremap DSS\n");
-		return -ENOMEM;
-	}
+	dss.base = devm_ioremap_resource(&pdev->dev, dss_mem);
+	if (IS_ERR(dss.base))
+		return PTR_ERR(dss.base);
 
 	r = dss_get_clocks();
 	if (r)

drivers/gpu/drm/omapdrm/dss/hdmi4_core.c

@@ -889,16 +889,9 @@ int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
 	struct resource *res;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
-	if (!res) {
-		DSSERR("can't get CORE mem resource\n");
-		return -EINVAL;
-	}
-
 	core->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(core->base)) {
-		DSSERR("can't ioremap CORE\n");
+	if (IS_ERR(core->base))
 		return PTR_ERR(core->base);
-	}
 
 	return 0;
 }

drivers/gpu/drm/omapdrm/dss/hdmi5_core.c

@@ -910,16 +910,9 @@ int hdmi5_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
 	struct resource *res;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
-	if (!res) {
-		DSSERR("can't get CORE IORESOURCE_MEM HDMI\n");
-		return -EINVAL;
-	}
-
 	core->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(core->base)) {
-		DSSERR("can't ioremap HDMI core\n");
+	if (IS_ERR(core->base))
 		return PTR_ERR(core->base);
-	}
 
 	return 0;
 }

drivers/gpu/drm/omapdrm/dss/hdmi_phy.c

@@ -233,16 +233,9 @@ int hdmi_phy_init(struct platform_device *pdev, struct hdmi_phy_data *phy)
 		return r;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
-	if (!res) {
-		DSSERR("can't get PHY mem resource\n");
-		return -EINVAL;
-	}
-
 	phy->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(phy->base)) {
-		DSSERR("can't ioremap TX PHY\n");
+	if (IS_ERR(phy->base))
 		return PTR_ERR(phy->base);
-	}
 
 	return 0;
 }

drivers/gpu/drm/omapdrm/dss/hdmi_pll.c

@@ -180,16 +180,9 @@ int hdmi_pll_init(struct platform_device *pdev, struct hdmi_pll_data *pll,
 	pll->wp = wp;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
-	if (!res) {
-		DSSERR("can't get PLL mem resource\n");
-		return -EINVAL;
-	}
-
 	pll->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(pll->base)) {
-		DSSERR("can't ioremap PLLCTRL\n");
+	if (IS_ERR(pll->base))
 		return PTR_ERR(pll->base);
-	}
 
 	r = dsi_init_pll_data(pdev, pll);
 	if (r) {

drivers/gpu/drm/omapdrm/dss/hdmi_wp.c

@@ -287,17 +287,11 @@ int hdmi_wp_init(struct platform_device *pdev, struct hdmi_wp_data *wp)
 	struct resource *res;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wp");
-	if (!res) {
-		DSSERR("can't get WP mem resource\n");
-		return -EINVAL;
-	}
-	wp->phys_base = res->start;
-
 	wp->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(wp->base)) {
-		DSSERR("can't ioremap HDMI WP\n");
+	if (IS_ERR(wp->base))
 		return PTR_ERR(wp->base);
-	}
+
+	wp->phys_base = res->start;
 
 	return 0;
 }

drivers/gpu/drm/omapdrm/dss/rfbi.c

@@ -965,17 +965,9 @@ static int rfbi_bind(struct device *dev, struct device *master, void *data)
 	sema_init(&rfbi.bus_lock, 1);
 
 	rfbi_mem = platform_get_resource(rfbi.pdev, IORESOURCE_MEM, 0);
-	if (!rfbi_mem) {
-		DSSERR("can't get IORESOURCE_MEM RFBI\n");
-		return -EINVAL;
-	}
-
-	rfbi.base = devm_ioremap(&pdev->dev, rfbi_mem->start,
-				 resource_size(rfbi_mem));
-	if (!rfbi.base) {
-		DSSERR("can't ioremap RFBI\n");
-		return -ENOMEM;
-	}
+	rfbi.base = devm_ioremap_resource(&pdev->dev, rfbi_mem);
+	if (IS_ERR(rfbi.base))
+		return PTR_ERR(rfbi.base);
 
 	clk = clk_get(&pdev->dev, "ick");
 	if (IS_ERR(clk)) {

drivers/gpu/drm/omapdrm/dss/venc.c

@@ -869,17 +869,9 @@ static int venc_bind(struct device *dev, struct device *master, void *data)
 	venc.wss_data = 0;
 
 	venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0);
-	if (!venc_mem) {
-		DSSERR("can't get IORESOURCE_MEM VENC\n");
-		return -EINVAL;
-	}
-
-	venc.base = devm_ioremap(&pdev->dev, venc_mem->start,
-				 resource_size(venc_mem));
-	if (!venc.base) {
-		DSSERR("can't ioremap VENC\n");
-		return -ENOMEM;
-	}
+	venc.base = devm_ioremap_resource(&pdev->dev, venc_mem);
+	if (IS_ERR(venc.base))
+		return PTR_ERR(venc.base);
 
 	r = venc_get_clocks(pdev);
 	if (r)

drivers/gpu/drm/omapdrm/dss/video-pll.c

@@ -150,33 +150,17 @@ struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
 	/* PLL CONTROL */
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, reg_name[id]);
-	if (!res) {
-		dev_err(&pdev->dev,
-			"missing platform resource data for pll%d\n", id);
-		return ERR_PTR(-ENODEV);
-	}
-
 	pll_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(pll_base)) {
-		dev_err(&pdev->dev, "failed to ioremap pll%d reg_name\n", id);
+	if (IS_ERR(pll_base))
 		return ERR_CAST(pll_base);
-	}
 
 	/* CLOCK CONTROL */
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 		clkctrl_name[id]);
-	if (!res) {
-		dev_err(&pdev->dev,
-			"missing platform resource data for pll%d\n", id);
-		return ERR_PTR(-ENODEV);
-	}
-
 	clkctrl_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(clkctrl_base)) {
-		dev_err(&pdev->dev, "failed to ioremap pll%d clkctrl\n", id);
+	if (IS_ERR(clkctrl_base))
 		return ERR_CAST(clkctrl_base);
-	}
 
 	/* CLKIN */