[PATCH RFC v3 1/3] pinctrl: remove pinctrl_remove_gpio_range

[Dong Aisheng]

From: Dong Aisheng <dong.aisheng at linaro.org>

The gpio ranges will be automatically removed when the pinctrl
driver is unregistered.

Signed-off-by: Dong Aisheng <dong.aisheng at linaro.org>
---
I greped the lastes torvalds tree, it seems no other pinctrl drivers
are using pinctrl_remove_gpio_range. It may be safe to merge this
through pinctrl tree.
---
 drivers/pinctrl/core.c          |   19 +++++--------------
 drivers/pinctrl/pinctrl-tegra.c |    1 -
 drivers/pinctrl/pinctrl-u300.c  |    2 --
 include/linux/pinctrl/pinctrl.h |    2 --
 4 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index c3b331b..e16529e 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -333,20 +333,6 @@ void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev,
 EXPORT_SYMBOL_GPL(pinctrl_add_gpio_range);
 
 /**
- * pinctrl_remove_gpio_range() - remove a range of GPIOs fro a pin controller
- * @pctldev: pin controller device to remove the range from
- * @range: the GPIO range to remove
- */
-void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
-			       struct pinctrl_gpio_range *range)
-{
-	mutex_lock(&pinctrl_mutex);
-	list_del(&range->node);
-	mutex_unlock(&pinctrl_mutex);
-}
-EXPORT_SYMBOL_GPL(pinctrl_remove_gpio_range);
-
-/**
  * pinctrl_get_group_selector() - returns the group selector for a group
  * @pctldev: the pin controller handling the group
  * @pin_group: the pin group to look up
@@ -1485,6 +1471,7 @@ EXPORT_SYMBOL_GPL(pinctrl_register);
  */
 void pinctrl_unregister(struct pinctrl_dev *pctldev)
 {
+	struct pinctrl_gpio_range *range, *n;
 	if (pctldev == NULL)
 		return;
 
@@ -1500,6 +1487,10 @@ void pinctrl_unregister(struct pinctrl_dev *pctldev)
 	/* Destroy descriptor tree */
 	pinctrl_free_pindescs(pctldev, pctldev->desc->pins,
 			      pctldev->desc->npins);
+	/* remove gpio ranges map */
+	list_for_each_entry_safe(range, n, &pctldev->gpio_ranges, node)
+		list_del(&range->node);
+
 	kfree(pctldev);
 
 	mutex_unlock(&pinctrl_mutex);
diff --git a/drivers/pinctrl/pinctrl-tegra.c b/drivers/pinctrl/pinctrl-tegra.c
index 2c98fba..47bd452 100644
--- a/drivers/pinctrl/pinctrl-tegra.c
+++ b/drivers/pinctrl/pinctrl-tegra.c
@@ -702,7 +702,6 @@ static int __devexit tegra_pinctrl_remove(struct platform_device *pdev)
 {
 	struct tegra_pmx *pmx = platform_get_drvdata(pdev);
 
-	pinctrl_remove_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range);
 	pinctrl_unregister(pmx->pctl);
 
 	return 0;
diff --git a/drivers/pinctrl/pinctrl-u300.c b/drivers/pinctrl/pinctrl-u300.c
index 05d0299..10de43c 100644
--- a/drivers/pinctrl/pinctrl-u300.c
+++ b/drivers/pinctrl/pinctrl-u300.c
@@ -1177,8 +1177,6 @@ static int __devexit u300_pmx_remove(struct platform_device *pdev)
 	struct u300_pmx *upmx = platform_get_drvdata(pdev);
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(u300_gpio_ranges); i++)
-		pinctrl_remove_gpio_range(upmx->pctl, &u300_gpio_ranges[i]);
 	pinctrl_unregister(upmx->pctl);
 	iounmap(upmx->virtbase);
 	release_mem_region(upmx->phybase, upmx->physize);
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index 3b894a6..170a588 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -131,8 +131,6 @@ extern void pinctrl_unregister(struct pinctrl_dev *pctldev);
 extern bool pin_is_valid(struct pinctrl_dev *pctldev, int pin);
 extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev,
 				struct pinctrl_gpio_range *range);
-extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
-				struct pinctrl_gpio_range *range);
 extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev);
 extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev);
 #else
-- 
1.7.0.4