linux-kernel - Re: [PATCH] da903x regulator bug fix

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Message-ID: <f17812d70810271802v75b08712l4ab243802f59ecce@mail.gmail.com>
Date:	Tue, 28 Oct 2008 09:02:52 +0800
From:	"Eric Miao" <eric.y.miao@...il.com>
To:	"Jonathan Cameron" <Jonathan.Cameron@...il.com>
Cc:	"Jonathan Cameron" <jic23@....ac.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	"Liam Girdwood" <lrg@...nel.org>
Subject: Re: [PATCH] da903x regulator bug fix

(Resend with corrected e-mail address of Liam)

I'd suggest making this a static inline function then,
e.g. to_da903x_dev(rdev), which will help both
readability and future modifications.

> On Mon, Oct 27, 2008 at 11:29 PM, Jonathan Cameron
> <Jonathan.Cameron@...il.com> wrote:
>> Changes the device registration part of the probe function to supply the
>> regulator device rather than its parent (the mfd device) as this caused
>> problems when the regulator core attempted to find constraints associated
>> with the regulators.
>>
>> Signed-of-by: Jonathan Cameron <jic23@....ac.uk>
>>
>> --
>> This is quickest and simplest way to fix this bug. There may be better
>> ways of doing it, but they all require considerably more substantial
>> changes to the driver.
>>
>> diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
>> index 3688e33..f928aa1 100644
>> --- a/drivers/regulator/da903x.c
>> +++ b/drivers/regulator/da903x.c
>> @@ -93,7 +93,7 @@ static int da903x_set_ldo_voltage(struct regulator_dev
>> *rdev,
>>                   int min_uV, int max_uV)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t val, mask;
>>
>>     if (check_range(info, min_uV, max_uV)) {
>> @@ -111,7 +111,7 @@ static int da903x_set_ldo_voltage(struct
>> regulator_dev *rdev,
>>  static int da903x_get_voltage(struct regulator_dev *rdev)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t val, mask;
>>     int ret;
>>
>> @@ -128,7 +128,7 @@ static int da903x_get_voltage(struct regulator_dev
>> *rdev)
>>  static int da903x_enable(struct regulator_dev *rdev)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>
>>     return da903x_set_bits(da9034_dev, info->enable_reg,
>>                     1 << info->enable_bit);
>> @@ -137,7 +137,7 @@ static int da903x_enable(struct regulator_dev *rdev)
>>  static int da903x_disable(struct regulator_dev *rdev)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>
>>     return da903x_clr_bits(da9034_dev, info->enable_reg,
>>                     1 << info->enable_bit);
>> @@ -146,7 +146,7 @@ static int da903x_disable(struct regulator_dev *rdev)
>>  static int da903x_is_enabled(struct regulator_dev *rdev)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t reg_val;
>>     int ret;
>>
>> @@ -238,7 +238,7 @@ static int da9034_set_dvc_voltage(struct
>> regulator_dev *rdev,
>>                   int min_uV, int max_uV)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t val, mask;
>>     int ret;
>>
>> @@ -264,7 +264,7 @@ static int da9034_set_ldo12_voltage(struct
>> regulator_dev *rdev,
>>                     int min_uV, int max_uV)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t val, mask;
>>
>>     if (check_range(info, min_uV, max_uV)) {
>> @@ -283,7 +283,7 @@ static int da9034_set_ldo12_voltage(struct
>> regulator_dev *rdev,
>>  static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
>>  {
>>     struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
>> -    struct device *da9034_dev = rdev_get_dev(rdev)->parent;
>> +    struct device *da9034_dev = rdev_get_dev(rdev)->parent->parent;
>>     uint8_t val, mask;
>>     int ret;
>>
>> @@ -466,7 +466,7 @@ static int __devinit da903x_regulator_probe(struct
>> platform_device *pdev)
>>     if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
>>         ri->desc.ops = &da9030_regulator_ldo1_15_ops;
>>
>> -    rdev = regulator_register(&ri->desc, pdev->dev.parent, ri);
>> +    rdev = regulator_register(&ri->desc, &pdev->dev, ri);
>>     if (IS_ERR(rdev)) {
>>         dev_err(&pdev->dev, "failed to register regulator %s\n",
>>                 ri->desc.name);
>>
>>
>>
>>
>>
>
>
>
> --
> Cheers
> - eric
>



-- 
Cheers
- eric
--
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