Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg Kroah-Hartman:
 "Here is the big driver core merge for 3.9-rc1

  There are two major series here, both of which touch lots of drivers
  all over the kernel, and will cause you some merge conflicts:

   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.

   - remove CONFIG_EXPERIMENTAL

  Other than those patches, there's not much here, some minor fixes and
  updates"

Fix up trivial conflicts

* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
  base: memory: fix soft/hard_offline_page permissions
  drivercore: Fix ordering between deferred_probe and exiting initcalls
  backlight: fix class_find_device() arguments
  TTY: mark tty_get_device call with the proper const values
  driver-core: constify data for class_find_device()
  firmware: Ignore abort check when no user-helper is used
  firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
  firmware: Make user-mode helper optional
  firmware: Refactoring for splitting user-mode helper code
  Driver core: treat unregistered bus_types as having no devices
  watchdog: Convert to devm_ioremap_resource()
  thermal: Convert to devm_ioremap_resource()
  spi: Convert to devm_ioremap_resource()
  power: Convert to devm_ioremap_resource()
  mtd: Convert to devm_ioremap_resource()
  mmc: Convert to devm_ioremap_resource()
  mfd: Convert to devm_ioremap_resource()
  media: Convert to devm_ioremap_resource()
  iommu: Convert to devm_ioremap_resource()
  drm: Convert to devm_ioremap_resource()
  ...

32 files changed, 89 insertions, 204 deletions

diff --git a/drivers/usb/chipidea/usbmisc_imx6q.c b/drivers/usb/chipidea/usbmisc_imx6q.c
index 845efe2..a1bce39 100644
--- a/drivers/usb/chipidea/usbmisc_imx6q.c
+++ b/drivers/usb/chipidea/usbmisc_imx6q.c
@@ -98,9 +98,9 @@ static int usbmisc_imx6q_probe(struct platform_device *pdev)
 	spin_lock_init(&data->lock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	data->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!data->base)
-		return -EADDRNOTAVAIL;
+	data->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(data->base))
+		return PTR_ERR(data->base);
 
 	data->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(data->clk)) {
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index f4a21f6..0143ffa 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1982,17 +1982,7 @@ static struct platform_driver at91_udc_driver = {
 	},
 };
 
-static int __init udc_init_module(void)
-{
-	return platform_driver_probe(&at91_udc_driver, at91udc_probe);
-}
-module_init(udc_init_module);
-
-static void __exit udc_exit_module(void)
-{
-	platform_driver_unregister(&at91_udc_driver);
-}
-module_exit(udc_exit_module);
+module_platform_driver_probe(at91_udc_driver, at91udc_probe);
 
 MODULE_DESCRIPTION("AT91 udc driver");
 MODULE_AUTHOR("Thomas Rathbone, David Brownell");
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index a7aed84..bc19496 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -2066,17 +2066,7 @@ static struct platform_driver udc_driver = {
 	},
 };
 
-static int __init udc_init(void)
-{
-	return platform_driver_probe(&udc_driver, usba_udc_probe);
-}
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
-	platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
+module_platform_driver_probe(udc_driver, usba_udc_probe);
 
 MODULE_DESCRIPTION("Atmel USBA UDC driver");
 MODULE_AUTHOR("Haavard Skinnemoen (Atmel)");
diff --git a/drivers/usb/gadget/bcm63xx_udc.c b/drivers/usb/gadget/bcm63xx_udc.c
index 47a4993..8cc8253 100644
--- a/drivers/usb/gadget/bcm63xx_udc.c
+++ b/drivers/usb/gadget/bcm63xx_udc.c
@@ -2351,19 +2351,20 @@ static int bcm63xx_udc_probe(struct platform_device *pdev)
 		dev_err(dev, "error finding USBD resource\n");
 		return -ENXIO;
 	}
-	udc->usbd_regs = devm_request_and_ioremap(dev, res);
+
+	udc->usbd_regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(udc->usbd_regs))
+		return PTR_ERR(udc->usbd_regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (!res) {
 		dev_err(dev, "error finding IUDMA resource\n");
 		return -ENXIO;
 	}
-	udc->iudma_regs = devm_request_and_ioremap(dev, res);
 
-	if (!udc->usbd_regs || !udc->iudma_regs) {
-		dev_err(dev, "error requesting resources\n");
-		return -ENXIO;
-	}
+	udc->iudma_regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(udc->iudma_regs))
+		return PTR_ERR(udc->iudma_regs);
 
 	spin_lock_init(&udc->lock);
 	INIT_WORK(&udc->ep0_wq, bcm63xx_ep0_process);
diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c
index 72cd5e6..fc7cb09 100644
--- a/drivers/usb/gadget/fusb300_udc.c
+++ b/drivers/usb/gadget/fusb300_udc.c
@@ -1547,15 +1547,4 @@ static struct platform_driver fusb300_driver = {
 	},
 };
 
-static int __init fusb300_udc_init(void)
-{
-	return platform_driver_probe(&fusb300_driver, fusb300_probe);
-}
-
-module_init(fusb300_udc_init);
-
-static void __exit fusb300_udc_cleanup(void)
-{
-	platform_driver_unregister(&fusb300_driver);
-}
-module_exit(fusb300_udc_cleanup);
+module_platform_driver_probe(fusb300_driver, fusb300_probe);
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index a0eb857..8efd755 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -1556,17 +1556,7 @@ static struct platform_driver udc_driver = {
 	.resume		= imx_udc_resume,
 };
 
-static int __init udc_init(void)
-{
-	return platform_driver_probe(&udc_driver, imx_udc_probe);
-}
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
-	platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
+module_platform_driver_probe(udc_driver, imx_udc_probe);
 
 MODULE_DESCRIPTION("IMX USB Device Controller driver");
 MODULE_AUTHOR("Darius Augulis <augulis.darius@gmail.com>");
diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c
index dd1c9b1..aa04089 100644
--- a/drivers/usb/gadget/lpc32xx_udc.c
+++ b/drivers/usb/gadget/lpc32xx_udc.c
@@ -3458,17 +3458,7 @@ static struct platform_driver lpc32xx_udc_driver = {
 	},
 };
 
-static int __init udc_init_module(void)
-{
-	return platform_driver_probe(&lpc32xx_udc_driver, lpc32xx_udc_probe);
-}
-module_init(udc_init_module);
-
-static void __exit udc_exit_module(void)
-{
-	platform_driver_unregister(&lpc32xx_udc_driver);
-}
-module_exit(udc_exit_module);
+module_platform_driver_probe(lpc32xx_udc_driver, lpc32xx_udc_probe);
 
 MODULE_DESCRIPTION("LPC32XX udc driver");
 MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>");
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index b6401f1..dfce0cf 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1753,14 +1753,4 @@ static struct platform_driver m66592_driver = {
 	},
 };
 
-static int __init m66592_udc_init(void)
-{
-	return platform_driver_probe(&m66592_driver, m66592_probe);
-}
-module_init(m66592_udc_init);
-
-static void __exit m66592_udc_cleanup(void)
-{
-	platform_driver_unregister(&m66592_driver);
-}
-module_exit(m66592_udc_cleanup);
+module_platform_driver_probe(m66592_driver, m66592_probe);
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index d4ca9f1..d52e869 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -2100,6 +2100,8 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 	int retval, irq;
 	u32 chiprev;
 
+	pr_info("%s: version %s\n", driver_name, DRIVER_VERSION);
+
 	/* insist on Intel/ARM/XScale */
 	asm("mrc%? p15, 0, %0, c0, c0" : "=r" (chiprev));
 	if ((chiprev & CP15R0_VENDOR_MASK) != CP15R0_XSCALE_VALUE) {
@@ -2346,18 +2348,7 @@ static struct platform_driver udc_driver = {
 	},
 };
 
-static int __init udc_init(void)
-{
-	pr_info("%s: version %s\n", driver_name, DRIVER_VERSION);
-	return platform_driver_probe(&udc_driver, pxa25x_udc_probe);
-}
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
-	platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
+module_platform_driver_probe(udc_driver, pxa25x_udc_probe);
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR("Frank Becker, Robert Schwebel, David Brownell");
diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index 5a80751..9a9fadd 100644
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -2031,21 +2031,10 @@ static struct platform_driver r8a66597_driver = {
 		.name =	(char *) udc_name,
 	},
 };
-MODULE_ALIAS("platform:r8a66597_udc");
-
-static int __init r8a66597_udc_init(void)
-{
-	return platform_driver_probe(&r8a66597_driver, r8a66597_probe);
-}
-module_init(r8a66597_udc_init);
 
-static void __exit r8a66597_udc_cleanup(void)
-{
-	platform_driver_unregister(&r8a66597_driver);
-}
-module_exit(r8a66597_udc_cleanup);
+module_platform_driver_probe(r8a66597_driver, r8a66597_probe);
 
 MODULE_DESCRIPTION("R8A66597 USB gadget driver");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Yoshihiro Shimoda");
-
+MODULE_ALIAS("platform:r8a66597_udc");
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 439c3f9..de80fa6 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -3525,10 +3525,9 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	hsotg->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hsotg->regs) {
-		dev_err(dev, "cannot map registers\n");
-		ret = -ENXIO;
+	hsotg->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hsotg->regs)) {
+		ret = PTR_ERR(hsotg->regs);
 		goto err_clk;
 	}
 
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index 52379b1..94ca33b 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -1295,10 +1295,9 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	hsudc->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hsudc->regs) {
-		dev_err(dev, "error mapping device register area\n");
-		ret = -EBUSY;
+	hsudc->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hsudc->regs)) {
+		ret = PTR_ERR(hsudc->regs);
 		goto err_res;
 	}
 
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index 27639487..f3beac4 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -143,10 +143,9 @@ static int ehci_atmel_drv_probe(struct platform_device *pdev)
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (hcd->regs == NULL) {
-		dev_dbg(&pdev->dev, "error mapping memory\n");
-		retval = -EFAULT;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		retval = PTR_ERR(hcd->regs);
 		goto fail_request_resource;
 	}
 
diff --git a/drivers/usb/host/ehci-grlib.c b/drivers/usb/host/ehci-grlib.c
index 1fc8929..5d75de9 100644
--- a/drivers/usb/host/ehci-grlib.c
+++ b/drivers/usb/host/ehci-grlib.c
@@ -25,7 +25,7 @@
  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-
+#include <linux/err.h>
 #include <linux/signal.h>
 
 #include <linux/of_irq.h>
@@ -118,10 +118,9 @@ static int ehci_hcd_grlib_probe(struct platform_device *op)
 		goto err_irq;
 	}
 
-	hcd->regs = devm_request_and_ioremap(&op->dev, &res);
-	if (!hcd->regs) {
-		pr_err("%s: devm_request_and_ioremap failed\n", __FILE__);
-		rv = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&op->dev, &res);
+	if (IS_ERR(hcd->regs)) {
+		rv = PTR_ERR(hcd->regs);
 		goto err_ioremap;
 	}
 
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index dedb80b..e2004de 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -85,10 +85,9 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hcd->regs) {
-		dev_err(dev, "error mapping memory\n");
-		ret = -EFAULT;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
 		goto err_alloc;
 	}
 
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 58fa0c9..ca75063 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -18,6 +18,7 @@
  *
  * Licensed under the GNU/GPL. See COPYING for details.
  */
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/hrtimer.h>
 #include <linux/io.h>
@@ -104,9 +105,9 @@ static int ehci_platform_probe(struct platform_device *dev)
 	hcd->rsrc_start = res_mem->start;
 	hcd->rsrc_len = resource_size(res_mem);
 
-	hcd->regs = devm_request_and_ioremap(&dev->dev, res_mem);
-	if (!hcd->regs) {
-		err = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+	if (IS_ERR(hcd->regs)) {
+		err = PTR_ERR(hcd->regs);
 		goto err_put_hcd;
 	}
 	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index 45aceef..56dc732 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -12,6 +12,7 @@
  * This file is licenced under the GPL.
  */
 
+#include <linux/err.h>
 #include <linux/signal.h>
 
 #include <linux/of.h>
@@ -121,10 +122,9 @@ static int ehci_hcd_ppc_of_probe(struct platform_device *op)
 		goto err_irq;
 	}
 
-	hcd->regs = devm_request_and_ioremap(&op->dev, &res);
-	if (!hcd->regs) {
-		pr_err("%s: devm_request_and_ioremap failed\n", __FILE__);
-		rv = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&op->dev, &res);
+	if (IS_ERR(hcd->regs)) {
+		rv = PTR_ERR(hcd->regs);
 		goto err_ioremap;
 	}
 
diff --git a/drivers/usb/host/ehci-sead3.c b/drivers/usb/host/ehci-sead3.c
index efad02d..f55477c 100644
--- a/drivers/usb/host/ehci-sead3.c
+++ b/drivers/usb/host/ehci-sead3.c
@@ -19,6 +19,7 @@
  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/err.h>
 #include <linux/platform_device.h>
 
 static int ehci_sead3_setup(struct usb_hcd *hcd)
@@ -112,10 +113,9 @@ static int ehci_hcd_sead3_drv_probe(struct platform_device *pdev)
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hcd->regs) {
-		pr_debug("ioremap failed");
-		ret = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
 		goto err1;
 	}
 
diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c
index 0c90a24..3565a30 100644
--- a/drivers/usb/host/ehci-sh.c
+++ b/drivers/usb/host/ehci-sh.c
@@ -118,10 +118,9 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (hcd->regs == NULL) {
-		dev_dbg(&pdev->dev, "error mapping memory\n");
-		ret = -ENXIO;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
 		goto fail_request_resource;
 	}
 
diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c
index 11695d5..7ecf709 100644
--- a/drivers/usb/host/ehci-vt8500.c
+++ b/drivers/usb/host/ehci-vt8500.c
@@ -16,6 +16,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 
@@ -96,10 +97,9 @@ static int vt8500_ehci_drv_probe(struct platform_device *pdev)
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hcd->regs) {
-		pr_debug("ioremap failed");
-		ret = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
 		goto err1;
 	}
 
diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
index 4f285e8..d845e3b 100644
--- a/drivers/usb/host/ehci-xilinx-of.c
+++ b/drivers/usb/host/ehci-xilinx-of.c
@@ -25,6 +25,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/signal.h>
 
 #include <linux/of.h>
@@ -159,10 +160,9 @@ static int ehci_hcd_xilinx_of_probe(struct platform_device *op)
 		goto err_irq;
 	}
 
-	hcd->regs = devm_request_and_ioremap(&op->dev, &res);
-	if (!hcd->regs) {
-		pr_err("%s: devm_request_and_ioremap failed\n", __FILE__);
-		rv = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&op->dev, &res);
+	if (IS_ERR(hcd->regs)) {
+		rv = PTR_ERR(hcd->regs);
 		goto err_irq;
 	}
 
diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c
index 2344040..f4988fb 100644
--- a/drivers/usb/host/ohci-nxp.c
+++ b/drivers/usb/host/ohci-nxp.c
@@ -306,10 +306,9 @@ static int usb_hcd_nxp_probe(struct platform_device *pdev)
 		goto out8;
 	}
 
-	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
-	if (!hcd->regs) {
-		dev_err(&pdev->dev, "Failed to devm_request_and_ioremap\n");
-		ret =  -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
 		goto out8;
 	}
 	hcd->rsrc_start = res->start;
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 084503b..c3e7287 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -13,6 +13,7 @@
  *
  * Licensed under the GNU/GPL. See COPYING for details.
  */
+#include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/usb/ohci_pdriver.h>
 
@@ -127,9 +128,9 @@ static int ohci_platform_probe(struct platform_device *dev)
 	hcd->rsrc_start = res_mem->start;
 	hcd->rsrc_len = resource_size(res_mem);
 
-	hcd->regs = devm_request_and_ioremap(&dev->dev, res_mem);
-	if (!hcd->regs) {
-		err = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+	if (IS_ERR(hcd->regs)) {
+		err = PTR_ERR(hcd->regs);
 		goto err_put_hcd;
 	}
 	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index ad0f552..e125770 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -351,10 +351,9 @@ static int usb_hcd_s3c2410_probe(const struct hc_driver *driver,
 	hcd->rsrc_start = dev->resource[0].start;
 	hcd->rsrc_len	= resource_size(&dev->resource[0]);
 
-	hcd->regs = devm_request_and_ioremap(&dev->dev, &dev->resource[0]);
-	if (!hcd->regs) {
-		dev_err(&dev->dev, "devm_request_and_ioremap failed\n");
-		retval = -ENOMEM;
+	hcd->regs = devm_ioremap_resource(&dev->dev, &dev->resource[0]);
+	if (IS_ERR(hcd->regs)) {
+		retval = PTR_ERR(hcd->regs);
 		goto err_put;
 	}
 
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index f7d764d..99f470d 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -500,10 +500,9 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
 	resources[0].end = resources[0].start + SZ_4 - 1;
 	resources[0].flags = IORESOURCE_MEM;
 
-	glue->usb_ctrl[id] = devm_request_and_ioremap(&pdev->dev, resources);
-	if (glue->usb_ctrl[id] == NULL) {
-		dev_err(dev, "Failed to obtain usb_ctrl%d memory\n", id);
-		ret = -ENODEV;
+	glue->usb_ctrl[id] = devm_ioremap_resource(&pdev->dev, resources);
+	if (IS_ERR(glue->usb_ctrl[id])) {
+		ret = PTR_ERR(glue->usb_ctrl[id]);
 		goto err0;
 	}
 
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index da00af4..acd5f9d 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -523,9 +523,7 @@ static int omap2430_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 
-	glue->control_otghs = devm_request_and_ioremap(&pdev->dev, res);
-	if (glue->control_otghs == NULL)
-		dev_dbg(&pdev->dev, "Failed to obtain control memory\n");
+	glue->control_otghs = devm_ioremap_resource(&pdev->dev, res);
 
 	if (np) {
 		pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c
index a67ffe2..a7d4ac5 100644
--- a/drivers/usb/otg/gpio_vbus.c
+++ b/drivers/usb/otg/gpio_vbus.c
@@ -409,17 +409,7 @@ static struct platform_driver gpio_vbus_driver = {
 	.remove  = __exit_p(gpio_vbus_remove),
 };
 
-static int __init gpio_vbus_init(void)
-{
-	return platform_driver_probe(&gpio_vbus_driver, gpio_vbus_probe);
-}
-module_init(gpio_vbus_init);
-
-static void __exit gpio_vbus_exit(void)
-{
-	platform_driver_unregister(&gpio_vbus_driver);
-}
-module_exit(gpio_vbus_exit);
+module_platform_driver_probe(gpio_vbus_driver, gpio_vbus_probe);
 
 MODULE_DESCRIPTION("simple GPIO controlled OTG transceiver driver");
 MODULE_AUTHOR("Philipp Zabel");
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index 3b9f0d9..749fbf4 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -1756,18 +1756,7 @@ static struct platform_driver msm_otg_driver = {
 	},
 };
 
-static int __init msm_otg_init(void)
-{
-	return platform_driver_probe(&msm_otg_driver, msm_otg_probe);
-}
-
-static void __exit msm_otg_exit(void)
-{
-	platform_driver_unregister(&msm_otg_driver);
-}
-
-module_init(msm_otg_init);
-module_exit(msm_otg_exit);
+module_platform_driver_probe(msm_otg_driver, msm_otg_probe);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("MSM USB transceiver driver");
diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
index 7630272..60df28a 100644
--- a/drivers/usb/otg/mxs-phy.c
+++ b/drivers/usb/otg/mxs-phy.c
@@ -115,9 +115,9 @@ static int mxs_phy_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);
 
 	clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
diff --git a/drivers/usb/phy/mv_u3d_phy.c b/drivers/usb/phy/mv_u3d_phy.c
index eaddbe3..9d85991 100644
--- a/drivers/usb/phy/mv_u3d_phy.c
+++ b/drivers/usb/phy/mv_u3d_phy.c
@@ -283,11 +283,9 @@ static int mv_u3d_phy_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	phy_base = devm_request_and_ioremap(dev, res);
-	if (!phy_base) {
-		dev_err(dev, "%s: register mapping failed\n", __func__);
-		return -ENXIO;
-	}
+	phy_base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(phy_base))
+		return PTR_ERR(phy_base);
 
 	mv_u3d_phy = devm_kzalloc(dev, sizeof(*mv_u3d_phy), GFP_KERNEL);
 	if (!mv_u3d_phy)
diff --git a/drivers/usb/phy/omap-usb2.c b/drivers/usb/phy/omap-usb2.c
index 26ae8f4..2fdb8ed 100644
--- a/drivers/usb/phy/omap-usb2.c
+++ b/drivers/usb/phy/omap-usb2.c
@@ -168,11 +168,9 @@ static int omap_usb2_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 
-	phy->control_dev = devm_request_and_ioremap(&pdev->dev, res);
-	if (phy->control_dev == NULL) {
-		dev_err(&pdev->dev, "Failed to obtain io memory\n");
-		return -ENXIO;
-	}
+	phy->control_dev = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(phy->control_dev))
+		return PTR_ERR(phy->control_dev);
 
 	phy->is_suspended	= 1;
 	omap_usb_phy_power(phy, 0);
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 38bce04..cfd2050 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -14,6 +14,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */
+#include <linux/err.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
@@ -443,11 +444,9 @@ static int usbhs_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	priv->base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!priv->base) {
-		dev_err(&pdev->dev, "ioremap error.\n");
-		return -ENOMEM;
-	}
+	priv->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
 
 	/*
 	 * care platform info