From 892de7031e905f242ea4e851abe5f4f7222e7455 Mon Sep 17 00:00:00 2001 From: Jinjie Ruan Date: Mon, 28 Aug 2023 14:45:45 +0800 Subject: [PATCH] iio: adc: at91_adc: Use devm_clk_get_enabled() helper function The devm_clk_get_enabled() helper: - calls devm_clk_get() - calls clk_prepare_enable() and registers what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code. Signed-off-by: Jinjie Ruan Link: https://lore.kernel.org/r/20230828064546.2383857-3-ruanjinjie@huawei.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 38 +++++++++----------------------------- 1 file changed, 9 insertions(+), 29 deletions(-) diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 771ad5c4a1318..e5610722ce0b2 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -1089,31 +1089,18 @@ static int at91_adc_probe(struct platform_device *pdev) return ret; } - st->clk = devm_clk_get(&pdev->dev, "adc_clk"); + st->clk = devm_clk_get_enabled(&pdev->dev, "adc_clk"); if (IS_ERR(st->clk)) { - dev_err(&pdev->dev, "Failed to get the clock.\n"); - return PTR_ERR(st->clk); - } - - ret = clk_prepare_enable(st->clk); - if (ret) { dev_err(&pdev->dev, "Could not prepare or enable the clock.\n"); - return ret; + return PTR_ERR(st->clk); } - st->adc_clk = devm_clk_get(&pdev->dev, "adc_op_clk"); + st->adc_clk = devm_clk_get_enabled(&pdev->dev, "adc_op_clk"); if (IS_ERR(st->adc_clk)) { - dev_err(&pdev->dev, "Failed to get the ADC clock.\n"); - ret = PTR_ERR(st->adc_clk); - goto error_disable_clk; - } - - ret = clk_prepare_enable(st->adc_clk); - if (ret) { dev_err(&pdev->dev, "Could not prepare or enable the ADC clock.\n"); - goto error_disable_clk; + return PTR_ERR(st->adc_clk); } /* @@ -1132,8 +1119,7 @@ static int at91_adc_probe(struct platform_device *pdev) if (!st->startup_time) { dev_err(&pdev->dev, "No startup time available.\n"); - ret = -EINVAL; - goto error_disable_adc_clk; + return -EINVAL; } ticks = (*st->caps->calc_startup_ticks)(st->startup_time, adc_clk_khz); @@ -1161,7 +1147,7 @@ static int at91_adc_probe(struct platform_device *pdev) ret = at91_adc_channel_init(idev); if (ret < 0) { dev_err(&pdev->dev, "Couldn't initialize the channels.\n"); - goto error_disable_adc_clk; + return ret; } init_waitqueue_head(&st->wq_data_avail); @@ -1176,19 +1162,19 @@ static int at91_adc_probe(struct platform_device *pdev) ret = at91_adc_buffer_init(idev); if (ret < 0) { dev_err(&pdev->dev, "Couldn't initialize the buffer.\n"); - goto error_disable_adc_clk; + return ret; } ret = at91_adc_trigger_init(idev); if (ret < 0) { dev_err(&pdev->dev, "Couldn't setup the triggers.\n"); at91_adc_buffer_remove(idev); - goto error_disable_adc_clk; + return ret; } } else { ret = at91_ts_register(idev, pdev); if (ret) - goto error_disable_adc_clk; + return ret; at91_ts_hw_init(idev, adc_clk_khz); } @@ -1208,10 +1194,6 @@ error_iio_device_register: } else { at91_ts_unregister(st); } -error_disable_adc_clk: - clk_disable_unprepare(st->adc_clk); -error_disable_clk: - clk_disable_unprepare(st->clk); return ret; } @@ -1227,8 +1209,6 @@ static int at91_adc_remove(struct platform_device *pdev) } else { at91_ts_unregister(st); } - clk_disable_unprepare(st->adc_clk); - clk_disable_unprepare(st->clk); return 0; } -- 2.30.2