Driver core patches for 3.9-rc1

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
 
 If you need me to provide a merged tree to handle these resolutions,
 please let me know.
 
 Other than those patches, there's not much here, some minor fixes and
 updates.
 
 Signed-off-by: Greg Kroah-Hartman <[email protected]>
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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()
  ...

drivers/gpio/Kconfig

@@ -66,7 +66,7 @@ config DEBUG_GPIO
 
 config GPIO_SYSFS
 	bool "/sys/class/gpio/... (sysfs interface)"
-	depends on SYSFS && EXPERIMENTAL
+	depends on SYSFS
 	help
 	  Say Y here to add a sysfs interface for GPIOs.
 

drivers/gpio/gpio-mvebu.c

@@ -33,6 +33,7 @@
  *   interrupts.
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/gpio.h>
 #include <linux/irq.h>
@@ -544,11 +545,9 @@ 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");
-		return -ENOMEM;
-	}
+	mvchip->membase = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(mvchip->membase))
+		return PTR_ERR(mvchip->membase);
 
 	/* The Armada XP has a second range of registers for the
 	 * per-CPU registers */
@@ -559,11 +558,10 @@ 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");
-			return -ENOMEM;
-		}
+		mvchip->percpu_membase = devm_ioremap_resource(&pdev->dev,
+							       res);
+		if (IS_ERR(mvchip->percpu_membase)) 
+			return PTR_ERR(mvchip->percpu_membase);
 	}
 
 	/*

drivers/gpio/gpio-mxs.c

@@ -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;
 

drivers/gpio/gpio-spear-spics.c

@@ -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))

drivers/gpio/gpio-stp-xway.c

@@ -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;

drivers/gpio/gpio-tegra.c

@@ -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++) {

drivers/gpio/gpiolib.c

@@ -806,7 +806,7 @@ fail_unlock:
 }
 EXPORT_SYMBOL_GPL(gpio_export);
 
-static int match_export(struct device *dev, void *data)
+static int match_export(struct device *dev, const void *data)
 {
 	return dev_get_drvdata(dev) == data;
 }