diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c index 75e08a98d09b..889ea7a6ed63 100644 --- a/drivers/counter/stm32-timer-cnt.c +++ b/drivers/counter/stm32-timer-cnt.c @@ -24,7 +24,6 @@ struct stm32_timer_cnt { struct counter_device counter; struct regmap *regmap; struct clk *clk; - u32 ceiling; u32 max_arr; }; @@ -67,14 +66,15 @@ static int stm32_count_write(struct counter_device *counter, struct counter_count_write_value *val) { struct stm32_timer_cnt *const priv = counter->priv; - u32 cnt; + u32 cnt, ceiling; int err; err = counter_count_write_value_get(&cnt, COUNTER_COUNT_POSITION, val); if (err) return err; - if (cnt > priv->ceiling) + regmap_read(priv->regmap, TIM_ARR, &ceiling); + if (cnt > ceiling) return -EINVAL; return regmap_write(priv->regmap, TIM_CNT, cnt); @@ -136,10 +136,6 @@ static int stm32_count_function_set(struct counter_device *counter, regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0); - /* TIMx_ARR register shouldn't be buffered (ARPE=0) */ - regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_ARPE, 0); - regmap_write(priv->regmap, TIM_ARR, priv->ceiling); - regmap_update_bits(priv->regmap, TIM_SMCR, TIM_SMCR_SMS, sms); /* Make sure that registers are updated */ @@ -197,7 +193,6 @@ static ssize_t stm32_count_ceiling_write(struct counter_device *counter, regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_ARPE, 0); regmap_write(priv->regmap, TIM_ARR, ceiling); - priv->ceiling = ceiling; return len; } @@ -369,7 +364,6 @@ static int stm32_timer_cnt_probe(struct platform_device *pdev) priv->regmap = ddata->regmap; priv->clk = ddata->clk; - priv->ceiling = ddata->max_arr; priv->max_arr = ddata->max_arr; priv->counter.name = dev_name(dev);