Messages in this thread Patch in this message | | | Subject | [PATCH 1/2] regulator: ab8500: Don't update info->update_val if write to register fails | From | Axel Lin <> | Date | Tue, 09 Apr 2013 20:15:06 +0800 |
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This patch ensures info->update_val is consistent with current register value.
Signed-off-by: Axel Lin <axel.lin@ingics.com> --- drivers/regulator/ab8500.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c index acdffc5..1866dbf 100644 --- a/drivers/regulator/ab8500.c +++ b/drivers/regulator/ab8500.c @@ -392,9 +392,8 @@ static int ab8500_regulator_set_mode(struct regulator_dev *rdev, val = info->mode_val_idle; break; default: - if (info->shared_mode) - mutex_unlock(&shared_mode_mutex); - return -EINVAL; + ret = -EINVAL; + goto out_unlock; } bank = info->mode_bank; @@ -405,17 +404,14 @@ static int ab8500_regulator_set_mode(struct regulator_dev *rdev, switch (mode) { case REGULATOR_MODE_NORMAL: - info->update_val = info->update_val_normal; val = info->update_val_normal; break; case REGULATOR_MODE_IDLE: - info->update_val = info->update_val_idle; val = info->update_val_idle; break; default: - if (info->shared_mode) - mutex_unlock(&shared_mode_mutex); - return -EINVAL; + ret = -EINVAL; + goto out_unlock; } bank = info->update_bank; @@ -426,9 +422,11 @@ static int ab8500_regulator_set_mode(struct regulator_dev *rdev, if (dmr || ab8500_regulator_is_enabled(rdev)) { ret = abx500_mask_and_set_register_interruptible(info->dev, bank, reg, mask, val); - if (ret < 0) + if (ret < 0) { dev_err(rdev_get_dev(rdev), "couldn't set regulator mode\n"); + goto out_unlock; + } dev_vdbg(rdev_get_dev(rdev), "%s-set_mode (bank, reg, mask, value): " @@ -437,6 +435,10 @@ static int ab8500_regulator_set_mode(struct regulator_dev *rdev, mask, val); } + if (!dmr) + info->update_val = val; + +out_unlock: if (info->shared_mode) mutex_unlock(&shared_mode_mutex); -- 1.7.10.4
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