From: Matthew Wilcox <willy@infradead.org>
Date: Thu, 25 Oct 2018 16:22:46 +0000 (-0400)
Subject: pwm: Convert to XArray
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a00f8ede6a75a827c66144c141ed48718df05635;p=users%2Fwilly%2Fxarray.git

pwm: Convert to XArray

Straightforward conversion.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
---

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index c3ab07ab31a96..810a64a9053d2 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -9,7 +9,7 @@
 #include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/pwm.h>
-#include <linux/radix-tree.h>
+#include <linux/xarray.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
@@ -27,11 +27,11 @@ static LIST_HEAD(pwm_lookup_list);
 static DEFINE_MUTEX(pwm_lock);
 static LIST_HEAD(pwm_chips);
 static DECLARE_BITMAP(allocated_pwms, MAX_PWMS);
-static RADIX_TREE(pwm_tree, GFP_KERNEL);
+static DEFINE_XARRAY(pwm_devs);
 
 static struct pwm_device *pwm_to_device(unsigned int pwm)
 {
-	return radix_tree_lookup(&pwm_tree, pwm);
+	return xa_load(&pwm_devs, pwm);
 }
 
 static int alloc_pwms(int pwm, unsigned int count)
@@ -64,7 +64,7 @@ static void free_pwms(struct pwm_chip *chip)
 	for (i = 0; i < chip->npwm; i++) {
 		struct pwm_device *pwm = &chip->pwms[i];
 
-		radix_tree_delete(&pwm_tree, pwm->pwm);
+		xa_erase(&pwm_devs, pwm->pwm);
 	}
 
 	bitmap_clear(allocated_pwms, chip->base, chip->npwm);
@@ -286,7 +286,7 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip,
 		if (chip->ops->get_state)
 			chip->ops->get_state(chip, pwm, &pwm->state);
 
-		radix_tree_insert(&pwm_tree, pwm->pwm, pwm);
+		xa_store(&pwm_devs, pwm->pwm, pwm, GFP_KERNEL);
 	}
 
 	bitmap_set(allocated_pwms, chip->base, chip->npwm);