[PATCH 2/3] regulator: print symbolic errors in kernel messages

From: Michał Mirosław
Date: Sat Sep 26 2020 - 17:32:53 EST

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Previous message: Michał Mirosław: "[PATCH 0/3] regulator: debugging aids"
In reply to: Michał Mirosław: "[PATCH 3/3] regulator: resolve supply after creating regulator"
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Change all error-printing messages to include error name via %pe instead
of numeric error or nothing.

Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
---
drivers/regulator/core.c | 94 +++++++++++++++++++++-------------------
1 file changed, 49 insertions(+), 45 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index bf88d74f5401..6b56a22fd37f 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -967,7 +967,8 @@ static int drms_uA_update(struct regulator_dev *rdev)
/* set the optimum mode for our new total regulator load */
err = rdev->desc->ops->set_load(rdev, current_uA);
if (err < 0)
- rdev_err(rdev, "failed to set load %d\n", current_uA);
+ rdev_err(rdev, "failed to set load %d: %pe\n",
+ current_uA, ERR_PTR(err));
} else {
/* get output voltage */
output_uV = regulator_get_voltage_rdev(rdev);
@@ -994,14 +995,15 @@ static int drms_uA_update(struct regulator_dev *rdev)
/* check the new mode is allowed */
err = regulator_mode_constrain(rdev, &mode);
if (err < 0) {
- rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV\n",
- current_uA, input_uV, output_uV);
+ rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV: %pe\n",
+ current_uA, input_uV, output_uV, ERR_PTR(err));
return err;
}

err = rdev->desc->ops->set_mode(rdev, mode);
if (err < 0)
- rdev_err(rdev, "failed to set optimum mode %x\n", mode);
+ rdev_err(rdev, "failed to set optimum mode %x: %pe\n",
+ mode, ERR_PTR(err));
}

return err;
@@ -1022,14 +1024,14 @@ static int __suspend_set_state(struct regulator_dev *rdev,
ret = 0;

if (ret < 0) {
- rdev_err(rdev, "failed to enabled/disable\n");
+ rdev_err(rdev, "failed to enabled/disable: %pe\n", ERR_PTR(ret));
return ret;
}

if (rdev->desc->ops->set_suspend_voltage && rstate->uV > 0) {
ret = rdev->desc->ops->set_suspend_voltage(rdev, rstate->uV);
if (ret < 0) {
- rdev_err(rdev, "failed to set voltage\n");
+ rdev_err(rdev, "failed to set voltage: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1037,7 +1039,7 @@ static int __suspend_set_state(struct regulator_dev *rdev,
if (rdev->desc->ops->set_suspend_mode && rstate->mode > 0) {
ret = rdev->desc->ops->set_suspend_mode(rdev, rstate->mode);
if (ret < 0) {
- rdev_err(rdev, "failed to set mode\n");
+ rdev_err(rdev, "failed to set mode: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1157,8 +1159,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,

if (current_uV < 0) {
rdev_err(rdev,
- "failed to get the current voltage(%d)\n",
- current_uV);
+ "failed to get the current voltage: %pe\n",
+ ERR_PTR(current_uV));
return current_uV;
}

@@ -1187,8 +1189,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
rdev, target_min, target_max);
if (ret < 0) {
rdev_err(rdev,
- "failed to apply %d-%duV constraint(%d)\n",
- target_min, target_max, ret);
+ "failed to apply %d-%duV constraint: %pe\n",
+ target_min, target_max, ERR_PTR(ret));
return ret;
}
}
@@ -1337,7 +1339,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
ret = ops->set_input_current_limit(rdev,
rdev->constraints->ilim_uA);
if (ret < 0) {
- rdev_err(rdev, "failed to set input limit\n");
+ rdev_err(rdev, "failed to set input limit: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1346,7 +1348,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
if (rdev->constraints->initial_state) {
ret = suspend_set_initial_state(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to set suspend state\n");
+ rdev_err(rdev, "failed to set suspend state: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1359,7 +1361,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,

ret = ops->set_mode(rdev, rdev->constraints->initial_mode);
if (ret < 0) {
- rdev_err(rdev, "failed to set initial mode: %d\n", ret);
+ rdev_err(rdev, "failed to set initial mode: %pe\n", ERR_PTR(ret));
return ret;
}
} else if (rdev->constraints->system_load) {
@@ -1374,7 +1376,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
&& ops->set_ramp_delay) {
ret = ops->set_ramp_delay(rdev, rdev->constraints->ramp_delay);
if (ret < 0) {
- rdev_err(rdev, "failed to set ramp_delay\n");
+ rdev_err(rdev, "failed to set ramp_delay: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1382,7 +1384,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
if (rdev->constraints->pull_down && ops->set_pull_down) {
ret = ops->set_pull_down(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to set pull down\n");
+ rdev_err(rdev, "failed to set pull down: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1390,7 +1392,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
if (rdev->constraints->soft_start && ops->set_soft_start) {
ret = ops->set_soft_start(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to set soft start\n");
+ rdev_err(rdev, "failed to set soft start: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1399,7 +1401,8 @@ static int set_machine_constraints(struct regulator_dev *rdev,
&& ops->set_over_current_protection) {
ret = ops->set_over_current_protection(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to set over current protection\n");
+ rdev_err(rdev, "failed to set over current protection: %pe\n",
+ ERR_PTR(ret));
return ret;
}
}
@@ -1410,7 +1413,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,

ret = ops->set_active_discharge(rdev, ad_state);
if (ret < 0) {
- rdev_err(rdev, "failed to set active discharge\n");
+ rdev_err(rdev, "failed to set active discharge: %pe\n", ERR_PTR(ret));
return ret;
}
}
@@ -1430,7 +1433,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,

ret = _regulator_do_enable(rdev);
if (ret < 0 && ret != -EINVAL) {
- rdev_err(rdev, "failed to enable\n");
+ rdev_err(rdev, "failed to enable: %pe\n", ERR_PTR(ret));
return ret;
}

@@ -1654,8 +1657,8 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
err = sysfs_create_link_nowarn(&rdev->dev.kobj, &dev->kobj,
supply_name);
if (err) {
- rdev_dbg(rdev, "could not add device link %s err %d\n",
- dev->kobj.name, err);
+ rdev_dbg(rdev, "could not add device link %s: %pe\n",
+ dev->kobj.name, ERR_PTR(err));
/* non-fatal */
}
}
@@ -2443,7 +2446,7 @@ static int _regulator_do_enable(struct regulator_dev *rdev)
if (ret >= 0) {
delay = ret;
} else {
- rdev_warn(rdev, "enable_time() failed: %d\n", ret);
+ rdev_warn(rdev, "enable_time() failed: %pe\n", ERR_PTR(ret));
delay = 0;
}

@@ -2632,7 +2635,7 @@ static int _regulator_enable(struct regulator *regulator)
_notifier_call_chain(rdev, REGULATOR_EVENT_ENABLE,
NULL);
} else if (ret < 0) {
- rdev_err(rdev, "is_enabled() failed: %d\n", ret);
+ rdev_err(rdev, "is_enabled() failed: %pe\n", ERR_PTR(ret));
goto err_consumer_disable;
}
/* Fallthrough on positive return values - already enabled */
@@ -2734,7 +2737,7 @@ static int _regulator_disable(struct regulator *regulator)

ret = _regulator_do_disable(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to disable\n");
+ rdev_err(rdev, "failed to disable: %pe\n", ERR_PTR(ret));
_notifier_call_chain(rdev,
REGULATOR_EVENT_ABORT_DISABLE,
NULL);
@@ -2801,7 +2804,7 @@ static int _regulator_force_disable(struct regulator_dev *rdev)

ret = _regulator_do_disable(rdev);
if (ret < 0) {
- rdev_err(rdev, "failed to force disable\n");
+ rdev_err(rdev, "failed to force disable: %pe\n", ERR_PTR(ret));
_notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
REGULATOR_EVENT_ABORT_DISABLE, NULL);
return ret;
@@ -2880,7 +2883,8 @@ static void regulator_disable_work(struct work_struct *work)
for (i = 0; i < count; i++) {
ret = _regulator_disable(regulator);
if (ret != 0)
- rdev_err(rdev, "Deferred disable failed: %d\n", ret);
+ rdev_err(rdev, "Deferred disable failed: %pe\n",
+ ERR_PTR(ret));
}
}
WARN_ON(!total_count);
@@ -3405,7 +3409,7 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
}

if (delay < 0) {
- rdev_warn(rdev, "failed to get delay: %d\n", delay);
+ rdev_warn(rdev, "failed to get delay: %pe\n", ERR_PTR(delay));
delay = 0;
}

@@ -3557,8 +3561,8 @@ int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV,
ret = regulator_set_voltage_unlocked(rdev->supply,
best_supply_uV, INT_MAX, state);
if (ret) {
- dev_err(&rdev->dev, "Failed to increase supply voltage: %d\n",
- ret);
+ dev_err(&rdev->dev, "Failed to increase supply voltage: %pe\n",
+ ERR_PTR(ret));
goto out;
}
}
@@ -3575,8 +3579,8 @@ int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV,
ret = regulator_set_voltage_unlocked(rdev->supply,
best_supply_uV, INT_MAX, state);
if (ret)
- dev_warn(&rdev->dev, "Failed to decrease supply voltage: %d\n",
- ret);
+ dev_warn(&rdev->dev, "Failed to decrease supply voltage: %pe\n",
+ ERR_PTR(ret));
/* No need to fail here */
ret = 0;
}
@@ -4562,8 +4566,8 @@ int regulator_bulk_get(struct device *dev, int num_consumers,

err:
if (ret != -EPROBE_DEFER)
- dev_err(dev, "Failed to get supply '%s': %d\n",
- consumers[i].supply, ret);
+ dev_err(dev, "Failed to get supply '%s': %pe\n",
+ consumers[i].supply, ERR_PTR(ret));
else
dev_dbg(dev, "Failed to get supply '%s', deferring\n",
consumers[i].supply);
@@ -4621,8 +4625,8 @@ int regulator_bulk_enable(int num_consumers,
err:
for (i = 0; i < num_consumers; i++) {
if (consumers[i].ret < 0)
- pr_err("Failed to enable %s: %d\n", consumers[i].supply,
- consumers[i].ret);
+ pr_err("Failed to enable %s: %pe\n", consumers[i].supply,
+ ERR_PTR(consumers[i].ret));
else
regulator_disable(consumers[i].consumer);
}
@@ -4658,12 +4662,12 @@ int regulator_bulk_disable(int num_consumers,
return 0;

err:
- pr_err("Failed to disable %s: %d\n", consumers[i].supply, ret);
+ pr_err("Failed to disable %s: %pe\n", consumers[i].supply, ERR_PTR(ret));
for (++i; i < num_consumers; ++i) {
r = regulator_enable(consumers[i].consumer);
if (r != 0)
- pr_err("Failed to re-enable %s: %d\n",
- consumers[i].supply, r);
+ pr_err("Failed to re-enable %s: %pe\n",
+ consumers[i].supply, ERR_PTR(r));
}

return ret;
@@ -5042,8 +5046,8 @@ static void regulator_remove_coupling(struct regulator_dev *rdev)
if (coupler && coupler->detach_regulator) {
err = coupler->detach_regulator(coupler, rdev);
if (err)
- rdev_err(rdev, "failed to detach from coupler: %d\n",
- err);
+ rdev_err(rdev, "failed to detach from coupler: %pe\n",
+ ERR_PTR(err));
}

kfree(rdev->coupling_desc.coupled_rdevs);
@@ -5087,7 +5091,7 @@ static int regulator_init_coupling(struct regulator_dev *rdev)

if (IS_ERR(rdev->coupling_desc.coupler)) {
err = PTR_ERR(rdev->coupling_desc.coupler);
- rdev_err(rdev, "failed to get coupler: %d\n", err);
+ rdev_err(rdev, "failed to get coupler: %pe\n", ERR_PTR(err));
return err;
}

@@ -5250,8 +5254,8 @@ regulator_register(const struct regulator_desc *regulator_desc,
if (config->ena_gpiod) {
ret = regulator_ena_gpio_request(rdev, config);
if (ret != 0) {
- rdev_err(rdev, "Failed to request enable GPIO: %d\n",
- ret);
+ rdev_err(rdev, "Failed to request enable GPIO: %pe\n",
+ ERR_PTR(ret));
goto clean;
}
/* The regulator core took over the GPIO descriptor */
@@ -5836,7 +5840,7 @@ static int regulator_late_cleanup(struct device *dev, void *data)
rdev_info(rdev, "disabling\n");
ret = _regulator_do_disable(rdev);
if (ret != 0)
- rdev_err(rdev, "couldn't disable: %d\n", ret);
+ rdev_err(rdev, "couldn't disable: %pe\n", ERR_PTR(ret));
} else {
/* The intention is that in future we will
* assume that full constraints are provided
--
2.20.1

Next message: Dmitry Osipenko: "Re: [PATCH 5/5] iommu/tegra-smmu: Add pagetable mappings to debugfs"
Previous message: Michał Mirosław: "[PATCH 0/3] regulator: debugging aids"
In reply to: Michał Mirosław: "[PATCH 3/3] regulator: resolve supply after creating regulator"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]