From 247ee6c780406513c6031a7f4ea41f1648b03295 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 13 Apr 2023 14:25:48 +0200 Subject: [PATCH] pwm: Remove unused radix tree MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The radix tree's only use was to map PWM channels to the global number space. With that number space gone, the radix tree is now unused, so it can simply be removed. Acked-by: Uwe Kleine-König Signed-off-by: Thierry Reding --- drivers/pwm/core.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 9ce85c6..3daccea 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -28,12 +28,11 @@ static DEFINE_MUTEX(pwm_lookup_lock); static LIST_HEAD(pwm_lookup_list); -/* protects access to pwm_chips, allocated_pwms, and pwm_tree */ +/* protects access to pwm_chips and allocated_pwms */ static DEFINE_MUTEX(pwm_lock); static LIST_HEAD(pwm_chips); static DECLARE_BITMAP(allocated_pwms, MAX_PWMS); -static RADIX_TREE(pwm_tree, GFP_KERNEL); /* Called with pwm_lock held */ static int alloc_pwms(unsigned int count) @@ -54,14 +53,6 @@ static int alloc_pwms(unsigned int count) /* Called with pwm_lock held */ static void free_pwms(struct pwm_chip *chip) { - unsigned int i; - - for (i = 0; i < chip->npwm; i++) { - struct pwm_device *pwm = &chip->pwms[i]; - - radix_tree_delete(&pwm_tree, pwm->pwm); - } - bitmap_clear(allocated_pwms, chip->base, chip->npwm); kfree(chip->pwms); @@ -302,8 +293,6 @@ int pwmchip_add(struct pwm_chip *chip) pwm->chip = chip; pwm->pwm = chip->base + i; pwm->hwpwm = i; - - radix_tree_insert(&pwm_tree, pwm->pwm, pwm); } list_add(&chip->list, &pwm_chips); -- 2.7.4