Use the dev_err_probe() helper to log the errors on every error path in
the probe function and its sub-functions. This includes
* adding error messages where there was none
* converting over dev_err/dev_warn
* removing the top-level error message after mtk_cpu_dvfs_info_init() is
called, since every error path inside that function already logs the
error reason. This gets rid of the misleading error message when probe
is deferred:
mtk-cpufreq mtk-cpufreq: failed to initialize dvfs info for cpu0
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
---
drivers/cpufreq/mediatek-cpufreq.c | 66 ++++++++++++++++++--------------------
1 file changed, 31 insertions(+), 35 deletions(-)
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index 518606adf14e..b21425bb83be 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -487,7 +488,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
rate = clk_get_rate(info->inter_clk);
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &rate);
if (IS_ERR(opp)) {
- dev_err(cpu_dev, "cpu%d: failed to get intermediate opp\n", cpu);
+ dev_err_probe(cpu_dev, ret, "cpu%d: failed to get intermediate opp\n", cpu);
ret = PTR_ERR(opp);
goto out_disable_inter_clock;
}
@@ -501,7 +502,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
info->opp_nb.notifier_call = mtk_cpufreq_opp_notifier;
ret = dev_pm_opp_register_notifier(cpu_dev, &info->opp_nb);
if (ret) {
- dev_err(cpu_dev, "cpu%d: failed to register opp notifier\n", cpu);
+ dev_err_probe(cpu_dev, ret, "cpu%d: failed to register opp notifier\n", cpu);
goto out_disable_inter_clock;
}
@@ -629,11 +630,9 @@ static int mtk_cpufreq_probe(struct platform_device *pdev)
int cpu, ret;
data = dev_get_platdata(&pdev->dev);
- if (!data) {
- dev_err(&pdev->dev,
- "failed to get mtk cpufreq platform data\n");
- return -ENODEV;
- }
+ if (!data)
+ return dev_err_probe(&pdev->dev, -ENODEV,
+ "failed to get mtk cpufreq platform data\n");
for_each_possible_cpu(cpu) {
info = mtk_cpu_dvfs_info_lookup(cpu);
@@ -643,24 +642,21 @@ static int mtk_cpufreq_probe(struct platform_device *pdev)
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info) {
ret = -ENOMEM;
+ dev_err_probe(&pdev->dev, ret, "Failed to allocate dvfs_info\n");
goto release_dvfs_info_list;
}
info->soc_data = data;
ret = mtk_cpu_dvfs_info_init(info, cpu);
- if (ret) {
- dev_err(&pdev->dev,
- "failed to initialize dvfs info for cpu%d\n",
- cpu);
+ if (ret)
goto release_dvfs_info_list;
- }
list_add(&info->list_head, &dvfs_info_list);
}
ret = cpufreq_register_driver(&mtk_cpufreq_driver);
if (ret) {
- dev_err(&pdev->dev, "failed to register mtk cpufreq driver\n");
+ dev_err_probe(&pdev->dev, ret, "failed to register mtk cpufreq driver\n");
goto release_dvfs_info_list;
}
---
base-commit: 0fc4bfab2cd45f9acb86c4f04b5191e114e901ed
change-id: 20240627-mtk-cpufreq-dvfs-fail-init-err-0a662ca72de2
Best regards,