diff options
| author | Chao Xie <chao.xie@marvell.com> | 2013-06-14 01:21:50 -0400 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-06-18 09:40:57 +0200 |
| commit | 52705344d00512f0bb48c66478582bd10eb1750f (patch) | |
| tree | 40848be952a730db87f30a546dc64edc658f3a39 | |
| parent | c750d8e053c08ccb82d814d695e64d1eb602a91a (diff) | |
mfd: 88pm800: Enhance error handling for sub pages probe/remove
pm800_pages_init and pm800_pages_exit are called by pm800_probe.
Change the code to enhance error handling and remove unused code at
pm800_pages_init/exit and pm800_probe.
Signed-off-by: Yi Zhang <yizhang@marvell.com>
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/88pm800.c | 81 |
1 files changed, 48 insertions, 33 deletions
diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c index 6b607adebce..4ebb2e215ba 100644 --- a/drivers/mfd/88pm800.c +++ b/drivers/mfd/88pm800.c @@ -22,6 +22,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/err.h> #include <linux/i2c.h> #include <linux/mfd/core.h> #include <linux/mfd/88pm80x.h> @@ -370,50 +371,64 @@ static int pm800_pages_init(struct pm80x_chip *chip) struct pm80x_subchip *subchip; struct i2c_client *client = chip->client; + int ret = 0; + subchip = chip->subchip; - /* PM800 block power: i2c addr 0x31 */ - if (subchip->power_page_addr) { - subchip->power_page = - i2c_new_dummy(client->adapter, subchip->power_page_addr); - subchip->regmap_power = - devm_regmap_init_i2c(subchip->power_page, - &pm80x_regmap_config); - i2c_set_clientdata(subchip->power_page, chip); - } else - dev_info(chip->dev, - "PM800 block power 0x31: No power_page_addr\n"); - - /* PM800 block GPADC: i2c addr 0x32 */ - if (subchip->gpadc_page_addr) { - subchip->gpadc_page = i2c_new_dummy(client->adapter, - subchip->gpadc_page_addr); - subchip->regmap_gpadc = - devm_regmap_init_i2c(subchip->gpadc_page, - &pm80x_regmap_config); - i2c_set_clientdata(subchip->gpadc_page, chip); - } else - dev_info(chip->dev, - "PM800 block GPADC 0x32: No gpadc_page_addr\n"); + if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr) + return -ENODEV; + + /* PM800 block power page */ + subchip->power_page = i2c_new_dummy(client->adapter, + subchip->power_page_addr); + if (subchip->power_page == NULL) { + ret = -ENODEV; + goto out; + } - return 0; + subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page, + &pm80x_regmap_config); + if (IS_ERR(subchip->regmap_power)) { + ret = PTR_ERR(subchip->regmap_power); + dev_err(chip->dev, + "Failed to allocate regmap_power: %d\n", ret); + goto out; + } + + i2c_set_clientdata(subchip->power_page, chip); + + /* PM800 block GPADC */ + subchip->gpadc_page = i2c_new_dummy(client->adapter, + subchip->gpadc_page_addr); + if (subchip->gpadc_page == NULL) { + ret = -ENODEV; + goto out; + } + + subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page, + &pm80x_regmap_config); + if (IS_ERR(subchip->regmap_gpadc)) { + ret = PTR_ERR(subchip->regmap_gpadc); + dev_err(chip->dev, + "Failed to allocate regmap_gpadc: %d\n", ret); + goto out; + } + i2c_set_clientdata(subchip->gpadc_page, chip); + +out: + return ret; } static void pm800_pages_exit(struct pm80x_chip *chip) { struct pm80x_subchip *subchip; - regmap_exit(chip->regmap); - i2c_unregister_device(chip->client); - subchip = chip->subchip; - if (subchip->power_page) { - regmap_exit(subchip->regmap_power); + + if (subchip && subchip->power_page) i2c_unregister_device(subchip->power_page); - } - if (subchip->gpadc_page) { - regmap_exit(subchip->regmap_gpadc); + + if (subchip && subchip->gpadc_page) i2c_unregister_device(subchip->gpadc_page); - } } static int device_800_init(struct pm80x_chip *chip, |