From 99ad5f6ec0cd776e34295ec9fc82bfb004c3fad5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Sat, 26 Sep 2020 23:32:40 +0200 Subject: regulator: print state at boot MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the initial state of the regulator shown when debugging. Signed-off-by: Michał Mirosław Link: https://lore.kernel.org/r/53c4f3d394d68f0989174f89e3b0882cebbbd787.1601155770.git.mirq-linux@rere.qmqm.pl Signed-off-by: Mark Brown --- drivers/regulator/core.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6ef99df1a7d2..42cffbe84080 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1111,10 +1111,15 @@ static void print_constraints(struct regulator_dev *rdev) if (constraints->valid_modes_mask & REGULATOR_MODE_IDLE) count += scnprintf(buf + count, len - count, "idle "); if (constraints->valid_modes_mask & REGULATOR_MODE_STANDBY) - count += scnprintf(buf + count, len - count, "standby"); + count += scnprintf(buf + count, len - count, "standby "); if (!count) - scnprintf(buf, len, "no parameters"); + count = scnprintf(buf, len, "no parameters"); + else + --count; + + count += scnprintf(buf + count, len - count, ", %s", + _regulator_is_enabled(rdev) ? "enabled" : "disabled"); rdev_dbg(rdev, "%s\n", buf); -- cgit v1.2.3 From 61aab5ad27d551f1535861e871dd9b03f5fbfd76 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Sat, 26 Sep 2020 23:32:40 +0200 Subject: regulator: print symbolic errors in kernel messages MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change all error-printing messages to include error name via %pe instead of numeric error or nothing. Signed-off-by: Michał Mirosław Link: https://lore.kernel.org/r/1dcf25f39188882eb56918a9aa281ab17b792aa5.1601155770.git.mirq-linux@rere.qmqm.pl Signed-off-by: Mark Brown --- drivers/regulator/core.c | 94 +++++++++++++++++++++++++----------------------- 1 file changed, 49 insertions(+), 45 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 42cffbe84080..ff8e99ca0306 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -964,7 +964,8 @@ 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); @@ -991,14 +992,15 @@ 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; @@ -1019,14 +1021,14 @@ 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; } } @@ -1034,7 +1036,7 @@ 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; } } @@ -1154,8 +1156,8 @@ 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; } @@ -1184,8 +1186,8 @@ 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; } } @@ -1334,7 +1336,7 @@ 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; } } @@ -1343,7 +1345,7 @@ 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; } } @@ -1356,7 +1358,7 @@ 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) { @@ -1371,7 +1373,7 @@ 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; } } @@ -1379,7 +1381,7 @@ 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; } } @@ -1387,7 +1389,7 @@ 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; } } @@ -1396,7 +1398,8 @@ 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; } } @@ -1407,7 +1410,7 @@ 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; } } @@ -1427,7 +1430,7 @@ 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; } @@ -1651,8 +1654,8 @@ 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 */ } } @@ -2440,7 +2443,7 @@ 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; } @@ -2629,7 +2632,7 @@ 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 */ @@ -2731,7 +2734,7 @@ 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); @@ -2798,7 +2801,7 @@ 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; @@ -2877,7 +2880,8 @@ 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); @@ -3402,7 +3406,7 @@ 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; } @@ -3554,8 +3558,8 @@ 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; } } @@ -3572,8 +3576,8 @@ 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; } @@ -4559,8 +4563,8 @@ 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); @@ -4618,8 +4622,8 @@ 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); } @@ -4655,12 +4659,12 @@ 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; @@ -5043,8 +5047,8 @@ 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); @@ -5088,7 +5092,7 @@ 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; } @@ -5251,8 +5255,8 @@ 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 */ @@ -5837,7 +5841,7 @@ 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 -- cgit v1.2.3 From aea6cb99703e17019e025aa71643b4d3e0a24413 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Sat, 26 Sep 2020 23:32:41 +0200 Subject: regulator: resolve supply after creating regulator MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When creating a new regulator its supply cannot create the sysfs link because the device is not yet published. Remove early supply resolving since it will be done later anyway. This makes the following error disappear and the symlinks get created instead. DCDC_REG1: supplied by VSYS VSYS: could not add device link regulator.3 err -2 Note: It doesn't fix the problem for bypassed regulators, though. Fixes: 45389c47526d ("regulator: core: Add early supply resolution for regulators") Signed-off-by: Michał Mirosław Link: https://lore.kernel.org/r/ba09e0a8617ffeeb25cb4affffe6f3149319cef8.1601155770.git.mirq-linux@rere.qmqm.pl Signed-off-by: Mark Brown --- drivers/regulator/core.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index ff8e99ca0306..9f704a6c4802 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -5280,15 +5280,20 @@ regulator_register(const struct regulator_desc *regulator_desc, else if (regulator_desc->supply_name) rdev->supply_name = regulator_desc->supply_name; - /* - * Attempt to resolve the regulator supply, if specified, - * but don't return an error if we fail because we will try - * to resolve it again later as more regulators are added. - */ - if (regulator_resolve_supply(rdev)) - rdev_dbg(rdev, "unable to resolve supply\n"); - ret = set_machine_constraints(rdev, constraints); + if (ret == -EPROBE_DEFER) { + /* Regulator might be in bypass mode and so needs its supply + * to set the constraints */ + /* FIXME: this currently triggers a chicken-and-egg problem + * when creating -SUPPLY symlink in sysfs to a regulator + * that is just being created */ + ret = regulator_resolve_supply(rdev); + if (!ret) + ret = set_machine_constraints(rdev, constraints); + else + rdev_dbg(rdev, "unable to resolve supply early: %pe\n", + ERR_PTR(ret)); + } if (ret < 0) goto wash; -- cgit v1.2.3