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Commit 46b65a8f authored by Axel Lin's avatar Axel Lin Committed by Samuel Ortiz
Browse files

mfd: Fix checking return value of 88pm8xx regmap_read() 



Check the return value of regmap_read() rather than the read value.

Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent e102befe

drivers/mfd/88pm800.c

+9 −7
Original line number Diff line number Diff line
@@ -419,22 +419,24 @@ static int __devinit device_800_init(struct pm80x_chip *chip, 
				     struct pm80x_platform_data *pdata)

{

	int ret, pmic_id;

	unsigned int val;



	regmap_read(chip->regmap, PM800_CHIP_ID, &ret);

	ret = regmap_read(chip->regmap, PM800_CHIP_ID, &val);

	if (ret < 0) {

		dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);

		goto out;

	}



	pmic_id = ret & PM80X_VERSION_MASK;

	pmic_id = val & PM80X_VERSION_MASK;



	if ((pmic_id >= PM800_CHIP_A0) && (pmic_id <= PM800_CHIP_END)) {

		chip->version = ret;

		chip->version = val;

		dev_info(chip->dev,

			 "88PM80x:Marvell 88PM800 (ID:0x%x) detected\n", ret);

			 "88PM80x:Marvell 88PM800 (ID:0x%x) detected\n", val);

	} else {

		dev_err(chip->dev,

			"Failed to detect Marvell 88PM800:ChipID[0x%x]\n", ret);

			"Failed to detect Marvell 88PM800:ChipID[0x%x]\n", val);

		ret = -EINVAL;

		goto out;

	}
@@ -442,12 +444,12 @@ static int __devinit device_800_init(struct pm80x_chip *chip, 
	 * alarm wake up bit will be clear in device_irq_init(),

	 * read before that

	 */

	regmap_read(chip->regmap, PM800_RTC_CONTROL, &ret);

	ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);

	if (ret < 0) {

		dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);

		goto out;

	}

	if (ret & PM800_ALARM_WAKEUP) {

	if (val & PM800_ALARM_WAKEUP) {

		if (pdata && pdata->rtc)

			pdata->rtc->rtc_wakeup = 1;

	}

drivers/mfd/88pm805.c

+3 −2
Original line number Diff line number Diff line
@@ -192,6 +192,7 @@ static struct regmap_irq_chip pm805_irq_chip = { 
static int __devinit device_805_init(struct pm80x_chip *chip)

{

	int ret = 0;

	unsigned int val;

	struct regmap *map = chip->regmap;



	if (!map) {
@@ -199,12 +200,12 @@ static int __devinit device_805_init(struct pm80x_chip *chip) 
		return -EINVAL;

	}



	regmap_read(map, PM805_CHIP_ID, &ret);

	ret = regmap_read(map, PM805_CHIP_ID, &val);

	if (ret < 0) {

		dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);

		goto out_irq_init;

	}

	chip->version = ret;

	chip->version = val;



	chip->regmap_irq_chip = &pm805_irq_chip;