From 0c309ed17c50e7eeaf3c66102b475198064e80da Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Tue, 8 Sep 2020 19:57:07 +0900 Subject: [PATCH 1/2] PM / devfreq: Add timer type to devfreq_summary debugfs The commit 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode") supports the delayed timer but this commit missed the adding the timer type to devfreq_summary debugfs node. Add the timer type to devfreq_summary debugfs. Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode") Signed-off-by: Chanwoo Choi --- drivers/devfreq/devfreq.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 561d91b2d3bf..071b59fe84d2 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -1766,20 +1766,23 @@ static int devfreq_summary_show(struct seq_file *s, void *data) struct devfreq *p_devfreq = NULL; unsigned long cur_freq, min_freq, max_freq; unsigned int polling_ms; + unsigned int timer; - seq_printf(s, "%-30s %-30s %-15s %10s %12s %12s %12s\n", + seq_printf(s, "%-30s %-30s %-15s %-10s %10s %12s %12s %12s\n", "dev", "parent_dev", "governor", + "timer", "polling_ms", "cur_freq_Hz", "min_freq_Hz", "max_freq_Hz"); - seq_printf(s, "%30s %30s %15s %10s %12s %12s %12s\n", + seq_printf(s, "%30s %30s %15s %10s %10s %12s %12s %12s\n", "------------------------------", "------------------------------", "---------------", "----------", + "----------", "------------", "------------", "------------"); @@ -1803,13 +1806,15 @@ static int devfreq_summary_show(struct seq_file *s, void *data) cur_freq = devfreq->previous_freq; get_freq_range(devfreq, &min_freq, &max_freq); polling_ms = devfreq->profile->polling_ms; + timer = devfreq->profile->timer; mutex_unlock(&devfreq->lock); seq_printf(s, - "%-30s %-30s %-15s %10d %12ld %12ld %12ld\n", + "%-30s %-30s %-15s %-10s %10d %12ld %12ld %12ld\n", dev_name(&devfreq->dev), p_devfreq ? dev_name(&p_devfreq->dev) : "null", devfreq->governor_name, + polling_ms ? timer_name[timer] : "null", polling_ms, cur_freq, min_freq, From 6bf560766a8ef5afe4faa3244220cf5b3a934549 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 8 Sep 2020 10:25:57 +0300 Subject: [PATCH 2/2] PM / devfreq: tegra30: Disable clock on error in probe This error path needs to call clk_disable_unprepare(). Fixes: 7296443b900e ("PM / devfreq: tegra30: Handle possible round-rate error") Signed-off-by: Dan Carpenter Reviewed-by: Dmitry Osipenko Signed-off-by: Dan Carpenter Signed-off-by: Chanwoo Choi --- drivers/devfreq/tegra30-devfreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index e94a27804c20..dedd39de7367 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -836,7 +836,8 @@ static int tegra_devfreq_probe(struct platform_device *pdev) rate = clk_round_rate(tegra->emc_clock, ULONG_MAX); if (rate < 0) { dev_err(&pdev->dev, "Failed to round clock rate: %ld\n", rate); - return rate; + err = rate; + goto disable_clk; } tegra->max_freq = rate / KHZ; @@ -897,6 +898,7 @@ remove_opps: dev_pm_opp_remove_all_dynamic(&pdev->dev); reset_control_reset(tegra->reset); +disable_clk: clk_disable_unprepare(tegra->clock); return err;