2.6.26: fix gpio sysfs patch, forgot to refresh it

SVN-Revision: 12529

target/linux/generic-2.6/patches-2.6.26/980-backport_gpio_sysfs_support.patch

@@ -281,7 +281,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  
  #ifdef CONFIG_DEBUG_FS
  	const char		*label;
-@@ -151,6 +156,482 @@
+@@ -151,6 +156,486 @@
  	return ret;
  }
  
@@ -558,7 +558,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 +	int			status = -EINVAL;
 +
 +	/* can't export until sysfs is available ... */
-+	if (!gpio_class.p) {
++	if (!gpio_class.subsys.kobj.ktype) {
 +		pr_debug("%s: called too early!\n", __func__);
 +		return -ENOENT;
 +	}
@@ -583,8 +583,9 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 +		struct device	*dev;
 +
 +		dev = device_create(&gpio_class, desc->chip->dev, MKDEV(0, 0),
-+					desc, "gpio%d", gpio);
++					"gpio%d", gpio);
 +		if (dev) {
++			dev_set_drvdata(dev, desc);
 +			if (direction_may_change)
 +				status = sysfs_create_group(&dev->kobj,
 +						&gpio_attr_group);
@@ -634,8 +635,9 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 +	if (test_bit(FLAG_EXPORT, &desc->flags)) {
 +		struct device	*dev = NULL;
 +
-+		dev = class_find_device(&gpio_class, NULL, desc, match_export);
++		dev = class_find_device(&gpio_class, desc, match_export);
 +		if (dev) {
++			dev_set_drvdata(dev, NULL);
 +			clear_bit(FLAG_EXPORT, &desc->flags);
 +			put_device(dev);
 +			device_unregister(dev);
@@ -661,14 +663,15 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 +	 * export this later, in gpiolib_sysfs_init() ... here we just
 +	 * verify that _some_ field of gpio_class got initialized.
 +	 */
-+	if (!gpio_class.p)
++	if (!gpio_class.subsys.kobj.ktype)
 +		return 0;
 +
 +	/* use chip->base for the ID; it's already known to be unique */
 +	mutex_lock(&sysfs_lock);
-+	dev = device_create(&gpio_class, chip->dev, MKDEV(0, 0), chip,
++	dev = device_create(&gpio_class, chip->dev, MKDEV(0, 0),
 +				"gpiochip%d", chip->base);
 +	if (dev) {
++		dev_set_drvdata(dev, chip);
 +		status = sysfs_create_group(&dev->kobj,
 +				&gpiochip_attr_group);
 +	} else
@@ -699,8 +702,9 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 +	struct device		*dev;
 +
 +	mutex_lock(&sysfs_lock);
-+	dev = class_find_device(&gpio_class, NULL, chip, match_export);
++	dev = class_find_device(&gpio_class, chip, match_export);
 +	if (dev) {
++		dev_set_drvdata(dev, NULL);
 +		put_device(dev);
 +		device_unregister(dev);
 +		chip->exported = 0;
@@ -764,7 +768,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  /**
   * gpiochip_add() - register a gpio_chip
   * @chip: the chip to register, with chip->base initialized
-@@ -160,6 +641,11 @@
+@@ -160,6 +645,11 @@
   * because the chip->base is invalid or already associated with a
   * different chip.  Otherwise it returns zero as a success code.
   *
@@ -776,7 +780,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
   * If chip->base is negative, this requests dynamic assignment of
   * a range of valid GPIOs.
   */
-@@ -182,7 +668,7 @@
+@@ -182,7 +672,7 @@
  		base = gpiochip_find_base(chip->ngpio);
  		if (base < 0) {
  			status = base;
@@ -785,7 +789,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  		}
  		chip->base = base;
  	}
-@@ -197,12 +683,23 @@
+@@ -197,12 +687,23 @@
  	if (status == 0) {
  		for (id = base; id < base + chip->ngpio; id++) {
  			gpio_desc[id].chip = chip;
@@ -811,7 +815,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  fail:
  	/* failures here can mean systems won't boot... */
  	if (status)
-@@ -239,6 +736,10 @@
+@@ -239,6 +740,10 @@
  	}
  
  	spin_unlock_irqrestore(&gpio_lock, flags);
@@ -822,7 +826,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  	return status;
  }
  EXPORT_SYMBOL_GPL(gpiochip_remove);
-@@ -296,6 +797,8 @@
+@@ -296,6 +801,8 @@
  		return;
  	}
  
@@ -831,7 +835,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  	spin_lock_irqsave(&gpio_lock, flags);
  
  	desc = &gpio_desc[gpio];
-@@ -534,10 +1037,6 @@
+@@ -534,10 +1041,6 @@
  
  #ifdef CONFIG_DEBUG_FS
  
@@ -842,7 +846,7 @@ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  static void gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip)
  {
  	unsigned		i;
-@@ -614,17 +1113,28 @@
+@@ -614,17 +1117,28 @@
  	/* REVISIT this isn't locked against gpio_chip removal ... */
  
  	for (gpio = 0; gpio_is_valid(gpio); gpio++) {