diff options
Diffstat (limited to 'drivers/pwm/pwm-sun4i.c')
| -rw-r--r-- | drivers/pwm/pwm-sun4i.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index e60dc7d6b591..6c5591ca868b 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -21,7 +21,6 @@ #include <linux/pwm.h> #include <linux/reset.h> #include <linux/slab.h> -#include <linux/spinlock.h> #include <linux/time.h> #define PWM_CTRL_REG 0x0 @@ -85,7 +84,6 @@ struct sun4i_pwm_chip { struct clk *clk; struct reset_control *rst; void __iomem *base; - spinlock_t ctrl_lock; const struct sun4i_pwm_data *data; }; @@ -258,7 +256,6 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, return ret; } - spin_lock(&sun4ichip->ctrl_lock); ctrl = sun4i_pwm_readl(sun4ichip, PWM_CTRL_REG); if (sun4ichip->data->has_direct_mod_clk_output) { @@ -266,7 +263,6 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, ctrl |= BIT_CH(PWM_BYPASS, pwm->hwpwm); /* We can skip other parameter */ sun4i_pwm_writel(sun4ichip, ctrl, PWM_CTRL_REG); - spin_unlock(&sun4ichip->ctrl_lock); return 0; } @@ -297,8 +293,6 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, sun4i_pwm_writel(sun4ichip, ctrl, PWM_CTRL_REG); - spin_unlock(&sun4ichip->ctrl_lock); - if (state->enabled) return 0; @@ -309,12 +303,10 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, else usleep_range(delay_us, delay_us * 2); - spin_lock(&sun4ichip->ctrl_lock); ctrl = sun4i_pwm_readl(sun4ichip, PWM_CTRL_REG); ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm); ctrl &= ~BIT_CH(PWM_EN, pwm->hwpwm); sun4i_pwm_writel(sun4ichip, ctrl, PWM_CTRL_REG); - spin_unlock(&sun4ichip->ctrl_lock); clk_disable_unprepare(sun4ichip->clk); @@ -456,8 +448,6 @@ static int sun4i_pwm_probe(struct platform_device *pdev) chip->ops = &sun4i_pwm_ops; - spin_lock_init(&sun4ichip->ctrl_lock); - ret = pwmchip_add(chip); if (ret < 0) { dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret); |