From c6515d2f00dc45d6bf5b6e56c9a7d4dc2e271563 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 24 Jan 2015 12:01:12 +0800 Subject: [PATCH] regulator: qcom_rpm: Don't update vreg->uV/mV if rpm_reg_write fails Ensure get_voltage return correct voltage if set_voltage fails. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/qcom_rpm-regulator.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/regulator/qcom_rpm-regulator.c b/drivers/regulator/qcom_rpm-regulator.c index 8364ff331a81..95099e6bfce3 100644 --- a/drivers/regulator/qcom_rpm-regulator.c +++ b/drivers/regulator/qcom_rpm-regulator.c @@ -227,9 +227,11 @@ static int rpm_reg_set_mV_sel(struct regulator_dev *rdev, return uV; mutex_lock(&vreg->lock); - vreg->uV = uV; if (vreg->is_enabled) - ret = rpm_reg_write(vreg, req, vreg->uV / 1000); + ret = rpm_reg_write(vreg, req, uV / 1000); + + if (!ret) + vreg->uV = uV; mutex_unlock(&vreg->lock); return ret; @@ -252,9 +254,11 @@ static int rpm_reg_set_uV_sel(struct regulator_dev *rdev, return uV; mutex_lock(&vreg->lock); - vreg->uV = uV; if (vreg->is_enabled) - ret = rpm_reg_write(vreg, req, vreg->uV); + ret = rpm_reg_write(vreg, req, uV); + + if (!ret) + vreg->uV = uV; mutex_unlock(&vreg->lock); return ret;