Sanitize devm_request_and_ioremap()

index 43dcda9..558c405 100644
@@ -573,8 +573,9 @@ extern int devres_release_group(struct device *dev, void *id);
 extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp);
 extern void devm_kfree(struct device *dev, void *p);
 
+void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
 void __iomem *devm_request_and_ioremap(struct device *dev,
-			struct resource *res);
+			struct resource *res) __deprecated;
 
 struct device_dma_parameters {
 	/*

90 lines not on this page · raw message

index 8033cb7..64bac53 100644
@@ -1134,11 +1134,9 @@ static int gpmc_probe(struct platform_device *pdev)
 	phys_base = res->start;
 	mem_size = resource_size(res);
 
-	gpmc_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!gpmc_base) {
-		dev_err(&pdev->dev, "error: request memory / ioremap\n");
-		return -EADDRNOTAVAIL;
-	}
+	gpmc_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(gpmc_base))
+		return PTR_ERR(gpmc_base);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res == NULL)

index e18aa2f..ce7ce42 100644
@@ -312,11 +312,9 @@ static int tegra_emc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	emc_regbase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!emc_regbase) {
-		dev_err(&pdev->dev, "failed to remap registers\n");
-		return -ENOMEM;
-	}
+	emc_regbase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(emc_regbase))
+		return PTR_ERR(emc_regbase);
 
 	pdata = pdev->dev.platform_data;
 

index 7b433f3..a0daa2f 100644
@@ -808,11 +808,9 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
 		return  -ENOMEM;
 	}
 
-	timer->io_base = devm_request_and_ioremap(dev, mem);
-	if (!timer->io_base) {
-		dev_err(dev, "%s: region already claimed.\n", __func__);
-		return -ENOMEM;
-	}
+	timer->io_base = devm_ioremap_resource(dev, mem);
+	if (IS_ERR(timer->io_base))
+		return PTR_ERR(timer->io_base);
 
 	if (dev->of_node) {
 		if (of_find_property(dev->of_node, "ti,timer-alwon", NULL))

index 2d676ab..ca07cb1 100644
@@ -386,11 +386,9 @@ static int s3c_adc_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	adc->regs = devm_request_and_ioremap(dev, regs);
-	if (!adc->regs) {
-		dev_err(dev, "failed to map registers\n");
-		return -ENXIO;
-	}
+	adc->regs = devm_ioremap_resource(dev, regs);
+	if (IS_ERR(adc->regs))
+		return PTR_ERR(adc->regs);
 
 	ret = regulator_enable(adc->vdd);
 	if (ret)

index e44a186..08f7ebd 100644
@@ -21,6 +21,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
 #include <linux/clk.h>
+#include <linux/err.h>
 
 #include <lantiq_soc.h>
 #include <xway_dma.h>

@@ -223,8 +224,8 @@ ltq_dma_init(struct platform_device *pdev)
 		panic("Failed to get dma resource");
 
 	/* remap dma register range */
-	ltq_dma_membase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!ltq_dma_membase)
+	ltq_dma_membase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(ltq_dma_membase))
 		panic("Failed to remap dma resource");
 
 	/* power up and reset the dma engine */

index e30b1ed..9861c86 100644
@@ -150,11 +150,9 @@ static int gptu_probe(struct platform_device *pdev)
 	}
 
 	/* remap gptu register range */
-	gptu_membase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!gptu_membase) {
-		dev_err(&pdev->dev, "Failed to remap resource\n");
-		return -ENOMEM;
-	}
+	gptu_membase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(gptu_membase))
+		return PTR_ERR(gptu_membase);
 
 	/* enable our clock */
 	clk = clk_get(&pdev->dev, NULL);

index 9568178..910fb4c 100644
@@ -214,13 +214,13 @@ static int ltq_pci_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	ltq_pci_membase = devm_request_and_ioremap(&pdev->dev, res_bridge);
-	ltq_pci_mapped_cfg = devm_request_and_ioremap(&pdev->dev, res_cfg);
+	ltq_pci_membase = devm_ioremap_resource(&pdev->dev, res_bridge);
+	if (IS_ERR(ltq_pci_membase))
+		return PTR_ERR(ltq_pci_membase);
 
-	if (!ltq_pci_membase || !ltq_pci_mapped_cfg) {
-		dev_err(&pdev->dev, "failed to remap resources\n");
-		return -ENOMEM;
-	}
+	ltq_pci_mapped_cfg = devm_ioremap_resource(&pdev->dev, res_cfg);
+	if (IS_ERR(ltq_pci_mapped_cfg))
+		return PTR_ERR(ltq_pci_mapped_cfg);
 
 	ltq_pci_startup(pdev);
 

index 536c166..ab92785 100644
@@ -20,6 +20,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>

@@ -257,9 +258,9 @@ static int tegra_ahb_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENODEV;
-	ahb->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!ahb->regs)
-		return -EBUSY;
+	ahb->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(ahb->regs))
+		return PTR_ERR(ahb->regs);
 
 	ahb->dev = &pdev->dev;
 	platform_set_drvdata(pdev, ahb);

index 556222f..c1bfaf4 100644
@@ -31,6 +31,7 @@
  *   Copyright (C) 2006 Tower Technologies
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>

@@ -937,9 +938,9 @@ static int ep93xx_pata_probe(struct platform_device *pdev)
 		goto err_rel_gpio;
 	}
 
-	ide_base = devm_request_and_ioremap(&pdev->dev, mem_res);
-	if (!ide_base) {
-		err = -ENXIO;
+	ide_base = devm_ioremap_resource(&pdev->dev, mem_res);
+	if (IS_ERR(ide_base)) {
+		err = PTR_ERR(ide_base);
 		goto err_rel_gpio;
 	}
 

index 48bbfec..4673fc4 100644
@@ -104,6 +104,7 @@ static int exynos_read(struct hwrng *rng, void *buf,
 static int exynos_rng_probe(struct platform_device *pdev)
 {
 	struct exynos_rng *exynos_rng;
+	struct resource *res;
 
 	exynos_rng = devm_kzalloc(&pdev->dev, sizeof(struct exynos_rng),
 					GFP_KERNEL);

@@ -120,10 +121,10 @@ static int exynos_rng_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	exynos_rng->mem = devm_request_and_ioremap(&pdev->dev,
-			platform_get_resource(pdev, IORESOURCE_MEM, 0));
-	if (!exynos_rng->mem)
-		return -EBUSY;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	exynos_rng->mem = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(exynos_rng->mem))
+		return PTR_ERR(exynos_rng->mem);
 
 	platform_set_drvdata(pdev, exynos_rng);
 

index d8c54e2..749dc16 100644
@@ -124,9 +124,9 @@ static int omap_rng_probe(struct platform_device *pdev)
 		goto err_ioremap;
 	}
 
-	priv->base = devm_request_and_ioremap(&pdev->dev, priv->mem_res);
-	if (!priv->base) {
-		ret = -ENOMEM;
+	priv->base = devm_ioremap_resource(&pdev->dev, priv->mem_res);
+	if (IS_ERR(priv->base)) {
+		ret = PTR_ERR(priv->base);
 		goto err_ioremap;
 	}
 	dev_set_drvdata(&pdev->dev, priv);

index de473ef..3099198 100644
@@ -7,6 +7,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>

@@ -115,9 +116,9 @@ static int __init tx4939_rng_probe(struct platform_device *dev)
 	rngdev = devm_kzalloc(&dev->dev, sizeof(*rngdev), GFP_KERNEL);
 	if (!rngdev)
 		return -ENOMEM;
-	rngdev->base = devm_request_and_ioremap(&dev->dev, r);
-	if (!rngdev->base)
-		return -EBUSY;
+	rngdev->base = devm_ioremap_resource(&dev->dev, r);
+	if (IS_ERR(rngdev->base))
+		return PTR_ERR(rngdev->base);
 
 	rngdev->rng.name = dev_name(&dev->dev);
 	rngdev->rng.data_present = tx4939_rng_data_present;

index 3e8ba02..b33d1f6 100644
@@ -14,6 +14,7 @@
 #include <linux/delay.h>
 #include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>

@@ -1489,9 +1490,9 @@ static int dw_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return irq;
 
-	regs = devm_request_and_ioremap(&pdev->dev, io);
-	if (!regs)
-		return -EBUSY;
+	regs = devm_ioremap_resource(&pdev->dev, io);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
 
 	dw_params = dma_read_byaddr(regs, DW_PARAMS);
 	autocfg = dw_params >> DW_PARAMS_EN & 0x1;

index dbf0e6f..84ae491 100644
@@ -14,6 +14,7 @@
  * http://www.opensource.org/licenses/gpl-license.html
  * http://www.gnu.org/copyleft/gpl.html
  */
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/mm.h>

@@ -1011,9 +1012,9 @@ static int __init imxdma_probe(struct platform_device *pdev)
 	imxdma->devtype = pdev->id_entry->driver_data;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	imxdma->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!imxdma->base)
-		return -EADDRNOTAVAIL;
+	imxdma->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(imxdma->base))
+		return PTR_ERR(imxdma->base);
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)

index c6d98c0..dc74665 100644
@@ -5,6 +5,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>

@@ -782,9 +783,9 @@ static int mmp_pdma_probe(struct platform_device *op)
 	if (!iores)
 		return -EINVAL;
 
-	pdev->base = devm_request_and_ioremap(pdev->dev, iores);
-	if (!pdev->base)
-		return -EADDRNOTAVAIL;
+	pdev->base = devm_ioremap_resource(pdev->dev, iores);
+	if (IS_ERR(pdev->base))
+		return PTR_ERR(pdev->base);
 
 	of_id = of_match_device(mmp_pdma_dt_ids, pdev->dev);
 	if (of_id)

index a9f1cd5..43d5a6c 100644
@@ -9,6 +9,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>

@@ -547,9 +548,9 @@ static int mmp_tdma_probe(struct platform_device *pdev)
 	if (!iores)
 		return -EINVAL;
 
-	tdev->base = devm_request_and_ioremap(&pdev->dev, iores);
-	if (!tdev->base)
-		return -EADDRNOTAVAIL;
+	tdev->base = devm_ioremap_resource(&pdev->dev, iores);
+	if (IS_ERR(tdev->base))
+		return PTR_ERR(tdev->base);
 
 	INIT_LIST_HEAD(&tdev->device.channels);
 

index c39e61b..7d6d8b4 100644
@@ -21,6 +21,7 @@
 #include <linux/delay.h>
 #include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>

@@ -1236,12 +1237,9 @@ static int tegra_dma_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	tdma->base_addr = devm_request_and_ioremap(&pdev->dev, res);
-	if (!tdma->base_addr) {
-		dev_err(&pdev->dev,
-			"Cannot request memregion/iomap dma address\n");
-		return -EADDRNOTAVAIL;
-	}
+	tdma->base_addr = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(tdma->base_addr))
+		return PTR_ERR(tdma->base_addr);
 
 	tdma->dma_clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(tdma->dma_clk)) {

index 7d9bd94..bf6c7c9 100644
@@ -33,6 +33,7 @@
  *   interrupts.
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/gpio.h>
 #include <linux/irq.h>

@@ -544,11 +545,10 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
 	mvchip->chip.of_node = np;
 
 	spin_lock_init(&mvchip->lock);
-	mvchip->membase = devm_request_and_ioremap(&pdev->dev, res);
-	if (! mvchip->membase) {
-		dev_err(&pdev->dev, "Cannot ioremap\n");
+	mvchip->membase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(mvchip->membase)) {
 		kfree(mvchip->chip.label);
-		return -ENOMEM;
+		return PTR_ERR(mvchip->membase);
 	}
 
 	/* The Armada XP has a second range of registers for the

@@ -561,11 +561,11 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
 			return -ENODEV;
 		}
 
-		mvchip->percpu_membase = devm_request_and_ioremap(&pdev->dev, res);
-		if (! mvchip->percpu_membase) {
-			dev_err(&pdev->dev, "Cannot ioremap\n");
+		mvchip->percpu_membase = devm_ioremap_resource(&pdev->dev,
+							       res);
+		if (IS_ERR(mvchip->percpu_membase)) {
 			kfree(mvchip->chip.label);
-			return -ENOMEM;
+			return PTR_ERR(mvchip->percpu_membase);
 		}
 	}
 

index fa2a63c..45d97c4 100644
@@ -20,6 +20,7 @@
  * MA  02110-1301, USA.
  */
 
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>

@@ -253,12 +254,14 @@ static int mxs_gpio_probe(struct platform_device *pdev)
 			parent = of_get_parent(np);
 			base = of_iomap(parent, 0);
 			of_node_put(parent);
+			if (!base)
+				return -EADDRNOTAVAIL;
 		} else {
 			iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-			base = devm_request_and_ioremap(&pdev->dev, iores);
+			base = devm_ioremap_resource(&pdev->dev, iores);
+			if (IS_ERR(base))
+				return PTR_ERR(base);
 		}
-		if (!base)
-			return -EADDRNOTAVAIL;
 	}
 	port->base = base;
 

index 5f45fc4..7a4bf7c 100644
@@ -140,11 +140,9 @@ static int spics_gpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	spics->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!spics->base) {
-		dev_err(&pdev->dev, "request and ioremap fail\n");
-		return -ENOMEM;
-	}
+	spics->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(spics->base))
+		return PTR_ERR(spics->base);
 
 	if (of_property_read_u32(np, "st-spics,peripcfg-reg",
 				&spics->perip_cfg))

index 85841ee7..c20e051 100644
@@ -214,11 +214,10 @@ static int xway_stp_probe(struct platform_device *pdev)
 	if (!chip)
 		return -ENOMEM;
 
-	chip->virt = devm_request_and_ioremap(&pdev->dev, res);
-	if (!chip->virt) {
-		dev_err(&pdev->dev, "failed to remap STP memory\n");
-		return -ENOMEM;
-	}
+	chip->virt = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(chip->virt))
+		return PTR_ERR(chip->virt);
+	
 	chip->gc.dev = &pdev->dev;
 	chip->gc.label = "stp-xway";
 	chip->gc.direction_output = xway_stp_dir_out;

index 63cb643..414ad91 100644
@@ -17,6 +17,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>

@@ -450,11 +451,9 @@ static int tegra_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!regs) {
-		dev_err(&pdev->dev, "Couldn't ioremap regs\n");
-		return -ENODEV;
-	}
+	regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
 
 	for (i = 0; i < tegra_gpio_bank_count; i++) {
 		for (j = 0; j < 4; j++) {

index 67a83e6..411f69b7 100644
@@ -1785,11 +1785,9 @@ static int fimc_probe(struct platform_device *pdev)
 
 	/* resource memory */
 	ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ctx->regs = devm_request_and_ioremap(dev, ctx->regs_res);
-	if (!ctx->regs) {
-		dev_err(dev, "failed to map registers.\n");
-		return -ENXIO;
-	}
+	ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
+	if (IS_ERR(ctx->regs))
+		return PTR_ERR(ctx->regs);
 
 	/* resource irq */
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

index 9537761..36493ce 100644
@@ -913,11 +913,9 @@ static int fimd_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	ctx->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!ctx->regs) {
-		dev_err(dev, "failed to map registers\n");
-		return -ENXIO;
-	}
+	ctx->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(ctx->regs))
+		return PTR_ERR(ctx->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {

index 36c3905..7329abd 100644
@@ -1136,10 +1136,9 @@ static int g2d_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	g2d->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!g2d->regs) {
-		dev_err(dev, "failed to remap I/O memory\n");
-		ret = -ENXIO;
+	g2d->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(g2d->regs)) {
+		ret = PTR_ERR(g2d->regs);
 		goto err_put_clk;
 	}
 

index 8140753..7841c3b 100644
@@ -1692,11 +1692,9 @@ static int gsc_probe(struct platform_device *pdev)
 
 	/* resource memory */
 	ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ctx->regs = devm_request_and_ioremap(dev, ctx->regs_res);
-	if (!ctx->regs) {
-		dev_err(dev, "failed to map registers.\n");
-		return -ENXIO;
-	}
+	ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
+	if (IS_ERR(ctx->regs))
+		return PTR_ERR(ctx->regs);
 
 	/* resource irq */
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

index e9e83ef..a6da774 100644
@@ -656,11 +656,9 @@ static int rotator_probe(struct platform_device *pdev)
 				platform_get_device_id(pdev)->driver_data;
 
 	rot->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	rot->regs = devm_request_and_ioremap(dev, rot->regs_res);
-	if (!rot->regs) {
-		dev_err(dev, "failed to map register\n");
-		return -ENXIO;
-	}
+	rot->regs = devm_ioremap_resource(dev, rot->regs_res);
+	if (IS_ERR(rot->regs))
+		return PTR_ERR(rot->regs);
 
 	rot->irq = platform_get_irq(pdev, 0);
 	if (rot->irq < 0) {

index 41ff79d..d4c3f3d 100644
@@ -2526,11 +2526,9 @@ static int hdmi_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	hdata->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hdata->regs) {
-		DRM_ERROR("failed to map registers\n");
-		return -ENXIO;
-	}
+	hdata->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hdata->regs))
+		return PTR_ERR(hdata->regs);
 
 	ret = devm_gpio_request(&pdev->dev, hdata->hpd_gpio, "HPD");
 	if (ret) {

index 656b2e3..d365c6d 100644
@@ -764,11 +764,9 @@ static int tegra_dc_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	dc->regs = devm_request_and_ioremap(&pdev->dev, regs);
-	if (!dc->regs) {
-		dev_err(&pdev->dev, "failed to remap registers\n");
-		return -ENXIO;
-	}
+	dc->regs = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(dc->regs))
+		return PTR_ERR(dc->regs);
 
 	dc->irq = platform_get_irq(pdev, 0);
 	if (dc->irq < 0) {

index e060c7e..266af78 100644
@@ -1259,9 +1259,9 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
 	if (!regs)
 		return -ENXIO;
 
-	hdmi->regs = devm_request_and_ioremap(&pdev->dev, regs);
-	if (!hdmi->regs)
-		return -EADDRNOTAVAIL;
+	hdmi->regs = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(hdmi->regs))
+		return PTR_ERR(hdmi->regs);
 
 	err = platform_get_irq(pdev, 0);
 	if (err < 0)

index 5d17b11..92e25a7 100644
@@ -139,9 +139,9 @@ static int tegra_host1x_probe(struct platform_device *pdev)
 
 	host1x->irq = err;
 
-	host1x->regs = devm_request_and_ioremap(&pdev->dev, regs);
-	if (!host1x->regs) {
-		err = -EADDRNOTAVAIL;
+	host1x->regs = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(host1x->regs)) {
+		err = PTR_ERR(host1x->regs);
 		goto err;
 	}
 

index 2bfc04d..ebc2241 100644
@@ -723,9 +723,9 @@ static int at91_twi_probe(struct platform_device *pdev)
 	if (!dev->pdata)
 		return -ENODEV;
 
-	dev->base = devm_request_and_ioremap(&pdev->dev, mem);
-	if (!dev->base)
-		return -EBUSY;
+	dev->base = devm_ioremap_resource(&pdev->dev, mem);
+	if (IS_ERR(dev->base))
+		return PTR_ERR(dev->base);
 
 	dev->irq = platform_get_irq(pdev, 0);
 	if (dev->irq < 0)

index b973474..a71ece6 100644
@@ -511,9 +511,9 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!base)
-		return -EBUSY;
+	base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
 
 	i2c_imx = devm_kzalloc(&pdev->dev, sizeof(struct imx_i2c_struct),
 				GFP_KERNEL);

index a873d0a..a337d08 100644
@@ -12,6 +12,7 @@
  * kind, whether express or implied.
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>

@@ -364,9 +365,9 @@ static int ocores_i2c_probe(struct platform_device *pdev)
 	if (!i2c)
 		return -ENOMEM;
 
-	i2c->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!i2c->base)
-		return -EADDRNOTAVAIL;
+	i2c->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(i2c->base))
+		return PTR_ERR(i2c->base);
 
 	pdata = pdev->dev.platform_data;
 	if (pdata) {

index 20d41bf..a9bf4ca 100644
@@ -1103,11 +1103,9 @@ omap_i2c_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	dev->base = devm_request_and_ioremap(&pdev->dev, mem);
-	if (!dev->base) {
-		dev_err(&pdev->dev, "I2C region already claimed\n");
-		return -ENOMEM;
-	}
+	dev->base = devm_ioremap_resource(&pdev->dev, mem);
+	if (IS_ERR(dev->base))
+		return PTR_ERR(dev->base);
 
 	match = of_match_device(of_match_ptr(omap_i2c_of_match), &pdev->dev);
 	if (match) {

index 9bd4d73..4ba4a95 100644
@@ -642,11 +642,9 @@ static int rcar_i2c_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	priv->io = devm_request_and_ioremap(dev, res);
-	if (!priv->io) {
-		dev_err(dev, "cannot ioremap\n");
-		return -ENODEV;
-	}
+	priv->io = devm_ioremap_resource(dev, res);
+	if (IS_ERR(priv->io))
+		return PTR_ERR(priv->io);
 
 	priv->irq = platform_get_irq(pdev, 0);
 	init_waitqueue_head(&priv->wait);

index a290d08..c807a6d 100644
@@ -1042,11 +1042,10 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 		goto err_clk;
 	}
 
-	i2c->regs = devm_request_and_ioremap(&pdev->dev, res);
+	i2c->regs = devm_ioremap_resource(&pdev->dev, res);
 
-	if (i2c->regs == NULL) {
-		dev_err(&pdev->dev, "cannot map IO\n");
-		ret = -ENXIO;
+	if (IS_ERR(i2c->regs)) {
+		ret = PTR_ERR(i2c->regs);
 		goto err_clk;
 	}
 

index 3f1818b..183cf05 100644
@@ -308,10 +308,9 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
 		goto out;
 	}
 
-	siic->base = devm_request_and_ioremap(&pdev->dev, mem_res);
-	if (siic->base == NULL) {
-		dev_err(&pdev->dev, "IO remap failed!\n");
-		err = -ENOMEM;
+	siic->base = devm_ioremap_resource(&pdev->dev, mem_res);
+	if (IS_ERR(siic->base)) {
+		err = PTR_ERR(siic->base);
 		goto out;
 	}
 

index 580a0c0..60195b5 100644
@@ -888,11 +888,11 @@ stu300_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENOENT;
 
-	dev->virtbase = devm_request_and_ioremap(&pdev->dev, res);
+	dev->virtbase = devm_ioremap_resource(&pdev->dev, res);
 	dev_dbg(&pdev->dev, "initialize bus device I2C%d on virtual "
 		"base %p\n", bus_nr, dev->virtbase);
-	if (!dev->virtbase)
-		return -ENOMEM;
+	if (IS_ERR(dev->virtbase))
+		return PTR_ERR(dev->virtbase);
 
 	dev->irq = platform_get_irq(pdev, 0);
 	ret = devm_request_irq(&pdev->dev, dev->irq, stu300_irh, 0, NAME, dev);

index 7b38877..1fb3009 100644
@@ -669,11 +669,9 @@ static int tegra_i2c_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!base) {
-		dev_err(&pdev->dev, "Cannot request/ioremap I2C registers\n");
-		return -EADDRNOTAVAIL;
-	}
+	base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {

index a005265..93f029e 100644
@@ -7,6 +7,7 @@
  * warranty of any kind, whether express or implied.
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>

@@ -225,11 +226,9 @@ static int xlr_i2c_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->iobase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!priv->iobase) {
-		dev_err(&pdev->dev, "devm_request_and_ioremap failed\n");
-		return -EBUSY;
-	}
+	priv->iobase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->iobase))
+		return PTR_ERR(priv->iobase);
 
 	priv->adap.dev.parent = &pdev->dev;
 	priv->adap.owner	= THIS_MODULE;

index a526c0e..83c836b 100644
@@ -557,9 +557,9 @@ static int at91_adc_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	st->reg_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!st->reg_base) {
-		ret = -ENOMEM;
+	st->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(st->reg_base)) {
+		ret = PTR_ERR(st->reg_base);
 		goto error_free_device;
 	}
 

index 695d237..cb1e8f6 100644
@@ -228,11 +228,9 @@ static int spear_kbd_probe(struct platform_device *pdev)
 		kbd->suspended_rate = pdata->suspended_rate;
 	}
 
-	kbd->io_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!kbd->io_base) {
-		dev_err(&pdev->dev, "request-ioremap failed for kbd_region\n");
-		return -ENOMEM;
-	}
+	kbd->io_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(kbd->io_base))
+		return PTR_ERR(kbd->io_base);
 
 	kbd->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(kbd->clk))

index b571eb3..c52e3e5 100644
@@ -8,6 +8,7 @@
  * Driver is originally developed by Pavel Sokolov <[email protected]>
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/input.h>

@@ -206,9 +207,9 @@ static int arc_ps2_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	arc_ps2->addr = devm_request_and_ioremap(&pdev->dev, res);
-	if (!arc_ps2->addr)
-		return -EBUSY;
+	arc_ps2->addr = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(arc_ps2->addr))
+		return PTR_ERR(arc_ps2->addr);
 
 	dev_info(&pdev->dev, "irq = %d, address = 0x%p, ports = %i\n",
 		 irq, arc_ps2->addr, ARC_PS2_PORTS);

index fc17889..f08dbcd 100644
@@ -19,6 +19,7 @@
 
 #define pr_fmt(fmt)	"%s(): " fmt, __func__
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>

@@ -1176,9 +1177,9 @@ static int tegra_smmu_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
 		if (!res)
 			return -ENODEV;
-		smmu->regs[i] = devm_request_and_ioremap(&pdev->dev, res);
-		if (!smmu->regs[i])
-			return -EBUSY;
+		smmu->regs[i] = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(smmu->regs[i]))
+			return PTR_ERR(smmu->regs[i]);
 	}
 
 	err = of_get_dma_window(dev->of_node, NULL, 0, NULL, &base, &size);

index 2b1b9f3..c1a0713 100644
@@ -1098,11 +1098,9 @@ static int gsc_probe(struct platform_device *pdev)
 	mutex_init(&gsc->lock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	gsc->regs = devm_request_and_ioremap(dev, res);
-	if (!gsc->regs) {
-		dev_err(dev, "failed to map registers\n");
-		return -ENOENT;
-	}
+	gsc->regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(gsc->regs))
+		return PTR_ERR(gsc->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {

index 6b155d7..4b9e0a2 100644
@@ -941,9 +941,9 @@ static int emmaprp_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pcdev);
 
-	pcdev->base_emma = devm_request_and_ioremap(&pdev->dev, res_emma);
-	if (!pcdev->base_emma) {
-		ret = -ENXIO;
+	pcdev->base_emma = devm_ioremap_resource(&pdev->dev, res_emma);
+	if (IS_ERR(pcdev->base_emma)) {
+		ret = PTR_ERR(pcdev->base_emma);
 		goto rel_vdev;
 	}
 

index e2716c3..09a8c9c 100644
@@ -433,11 +433,9 @@ static int s3c_camif_probe(struct platform_device *pdev)
 
 	mres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	camif->io_base = devm_request_and_ioremap(dev, mres);
-	if (!camif->io_base) {
-		dev_err(dev, "failed to obtain I/O memory\n");
-		return -ENOENT;
-	}
+	camif->io_base = devm_ioremap_resource(dev, mres);
+	if (IS_ERR(camif->io_base))
+		return PTR_ERR(camif->io_base);
 
 	ret = camif_request_irqs(pdev, camif);
 	if (ret < 0)

index 545b46a..acc0f84 100644
@@ -909,11 +909,9 @@ static int fimc_probe(struct platform_device *pdev)
 	mutex_init(&fimc->lock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	fimc->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (fimc->regs == NULL) {
-		dev_err(&pdev->dev, "Failed to obtain io memory\n");
-		return -ENOENT;
-	}
+	fimc->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(fimc->regs))
+		return PTR_ERR(fimc->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res == NULL) {

index ed67220..67db9f8 100644
@@ -1426,11 +1426,9 @@ static int fimc_lite_probe(struct platform_device *pdev)
 	mutex_init(&fimc->lock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	fimc->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (fimc->regs == NULL) {
-		dev_err(&pdev->dev, "Failed to obtain io memory\n");
-		return -ENOENT;
-	}
+	fimc->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(fimc->regs))
+		return PTR_ERR(fimc->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res == NULL) {

index ec3fa7d..7abae01 100644
@@ -686,11 +686,9 @@ static int s5pcsis_probe(struct platform_device *pdev)
 	}
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	state->regs = devm_request_and_ioremap(&pdev->dev, mem_res);
-	if (state->regs == NULL) {
-		dev_err(&pdev->dev, "Failed to request and remap io memory\n");
-		return -ENXIO;
-	}
+	state->regs = devm_ioremap_resource(&pdev->dev, mem_res);
+	if (IS_ERR(state->regs))
+		return PTR_ERR(state->regs);
 
 	state->irq = platform_get_irq(pdev, 0);
 	if (state->irq < 0) {

index 1bfbc32..6ed259f 100644
@@ -708,11 +708,9 @@ static int g2d_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	dev->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (dev->regs == NULL) {
-			dev_err(&pdev->dev, "Failed to obtain io memory\n");
-			return -ENOENT;
-	}
+	dev->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dev->regs))
+		return PTR_ERR(dev->regs);
 
 	dev->clk = clk_get(&pdev->dev, "sclk_fimg2d");
 	if (IS_ERR_OR_NULL(dev->clk)) {

index 17983c4..3b02375 100644
@@ -1325,11 +1325,9 @@ static int s5p_jpeg_probe(struct platform_device *pdev)
 	/* memory-mapped registers */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	jpeg->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (jpeg->regs == NULL) {
-		dev_err(&pdev->dev, "Failed to obtain io memory\n");
-		return -ENOENT;
-	}
+	jpeg->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(jpeg->regs))
+		return PTR_ERR(jpeg->regs);
 
 	/* interrupt service routine registration */
 	jpeg->irq = ret = platform_get_irq(pdev, 0);

index 379f574..b2e9e1a 100644
@@ -1061,11 +1061,9 @@ static int s5p_mfc_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	dev->regs_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (dev->regs_base == NULL) {
-		dev_err(&pdev->dev, "Failed to obtain io memory\n");
-		return -ENOENT;
-	}
+	dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dev->regs_base))
+		return PTR_ERR(dev->regs_base);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res == NULL) {

index 8bda2c9..1abdc7d 100644
@@ -1707,9 +1707,9 @@ static int mx27_camera_emma_init(struct platform_device *pdev)
 		goto out;
 	}
 
-	pcdev->base_emma = devm_request_and_ioremap(pcdev->dev, res_emma);
-	if (!pcdev->base_emma) {
-		err = -EADDRNOTAVAIL;
+	pcdev->base_emma = devm_ioremap_resource(pcdev->dev, res_emma);
+	if (IS_ERR(pcdev->base_emma)) {
+		err = PTR_ERR(pcdev->base_emma);
 		goto out;
 	}
 

@@ -1824,9 +1824,9 @@ static int mx2_camera_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&pcdev->discard);
 	spin_lock_init(&pcdev->lock);
 
-	pcdev->base_csi = devm_request_and_ioremap(&pdev->dev, res_csi);
-	if (!pcdev->base_csi) {
-		err = -EADDRNOTAVAIL;
+	pcdev->base_csi = devm_ioremap_resource(&pdev->dev, res_csi);
+	if (IS_ERR(pcdev->base_csi)) {
+		err = PTR_ERR(pcdev->base_csi);
 		goto exit;
 	}
 

index 06d31c9..df08736 100644
@@ -10,6 +10,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/reboot.h>
 #include <linux/platform_data/emif_plat.h>

@@ -1468,12 +1469,9 @@ static int __init_or_module emif_probe(struct platform_device *pdev)
 		goto error;
 	}
 
-	emif->base = devm_request_and_ioremap(emif->dev, res);
-	if (!emif->base) {
-		dev_err(emif->dev, "%s: devm_request_and_ioremap() failed\n",
-			__func__);
+	emif->base = devm_ioremap_resource(emif->dev, res);
+	if (IS_ERR(emif->base))
 		goto error;
-	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {

index 186f27d..2ca5f28 100644
@@ -17,6 +17,7 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/ratelimit.h>

@@ -216,9 +217,9 @@ static int tegra20_mc_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
 		if (!res)
 			return -ENODEV;
-		mc->regs[i] = devm_request_and_ioremap(&pdev->dev, res);
-		if (!mc->regs[i])
-			return -EBUSY;
+		mc->regs[i] = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(mc->regs[i]))
+			return PTR_ERR(mc->regs[i]);
 	}
 
 	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

index 0b7ab93..0b97598 100644
@@ -17,6 +17,7 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/ratelimit.h>

@@ -336,9 +337,9 @@ static int tegra30_mc_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
 		if (!res)
 			return -ENODEV;
-		mc->regs[i] = devm_request_and_ioremap(&pdev->dev, res);
-		if (!mc->regs[i])
-			return -EBUSY;
+		mc->regs[i] = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(mc->regs[i]))
+			return PTR_ERR(mc->regs[i]);
 	}
 
 	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

index ab8d0b2..1804331 100644
@@ -9,6 +9,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/err.h>
 #include <linux/gpio.h>
 #include <linux/io.h>
 #include <linux/module.h>

@@ -424,11 +425,9 @@ static int intel_msic_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	msic->irq_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!msic->irq_base) {
-		dev_err(&pdev->dev, "failed to map SRAM memory\n");
-		return -ENOMEM;
-	}
+	msic->irq_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(msic->irq_base))
+		return PTR_ERR(msic->irq_base);
 
 	platform_set_drvdata(pdev, msic);
 

index 3c09cbb..c208238 100644
@@ -159,11 +159,9 @@ static int ssc_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	ssc->regs = devm_request_and_ioremap(&pdev->dev, regs);
-	if (!ssc->regs) {
-		dev_dbg(&pdev->dev, "ioremap failed\n");
-		return -EINVAL;
-	}
+	ssc->regs = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(ssc->regs))
+		return PTR_ERR(ssc->regs);
 
 	ssc->phybase = regs->start;
 

index 5e1fb1d..41c27b7 100644
@@ -10,6 +10,7 @@
  * (at your option) any later version.
  */
 
+#include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/io.h>

@@ -46,9 +47,9 @@ int dw_mci_pltfm_register(struct platform_device *pdev,
 	host->dev = &pdev->dev;
 	host->irq_flags = 0;
 	host->pdata = pdev->dev.platform_data;
-	host->regs = devm_request_and_ioremap(&pdev->dev, regs);
-	if (!host->regs)
-		return -ENOMEM;
+	host->regs = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(host->regs))
+		return PTR_ERR(host->regs);
 
 	if (drv_data && drv_data->init) {
 		ret = drv_data->init(host);

index 206fe49..5b66555 100644
@@ -614,9 +614,9 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	host = mmc_priv(mmc);
 	ssp = &host->ssp;
 	ssp->dev = &pdev->dev;
-	ssp->base = devm_request_and_ioremap(&pdev->dev, iores);
-	if (!ssp->base) {
-		ret = -EADDRNOTAVAIL;
+	ssp->base = devm_ioremap_resource(&pdev->dev, iores);
+	if (IS_ERR(ssp->base)) {
+		ret = PTR_ERR(ssp->base);
 		goto out_mmc_free;
 	}
 

index 82a8de1..a0c6214 100644
@@ -651,10 +651,9 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
 #endif
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	host->ioaddr = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->ioaddr) {
-		dev_err(dev, "failed to map registers\n");
-		ret = -ENXIO;
+	host->ioaddr = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->ioaddr)) {
+		ret = PTR_ERR(host->ioaddr);
 		goto err_req_regs;
 	}
 

index 2aabd96..8a82b8b 100644
@@ -949,10 +949,9 @@ static int spear_smi_probe(struct platform_device *pdev)
 
 	smi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	dev->io_base = devm_request_and_ioremap(&pdev->dev, smi_base);
-	if (!dev->io_base) {
-		ret = -EIO;
-		dev_err(&pdev->dev, "devm_request_and_ioremap fail\n");
+	dev->io_base = devm_ioremap_resource(&pdev->dev, smi_base);
+	if (IS_ERR(dev->io_base)) {
+		ret = PTR_ERR(dev->io_base);
 		goto err;
 	}
 

index a2dc2ae..c3525d2 100644
@@ -16,6 +16,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
+#include <linux/err.h>
 #include <linux/sizes.h>
 
 #include <linux/types.h>

@@ -55,12 +56,10 @@ static int autcpu12_nvram_probe(struct platform_device *pdev)
 	priv->map.bankwidth	= 4;
 	priv->map.phys		= res->start;
 	priv->map.size		= resource_size(res);
-	priv->map.virt		= devm_request_and_ioremap(&pdev->dev, res);
+	priv->map.virt = devm_ioremap_resource(&pdev->dev, res);
 	strcpy((char *)priv->map.name, res->name);
-	if (!priv->map.virt) {
-		dev_err(&pdev->dev, "failed to remap mem resource\n");
-		return -EBUSY;
-	}
+	if (IS_ERR(priv->map.virt))
+		return PTR_ERR(priv->map.virt);
 
 	simple_map_init(&priv->map);
 

index 3c3c791..d1da6ed 100644
@@ -7,6 +7,7 @@
  *  Copyright (C) 2010 John Crispin <[email protected]>
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>

@@ -136,10 +137,9 @@ ltq_mtd_probe(struct platform_device *pdev)
 	ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
 	ltq_mtd->map->phys = ltq_mtd->res->start;
 	ltq_mtd->map->size = resource_size(ltq_mtd->res);
-	ltq_mtd->map->virt = devm_request_and_ioremap(&pdev->dev, ltq_mtd->res);
-	if (!ltq_mtd->map->virt) {
-		dev_err(&pdev->dev, "failed to remap mem resource\n");
-		err = -EBUSY;
+	ltq_mtd->map->virt = devm_ioremap_resource(&pdev->dev, ltq_mtd->res);
+	if (IS_ERR(ltq_mtd->map->virt)) {
+		err = PTR_ERR(ltq_mtd->map->virt);
 		goto err_out;
 	}
 

index 67e62d3..c543cc0 100644
@@ -937,42 +937,35 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
 	if (!res)
 		return -EINVAL;
 
-	host->data_va = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->data_va) {
-		dev_err(&pdev->dev, "data ioremap failed\n");
-		return -ENOMEM;
-	}
+	host->data_va = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->data_va))
+		return PTR_ERR(host->data_va);
+	
 	host->data_pa = (dma_addr_t)res->start;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_addr");
 	if (!res)
 		return -EINVAL;
 
-	host->addr_va = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->addr_va) {
-		dev_err(&pdev->dev, "ale ioremap failed\n");
-		return -ENOMEM;
-	}
+	host->addr_va = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->addr_va))
+		return PTR_ERR(host->addr_va);
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand_cmd");
 	if (!res)
 		return -EINVAL;
 
-	host->cmd_va = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->cmd_va) {
-		dev_err(&pdev->dev, "ale ioremap failed\n");
-		return -ENOMEM;
-	}
+	host->cmd_va = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->cmd_va))
+		return PTR_ERR(host->cmd_va);
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fsmc_regs");
 	if (!res)
 		return -EINVAL;
 
-	host->regs_va = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->regs_va) {
-		dev_err(&pdev->dev, "regs ioremap failed\n");
-		return -ENOMEM;
-	}
+	host->regs_va = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->regs_va))
+		return PTR_ERR(host->regs_va);
 
 	host->clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(host->clk)) {

index f182bef..0ca22ae 100644
@@ -677,11 +677,10 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	host->io_base = devm_request_and_ioremap(&pdev->dev, rc);
-	if (host->io_base == NULL) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		return -EIO;
-	}
+	host->io_base = devm_ioremap_resource(&pdev->dev, rc);
+	if (IS_ERR(host->io_base))
+		return PTR_ERR(host->io_base);
+	
 	host->io_base_phy = rc->start;
 
 	mtd = &host->mtd;

index 030b78c..be94ed5 100644
@@ -778,11 +778,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 	}
 	host->io_base_dma = rc->start;
 
-	host->io_base = devm_request_and_ioremap(&pdev->dev, rc);
-	if (host->io_base == NULL) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		return -ENOMEM;
-	}
+	host->io_base = devm_ioremap_resource(&pdev->dev, rc);
+	if (IS_ERR(host->io_base))
+		return PTR_ERR(host->io_base);
 
 	if (pdev->dev.of_node)
 		host->ncfg = lpc32xx_parse_dt(&pdev->dev);

index 45204e4..60ac5b9 100644
@@ -1437,9 +1437,9 @@ static int mxcnd_probe(struct platform_device *pdev)
 		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 		if (!res)
 			return -ENODEV;
-		host->regs_ip = devm_request_and_ioremap(&pdev->dev, res);
-		if (!host->regs_ip)
-			return -ENOMEM;
+		host->regs_ip = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(host->regs_ip))
+			return PTR_ERR(host->regs_ip);
 
 		res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	} else {

@@ -1449,9 +1449,9 @@ static int mxcnd_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENODEV;
 
-	host->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!host->base)
-		return -ENOMEM;
+	host->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(host->base))
+		return PTR_ERR(host->base);
 
 	host->main_area0 = host->base;
 

index df954b4..d65afd2 100644
@@ -952,10 +952,9 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
 	info->platform	= plat;
 	info->cpu_type	= cpu_type;
 
-	info->regs	= devm_request_and_ioremap(&pdev->dev, res);
-	if (info->regs == NULL) {
-		dev_err(&pdev->dev, "cannot reserve register region\n");
-		err = -EIO;
+	info->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(info->regs)) {
+		err = PTR_ERR(info->regs);
 		goto exit_error;
 	}
 

index e3d7266..e1e8748 100644
@@ -9,6 +9,7 @@
  * (C) Copyright TOSHIBA CORPORATION 2004-2007
  * All Rights Reserved.
  */
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/module.h>

@@ -286,9 +287,9 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
 	drvdata = devm_kzalloc(&dev->dev, sizeof(*drvdata), GFP_KERNEL);
 	if (!drvdata)
 		return -ENOMEM;
-	drvdata->base = devm_request_and_ioremap(&dev->dev, res);
-	if (!drvdata->base)
-		return -EBUSY;
+	drvdata->base = devm_ioremap_resource(&dev->dev, res);
+	if (IS_ERR(drvdata->base))
+		return PTR_ERR(drvdata->base);
 
 	hold = plat->hold ?: 20; /* tDH */
 	spw = plat->spw ?: 90; /* max(tREADID, tWP, tRP) */

index 17fbc7a..4c3a7dd 100644
@@ -26,6 +26,7 @@
  * Contributors: Andreas Larsson <[email protected]>
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>

@@ -1683,10 +1684,9 @@ static int grcan_probe(struct platform_device *ofdev)
 	}
 
 	res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);
-	base = devm_request_and_ioremap(&ofdev->dev, res);
-	if (!base) {
-		dev_err(&ofdev->dev, "couldn't map IO resource\n");
-		err = -EADDRNOTAVAIL;
+	base = devm_ioremap_resource(&ofdev->dev, res);
+	if (IS_ERR(base)) {
+		err = PTR_ERR(base);
 		goto exit_error;
 	}
 

index b43d68b..a3431aa 100644
@@ -22,6 +22,7 @@
   Author: Giuseppe Cavallaro <[email protected]>
 *******************************************************************************/
 
+#include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/of.h>

@@ -88,11 +89,9 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENODEV;
 
-	addr = devm_request_and_ioremap(dev, res);
-	if (!addr) {
-		pr_err("%s: ERROR: memory mapping failed", __func__);
-		return -ENOMEM;
-	}
+	addr = devm_ioremap_resource(dev, res);
+	if (IS_ERR(addr))
+		return PTR_ERR(addr);
 
 	if (pdev->dev.of_node) {
 		plat_dat = devm_kzalloc(&pdev->dev,

index 471c71f..75933a6 100644
@@ -1503,10 +1503,9 @@ static int at91_gpio_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	at91_chip->regbase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!at91_chip->regbase) {
-		dev_err(&pdev->dev, "failed to map registers, ignoring.\n");
-		ret = -EBUSY;
+	at91_chip->regbase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(at91_chip->regbase)) {
+		ret = PTR_ERR(at91_chip->regbase);
 		goto err;
 	}
 

index d347b9f..4eb6d2c 100644
@@ -959,9 +959,9 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	pc->base = devm_request_and_ioremap(dev, &iomem);
-	if (!pc->base)
-		return -EADDRNOTAVAIL;
+	pc->base = devm_ioremap_resource(dev, &iomem);
+	if (IS_ERR(pc->base))
+		return PTR_ERR(pc->base);
 
 	pc->gpio_chip = bcm2835_gpio_chip;
 	pc->gpio_chip.dev = dev;

index fbb3715..8b7e7bc 100644
@@ -715,11 +715,9 @@ static int __init u300_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	gpio->base = devm_request_and_ioremap(&pdev->dev, memres);
-	if (!gpio->base) {
-		dev_err(gpio->dev, "could not get remap memory\n");
-		return -ENOMEM;
-	}
+	gpio->base = devm_ioremap_resource(&pdev->dev, memres);
+	if (IS_ERR(gpio->base))
+		return PTR_ERR(gpio->base);
 
 	gpio->clk = devm_clk_get(gpio->dev, NULL);
 	if (IS_ERR(gpio->clk)) {

index de05b64..5e77242 100644
@@ -866,11 +866,9 @@ static int exynos5440_pinctrl_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	priv->reg_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!priv->reg_base) {
-		dev_err(dev, "ioremap failed\n");
-		return -ENODEV;
-	}
+	priv->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->reg_base))
+		return PTR_ERR(priv->reg_base);
 
 	ret = exynos5440_gpiolib_register(pdev, priv);
 	if (ret)

index 8ed20e8..a5d9d56 100644
@@ -411,14 +411,11 @@ static int pinctrl_falcon_probe(struct platform_device *pdev)
 			dev_err(&ppdev->dev, "failed to get clock\n");
 			return PTR_ERR(falcon_info.clk[*bank]);
 		}
-		falcon_info.membase[*bank] =
-				devm_request_and_ioremap(&pdev->dev, &res);
-		if (!falcon_info.membase[*bank]) {
-			dev_err(&pdev->dev,
-				"Failed to remap memory for bank %d\n",
-				*bank);
-			return -ENOMEM;
-		}
+		falcon_info.membase[*bank] = devm_ioremap_resource(&pdev->dev,
+								   &res);
+		if (IS_ERR(falcon_info.membase[*bank]))
+			return PTR_ERR(falcon_info.membase[*bank]);
+		
 		avail = pad_r32(falcon_info.membase[*bank],
 					LTQ_PADC_AVAIL);
 		pins = fls(avail);

index 43a6f1f..4cebb9c 100644
@@ -584,9 +584,9 @@ int imx_pinctrl_probe(struct platform_device *pdev,
 	if (!res)
 		return -ENOENT;
 
-	ipctl->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!ipctl->base)
-		return -EBUSY;
+	ipctl->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(ipctl->base))
+		return PTR_ERR(ipctl->base);
 
 	imx_pinctrl_desc.name = dev_name(&pdev->dev);
 	imx_pinctrl_desc.pins = info->pins;

index 1bb16ff..96e7cfb 100644
@@ -1367,9 +1367,9 @@ static int nmk_gpio_probe(struct platform_device *dev)
 		goto out;
 	}
 
-	base = devm_request_and_ioremap(&dev->dev, res);
-	if (!base) {
-		ret = -ENOMEM;
+	base = devm_ioremap_resource(&dev->dev, res);
+	if (IS_ERR(base)) {
+		ret = PTR_ERR(base);
 		goto out;
 	}
 

index 51f8a38..1f49bb0 100644
@@ -11,6 +11,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/io.h>

@@ -187,9 +188,9 @@ int pxa3xx_pinctrl_register(struct platform_device *pdev,
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENOENT;
-	info->virt_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!info->virt_base)
-		return -ENOMEM;
+	info->virt_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(info->virt_base))
+		return PTR_ERR(info->virt_base);
 	info->pctrl = pinctrl_register(desc, &pdev->dev, info);
 	if (!info->pctrl) {
 		dev_err(&pdev->dev, "failed to register PXA pinmux driver\n");

index fd7b24c..7e6669c 100644
@@ -917,11 +917,9 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	drvdata->virt_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!drvdata->virt_base) {
-		dev_err(dev, "ioremap failed\n");
-		return -ENODEV;
-	}
+	drvdata->virt_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(drvdata->virt_base))
+		return PTR_ERR(drvdata->virt_base);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (res)

index 718ec57..2b57725 100644
@@ -1078,9 +1078,9 @@ static int u300_pmx_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENOENT;
 
-	upmx->virtbase = devm_request_and_ioremap(&pdev->dev, res);
-	if (!upmx->virtbase)
-		return -ENOMEM;
+	upmx->virtbase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(upmx->virtbase))
+		return PTR_ERR(upmx->virtbase);
 
 	upmx->pctl = pinctrl_register(&u300_pmx_desc, &pdev->dev, upmx);
 	if (!upmx->pctl) {

index 5f0eb04..ae8f3a0 100644
@@ -9,6 +9,7 @@
  *  Copyright (C) 2012 John Crispin <[email protected]>
  */
 
+#include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/of_platform.h>

@@ -687,11 +688,9 @@ static int pinmux_xway_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "Failed to get resource\n");
 		return -ENOENT;
 	}
-	xway_info.membase[0] = devm_request_and_ioremap(&pdev->dev, res);
-	if (!xway_info.membase[0]) {
-		dev_err(&pdev->dev, "Failed to remap resource\n");
-		return -ENOMEM;
-	}
+	xway_info.membase[0] = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(xway_info.membase[0]))
+		return PTR_ERR(xway_info.membase[0]);
 
 	match = of_match_device(xway_match, &pdev->dev);
 	if (match)

index 3cf4ecd..295b349 100644
@@ -540,11 +540,9 @@ static int plgpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	plgpio->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!plgpio->base) {
-		dev_err(&pdev->dev, "request and ioremap fail\n");
-		return -ENOMEM;
-	}
+	plgpio->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(plgpio->base))
+		return PTR_ERR(plgpio->base);
 
 	ret = plgpio_probe_dt(pdev, plgpio);
 	if (ret) {