1 files changed, 0 insertions, 116 deletions
diff --git a/target/linux/generic/patches-2.6.25/962-backport_gpiolib_dynamic_gpio_number_allocation.patch b/target/linux/generic/patches-2.6.25/962-backport_gpiolib_dynamic_gpio_number_allocation.patch
deleted file mode 100644
index 0960f6764d..0000000000
--- a/target/linux/generic/patches-2.6.25/962-backport_gpiolib_dynamic_gpio_number_allocation.patch
+++ /dev/null
@@ -1,116 +0,0 @@
-From: Anton Vorontsov <avorontsov@ru.mvista.com>
-Date: Mon, 28 Apr 2008 09:14:46 +0000 (-0700)
-Subject: gpiolib: dynamic gpio number allocation
-X-Git-Tag: v2.6.26-rc1~848
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8d0aab2f16c4fa170f32e7a74a52cd0122bbafef
-
-gpiolib: dynamic gpio number allocation
-
-If gpio_chip->base is negative during registration, gpiolib performs dynamic
-base allocation.  This is useful for devices that aren't always present, such
-as GPIOs on hotplugged devices rather than mainboards.  (This behavior was
-previously specified but not implemented.)
-
-To avoid using any numbers that may have been explicitly assigned but not yet
-registered, this dynamic allocation assigns GPIO numbers from the biggest
-number on down, instead of from the smallest on up.
-
-Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
-Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
----
-
---- a/drivers/gpio/gpiolib.c
-+++ b/drivers/gpio/gpiolib.c
-@@ -80,6 +80,33 @@ static inline struct gpio_chip *gpio_to_
- 	return gpio_desc[gpio].chip;
- }
- 
-+/* dynamic allocation of GPIOs, e.g. on a hotplugged device */
-+static int gpiochip_find_base(int ngpio)
-+{
-+	int i;
-+	int spare = 0;
-+	int base = -ENOSPC;
-+
-+	for (i = ARCH_NR_GPIOS - 1; i >= 0 ; i--) {
-+		struct gpio_chip *chip = gpio_desc[i].chip;
-+
-+		if (!chip) {
-+			spare++;
-+			if (spare == ngpio) {
-+				base = i;
-+				break;
-+			}
-+		} else {
-+			spare = 0;
-+			i -= chip->ngpio - 1;
-+		}
-+	}
-+
-+	if (gpio_is_valid(base))
-+		pr_debug("%s: found new base at %d\n", __func__, base);
-+	return base;
-+}
-+
- /**
-  * gpiochip_add() - register a gpio_chip
-  * @chip: the chip to register, with chip->base initialized
-@@ -88,38 +115,49 @@ static inline struct gpio_chip *gpio_to_
-  * Returns a negative errno if the chip can't be registered, such as
-  * because the chip->base is invalid or already associated with a
-  * different chip.  Otherwise it returns zero as a success code.
-+ *
-+ * If chip->base is negative, this requests dynamic assignment of
-+ * a range of valid GPIOs.
-  */
- int gpiochip_add(struct gpio_chip *chip)
- {
- 	unsigned long	flags;
- 	int		status = 0;
- 	unsigned	id;
-+	int		base = chip->base;
- 
--	/* NOTE chip->base negative is reserved to mean a request for
--	 * dynamic allocation.  We don't currently support that.
--	 */
--
--	if (chip->base < 0 || !gpio_is_valid(chip->base  + chip->ngpio)) {
-+	if ((!gpio_is_valid(base) || !gpio_is_valid(base + chip->ngpio))
-+			&& base >= 0) {
- 		status = -EINVAL;
- 		goto fail;
- 	}
- 
- 	spin_lock_irqsave(&gpio_lock, flags);
- 
-+	if (base < 0) {
-+		base = gpiochip_find_base(chip->ngpio);
-+		if (base < 0) {
-+			status = base;
-+			goto fail_unlock;
-+		}
-+		chip->base = base;
-+	}
-+
- 	/* these GPIO numbers must not be managed by another gpio_chip */
--	for (id = chip->base; id < chip->base + chip->ngpio; id++) {
-+	for (id = base; id < base + chip->ngpio; id++) {
- 		if (gpio_desc[id].chip != NULL) {
- 			status = -EBUSY;
- 			break;
- 		}
- 	}
- 	if (status == 0) {
--		for (id = chip->base; id < chip->base + chip->ngpio; id++) {
-+		for (id = base; id < base + chip->ngpio; id++) {
- 			gpio_desc[id].chip = chip;
- 			gpio_desc[id].flags = 0;
- 		}
- 	}
- 
-+fail_unlock:
- 	spin_unlock_irqrestore(&gpio_lock, flags);
- fail:
- 	/* failures here can mean systems won't boot... */