From: Mark Brown broonie@linaro.org
Many regulator drivers have a remove function that consists solely of calling regulator_unregister() so provide a devm_regulator_register() in order to allow this repeated code to be removed and help eliminate error handling code.
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/core.c | 66 ++++++++++++++++++++++++++++++++++++++++ include/linux/regulator/driver.h | 5 +++ 2 files changed, 71 insertions(+)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index a01b8b3..5f995d2 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3492,6 +3492,44 @@ clean: } EXPORT_SYMBOL_GPL(regulator_register);
+static void devm_rdev_release(struct device *dev, void *res) +{ + regulator_unregister(*(struct regulator_dev **)res); +} + +/** + * devm_regulator_register - Resource managed regulator_register() + * @regulator_desc: regulator to register + * @config: runtime configuration for regulator + * + * Called by regulator drivers to register a regulator. Returns a + * valid pointer to struct regulator_dev on success or an ERR_PTR() on + * error. The regulator will automaticall be released when the device + * is unbound. + */ +struct regulator_dev *devm_regulator_register(struct device *dev, + const struct regulator_desc *regulator_desc, + const struct regulator_config *config) +{ + struct regulator_dev **ptr, *rdev; + + ptr = devres_alloc(devm_rdev_release, sizeof(*ptr), + GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + rdev = regulator_register(regulator_desc, config); + if (!IS_ERR(rdev)) { + *ptr = rdev; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return rdev; +} +EXPORT_SYMBOL_GPL(devm_regulator_register); + /** * regulator_unregister - unregister regulator * @rdev: regulator to unregister @@ -3521,6 +3559,34 @@ void regulator_unregister(struct regulator_dev *rdev) } EXPORT_SYMBOL_GPL(regulator_unregister);
+static int devm_rdev_match(struct device *dev, void *res, void *data) +{ + struct regulator_dev **r = res; + if (!r || !*r) { + WARN_ON(!r || !*r); + return 0; + } + return *r == data; +} + +/** + * devm_regulator_unregister - Resource managed regulator_unregister() + * @regulator: regulator to free + * + * Unregister a regulator registered with devm_regulator_register(). + * Normally this function will not need to be called and the resource + * management code will ensure that the resource is freed. + */ +void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev) +{ + int rc; + + rc = devres_release(dev, devm_rdev_release, devm_rdev_match, rdev); + if (rc != 0) + WARN_ON(rc); +} +EXPORT_SYMBOL_GPL(devm_regulator_unregister); + /** * regulator_suspend_prepare - prepare regulators for system wide suspend * @state: system suspend state diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 67e13aa..8474c7f 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -334,7 +334,12 @@ struct regulator_dev { struct regulator_dev * regulator_register(const struct regulator_desc *regulator_desc, const struct regulator_config *config); +struct regulator_dev * +devm_regulator_register(struct device *dev, + const struct regulator_desc *regulator_desc, + const struct regulator_config *config); void regulator_unregister(struct regulator_dev *rdev); +void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev);
int regulator_notifier_call_chain(struct regulator_dev *rdev, unsigned long event, void *data);
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/arizona-ldo1.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c index 81d8681..4f6c205 100644 --- a/drivers/regulator/arizona-ldo1.c +++ b/drivers/regulator/arizona-ldo1.c @@ -226,7 +226,7 @@ static int arizona_ldo1_probe(struct platform_device *pdev) else config.init_data = &ldo1->init_data;
- ldo1->regulator = regulator_register(desc, &config); + ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config); if (IS_ERR(ldo1->regulator)) { ret = PTR_ERR(ldo1->regulator); dev_err(arizona->dev, "Failed to register LDO1 supply: %d\n", @@ -239,18 +239,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev) return 0; }
-static int arizona_ldo1_remove(struct platform_device *pdev) -{ - struct arizona_ldo1 *ldo1 = platform_get_drvdata(pdev); - - regulator_unregister(ldo1->regulator); - - return 0; -} - static struct platform_driver arizona_ldo1_driver = { .probe = arizona_ldo1_probe, - .remove = arizona_ldo1_remove, .driver = { .name = "arizona-ldo1", .owner = THIS_MODULE,
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/arizona-micsupp.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c index e87536b..724706a 100644 --- a/drivers/regulator/arizona-micsupp.c +++ b/drivers/regulator/arizona-micsupp.c @@ -225,7 +225,9 @@ static int arizona_micsupp_probe(struct platform_device *pdev) regmap_update_bits(arizona->regmap, ARIZONA_MIC_CHARGE_PUMP_1, ARIZONA_CPMIC_BYPASS, 0);
- micsupp->regulator = regulator_register(&arizona_micsupp, &config); + micsupp->regulator = devm_regulator_register(&pdev->dev, + &arizona_micsupp, + &config); if (IS_ERR(micsupp->regulator)) { ret = PTR_ERR(micsupp->regulator); dev_err(arizona->dev, "Failed to register mic supply: %d\n", @@ -238,18 +240,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev) return 0; }
-static int arizona_micsupp_remove(struct platform_device *pdev) -{ - struct arizona_micsupp *micsupp = platform_get_drvdata(pdev); - - regulator_unregister(micsupp->regulator); - - return 0; -} - static struct platform_driver arizona_micsupp_driver = { .probe = arizona_micsupp_probe, - .remove = arizona_micsupp_remove, .driver = { .name = "arizona-micsupp", .owner = THIS_MODULE,
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/s2mps11.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-)
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c index 5eba2ff..d7c241e 100644 --- a/drivers/regulator/s2mps11.c +++ b/drivers/regulator/s2mps11.c @@ -453,28 +453,11 @@ common_reg: ret = PTR_ERR(s2mps11->rdev[i]); dev_err(&pdev->dev, "regulator init failed for %d\n", i); - s2mps11->rdev[i] = NULL; - goto err; + return ret; } }
return 0; -err: - for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) - regulator_unregister(s2mps11->rdev[i]); - - return ret; -} - -static int s2mps11_pmic_remove(struct platform_device *pdev) -{ - struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev); - int i; - - for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) - regulator_unregister(s2mps11->rdev[i]); - - return 0; }
static const struct platform_device_id s2mps11_pmic_id[] = { @@ -489,7 +472,6 @@ static struct platform_driver s2mps11_pmic_driver = { .owner = THIS_MODULE, }, .probe = s2mps11_pmic_probe, - .remove = s2mps11_pmic_remove, .id_table = s2mps11_pmic_id, };
On Saturday, August 31, 2013 8:29 AM, Mark Brown wrote:
Subject: [PATCH 04/11] regulator: s2mps11: Convert to devm_regulator_register()
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org
Acked-by: Sangbeom Kim sbkim73@samsung.com
Thanks, Sangbeom.
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/s5m8767.c | 24 +++--------------------- 1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c index c24448b..2297fdf 100644 --- a/drivers/regulator/s5m8767.c +++ b/drivers/regulator/s5m8767.c @@ -910,34 +910,17 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) config.regmap = iodev->regmap; config.of_node = pdata->regulators[i].reg_node;
- rdev[i] = regulator_register(®ulators[id], &config); + rdev[i] = devm_regulator_register(&pdev->dev, ®ulators[id], + &config); if (IS_ERR(rdev[i])) { ret = PTR_ERR(rdev[i]); dev_err(s5m8767->dev, "regulator init failed for %d\n", id); - rdev[i] = NULL; - goto err; + return ret; } }
return 0; -err: - for (i = 0; i < s5m8767->num_regulators; i++) - regulator_unregister(rdev[i]); - - return ret; -} - -static int s5m8767_pmic_remove(struct platform_device *pdev) -{ - struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev); - struct regulator_dev **rdev = s5m8767->rdev; - int i; - - for (i = 0; i < s5m8767->num_regulators; i++) - regulator_unregister(rdev[i]); - - return 0; }
static const struct platform_device_id s5m8767_pmic_id[] = { @@ -952,7 +935,6 @@ static struct platform_driver s5m8767_pmic_driver = { .owner = THIS_MODULE, }, .probe = s5m8767_pmic_probe, - .remove = s5m8767_pmic_remove, .id_table = s5m8767_pmic_id, };
On Saturday, August 31, 2013 8:29 AM, Mark Brown wrote:
Subject: [PATCH 05/11] regulator: s5m8767: Covert to devm_regulator_register()
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org
Acked-by: Sangbeom Kim sbkim73@samsung.com
Thanks, Sangbeom.
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/wm831x-dcdc.c | 66 ++++++++--------------------------------- 1 file changed, 12 insertions(+), 54 deletions(-)
diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c index aca2fcb..6823e6f 100644 --- a/drivers/regulator/wm831x-dcdc.c +++ b/drivers/regulator/wm831x-dcdc.c @@ -523,7 +523,8 @@ static int wm831x_buckv_probe(struct platform_device *pdev) config.driver_data = dcdc; config.regmap = wm831x->regmap;
- dcdc->regulator = regulator_register(&dcdc->desc, &config); + dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, + &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", @@ -538,7 +539,7 @@ static int wm831x_buckv_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC")); @@ -548,31 +549,19 @@ static int wm831x_buckv_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, dcdc);
return 0;
-err_regulator: - regulator_unregister(dcdc->regulator); err: return ret; }
-static int wm831x_buckv_remove(struct platform_device *pdev) -{ - struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev); - - regulator_unregister(dcdc->regulator); - - return 0; -} - static struct platform_driver wm831x_buckv_driver = { .probe = wm831x_buckv_probe, - .remove = wm831x_buckv_remove, .driver = { .name = "wm831x-buckv", .owner = THIS_MODULE, @@ -673,7 +662,8 @@ static int wm831x_buckp_probe(struct platform_device *pdev) config.driver_data = dcdc; config.regmap = wm831x->regmap;
- dcdc->regulator = regulator_register(&dcdc->desc, &config); + dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, + &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", @@ -688,31 +678,19 @@ static int wm831x_buckp_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, dcdc);
return 0;
-err_regulator: - regulator_unregister(dcdc->regulator); err: return ret; }
-static int wm831x_buckp_remove(struct platform_device *pdev) -{ - struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev); - - regulator_unregister(dcdc->regulator); - - return 0; -} - static struct platform_driver wm831x_buckp_driver = { .probe = wm831x_buckp_probe, - .remove = wm831x_buckp_remove, .driver = { .name = "wm831x-buckp", .owner = THIS_MODULE, @@ -804,7 +782,8 @@ static int wm831x_boostp_probe(struct platform_device *pdev) config.driver_data = dcdc; config.regmap = wm831x->regmap;
- dcdc->regulator = regulator_register(&dcdc->desc, &config); + dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, + &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n", @@ -820,31 +799,19 @@ static int wm831x_boostp_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, dcdc);
return 0;
-err_regulator: - regulator_unregister(dcdc->regulator); err: return ret; }
-static int wm831x_boostp_remove(struct platform_device *pdev) -{ - struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev); - - regulator_unregister(dcdc->regulator); - - return 0; -} - static struct platform_driver wm831x_boostp_driver = { .probe = wm831x_boostp_probe, - .remove = wm831x_boostp_remove, .driver = { .name = "wm831x-boostp", .owner = THIS_MODULE, @@ -904,7 +871,8 @@ static int wm831x_epe_probe(struct platform_device *pdev) config.driver_data = dcdc; config.regmap = wm831x->regmap;
- dcdc->regulator = regulator_register(&dcdc->desc, &config); + dcdc->regulator = devm_regulator_register(&pdev->dev, &dcdc->desc, + &config); if (IS_ERR(dcdc->regulator)) { ret = PTR_ERR(dcdc->regulator); dev_err(wm831x->dev, "Failed to register EPE%d: %d\n", @@ -920,18 +888,8 @@ err: return ret; }
-static int wm831x_epe_remove(struct platform_device *pdev) -{ - struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev); - - regulator_unregister(dcdc->regulator); - - return 0; -} - static struct platform_driver wm831x_epe_driver = { .probe = wm831x_epe_probe, - .remove = wm831x_epe_remove, .driver = { .name = "wm831x-epe", .owner = THIS_MODULE,
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/wm831x-isink.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/regulator/wm831x-isink.c b/drivers/regulator/wm831x-isink.c index 841cb52..0339b88 100644 --- a/drivers/regulator/wm831x-isink.c +++ b/drivers/regulator/wm831x-isink.c @@ -194,7 +194,8 @@ static int wm831x_isink_probe(struct platform_device *pdev) config.init_data = pdata->isink[id]; config.driver_data = isink;
- isink->regulator = regulator_register(&isink->desc, &config); + isink->regulator = devm_regulator_register(&pdev->dev, &isink->desc, + &config); if (IS_ERR(isink->regulator)) { ret = PTR_ERR(isink->regulator); dev_err(wm831x->dev, "Failed to register ISINK%d: %d\n", @@ -210,31 +211,19 @@ static int wm831x_isink_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request ISINK IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, isink);
return 0;
-err_regulator: - regulator_unregister(isink->regulator); err: return ret; }
-static int wm831x_isink_remove(struct platform_device *pdev) -{ - struct wm831x_isink *isink = platform_get_drvdata(pdev); - - regulator_unregister(isink->regulator); - - return 0; -} - static struct platform_driver wm831x_isink_driver = { .probe = wm831x_isink_probe, - .remove = wm831x_isink_remove, .driver = { .name = "wm831x-isink", .owner = THIS_MODULE,
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/wm831x-ldo.c | 47 +++++++----------------------------------- 1 file changed, 8 insertions(+), 39 deletions(-)
diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c index 5570f3e..2be72fe 100644 --- a/drivers/regulator/wm831x-ldo.c +++ b/drivers/regulator/wm831x-ldo.c @@ -279,7 +279,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev) config.driver_data = ldo; config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config); + ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, + &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", @@ -295,31 +296,19 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, ldo);
return 0;
-err_regulator: - regulator_unregister(ldo->regulator); err: return ret; }
-static int wm831x_gp_ldo_remove(struct platform_device *pdev) -{ - struct wm831x_ldo *ldo = platform_get_drvdata(pdev); - - regulator_unregister(ldo->regulator); - - return 0; -} - static struct platform_driver wm831x_gp_ldo_driver = { .probe = wm831x_gp_ldo_probe, - .remove = wm831x_gp_ldo_remove, .driver = { .name = "wm831x-ldo", .owner = THIS_MODULE, @@ -504,7 +493,8 @@ static int wm831x_aldo_probe(struct platform_device *pdev) config.driver_data = ldo; config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config); + ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, + &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", @@ -519,31 +509,19 @@ static int wm831x_aldo_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", irq, ret); - goto err_regulator; + goto err; }
platform_set_drvdata(pdev, ldo);
return 0;
-err_regulator: - regulator_unregister(ldo->regulator); err: return ret; }
-static int wm831x_aldo_remove(struct platform_device *pdev) -{ - struct wm831x_ldo *ldo = platform_get_drvdata(pdev); - - regulator_unregister(ldo->regulator); - - return 0; -} - static struct platform_driver wm831x_aldo_driver = { .probe = wm831x_aldo_probe, - .remove = wm831x_aldo_remove, .driver = { .name = "wm831x-aldo", .owner = THIS_MODULE, @@ -661,7 +639,8 @@ static int wm831x_alive_ldo_probe(struct platform_device *pdev) config.driver_data = ldo; config.regmap = wm831x->regmap;
- ldo->regulator = regulator_register(&ldo->desc, &config); + ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, + &config); if (IS_ERR(ldo->regulator)) { ret = PTR_ERR(ldo->regulator); dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", @@ -677,18 +656,8 @@ err: return ret; }
-static int wm831x_alive_ldo_remove(struct platform_device *pdev) -{ - struct wm831x_ldo *ldo = platform_get_drvdata(pdev); - - regulator_unregister(ldo->regulator); - - return 0; -} - static struct platform_driver wm831x_alive_ldo_driver = { .probe = wm831x_alive_ldo_probe, - .remove = wm831x_alive_ldo_remove, .driver = { .name = "wm831x-alive-ldo", .owner = THIS_MODULE,
From: Mark Brown broonie@linaro.org
Signed-off-by: Mark Brown broonie@linaro.org --- drivers/regulator/wm8350-regulator.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 835b5f0..a438e93 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -1206,7 +1206,8 @@ static int wm8350_regulator_probe(struct platform_device *pdev) config.regmap = wm8350->regmap;
/* register regulator */ - rdev = regulator_register(&wm8350_reg[pdev->id], &config); + rdev = devm_regulator_register(&pdev->dev, &wm8350_reg[pdev->id], + &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s\n", wm8350_reg[pdev->id].name); @@ -1217,7 +1218,6 @@ static int wm8350_regulator_probe(struct platform_device *pdev) ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq, pmic_uv_handler, 0, "UV", rdev); if (ret < 0) { - regulator_unregister(rdev); dev_err(&pdev->dev, "failed to register regulator %s IRQ\n", wm8350_reg[pdev->id].name); return ret; @@ -1233,8 +1233,6 @@ static int wm8350_regulator_remove(struct platform_device *pdev)
wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev);
- regulator_unregister(rdev); - return 0; }
linaro-kernel@lists.linaro.org
-
Mark Brown -
Sangbeom Kim