Merge tag 'gpio-v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Luinus Walleij:
 "Bulk GPIO changes for the v4.10 kernel cycle:

  Core changes:

   - Simplify threaded interrupt handling: instead of passing numbed
     parameters to gpiochip_irqchip_add_chained() we create a new call:
     gpiochip_irqchip_add_nested() so the two types are clearly
     semantically different. Also make sure that all nested chips call
     gpiochip_set_nested_irqchip() which is necessary for IRQ resend to
     work properly if it happens.

   - Return error on seek operations for the chardev.

   - Clamp values set as part of gpio[d]_direction_output() so that
     anything != 0 will be send down to the driver as "1" not the value
     passed in.

   - ACPI can now support naming of GPIO lines, hogs and holes in the
     GPIO lists.

  New drivers:

   - The SX150x driver was deemed unfit for the GPIO subsystem and was
     moved over to a combined GPIO+pinctrl driver in the pinctrl
     subsystem.

  New features:

   - Various cleanups to various drivers"

* tag 'gpio-v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (49 commits)
  gpio: merrifield: Implement gpio_get_direction callback
  gpio: merrifield: Add support for hardware debouncer
  gpio: chardev: Return error for seek operations
  gpio: arizona: Tidy up probe error path
  gpio: arizona: Remove pointless set of platform drvdata
  gpio: pl061: delete platform data handling
  gpio: pl061: move platform data into driver
  gpio: pl061: rename variable from chip to pl061
  gpio: pl061: rename state container struct
  gpio: pl061: use local state for parent IRQ storage
  gpio: set explicit nesting on drivers
  gpio: simplify adding threaded interrupts
  gpio: vf610: use builtin_platform_driver
  gpio: axp209: use correct register for GPIO input status
  gpio: stmpe: fix interrupt handling bug
  gpio: em: depnd on ARCH_SHMOBILE
  gpio: zx: depend on ARCH_ZX
  gpio: x86: update config dependencies for x86 specific hardware
  gpio: mb86s7x: use builtin_platform_driver
  gpio: etraxfs: use builtin_platform_driver
  ...

1 files changed, 4 insertions, 47 deletions

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 193f15d50bba..92b185f19232 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -226,51 +226,6 @@ static struct gpio_desc *of_parse_own_gpio(struct device_node *np,
 }
 
 /**
- * of_gpiochip_set_names() - set up the names of the lines
- * @chip: GPIO chip whose lines should be named, if possible
- */
-static void of_gpiochip_set_names(struct gpio_chip *gc)
-{
-	struct gpio_device *gdev = gc->gpiodev;
-	struct device_node *np = gc->of_node;
-	int i;
-	int nstrings;
-
-	nstrings = of_property_count_strings(np, "gpio-line-names");
-	if (nstrings <= 0)
-		/* Lines names not present */
-		return;
-
-	/* This is normally not what you want */
-	if (gdev->ngpio != nstrings)
-		dev_info(&gdev->dev, "gpio-line-names specifies %d line "
-			 "names but there are %d lines on the chip\n",
-			 nstrings, gdev->ngpio);
-
-	/*
-	 * Make sure to not index beyond the end of the number of descriptors
-	 * of the GPIO device.
-	 */
-	for (i = 0; i < gdev->ngpio; i++) {
-		const char *name;
-		int ret;
-
-		ret = of_property_read_string_index(np,
-						    "gpio-line-names",
-						    i,
-						    &name);
-		if (ret) {
-			if (ret != -ENODATA)
-                                dev_err(&gdev->dev,
-                                        "unable to name line %d: %d\n",
-                                        i, ret);
-			break;
-		}
-		gdev->descs[i].name = name;
-	}
-}
-
-/**
  * of_gpiochip_scan_gpios - Scan gpio-controller for gpio definitions
  * @chip:	gpio chip to act on
  *
@@ -296,8 +251,10 @@ static int of_gpiochip_scan_gpios(struct gpio_chip *chip)
 			continue;
 
 		ret = gpiod_hog(desc, name, lflags, dflags);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(np);
 			return ret;
+		}
 	}
 
 	return 0;
@@ -526,7 +483,7 @@ int of_gpiochip_add(struct gpio_chip *chip)
 
 	/* If the chip defines names itself, these take precedence */
 	if (!chip->names)
-		of_gpiochip_set_names(chip);
+		devprop_gpiochip_set_names(chip);
 
 	of_node_get(chip->of_node);