From: Axel Lin <axel.lin@ingics.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>,
Lee Jones <lee.jones@linaro.org>,
Yvan FILLION <yvan.fillion@stericsson.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] regulator: ab8500: Don't update info->update_val if write to register fails
Date: Tue, 09 Apr 2013 20:15:06 +0800 [thread overview]
Message-ID: <1365509706.3801.1.camel@phoenix> (raw)
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
next reply other threads:[~2013-04-09 12:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-09 12:15 Axel Lin [this message]
2013-04-09 12:17 ` [PATCH 2/2] regulator: ab8500: Don't update lp_mode_req flag in set_mode() error paths Axel Lin
2013-04-17 9:49 ` Bengt Jönsson
2013-04-16 16:51 ` [PATCH 1/2] regulator: ab8500: Don't update info->update_val if write to register fails Axel Lin
2013-04-17 9:48 ` Bengt Jönsson
2013-04-17 14:09 ` Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1365509706.3801.1.camel@phoenix \
--to=axel.lin@ingics.com \
--cc=bengt.g.jonsson@stericsson.com \
--cc=broonie@opensource.wolfsonmicro.com \
--cc=lee.jones@linaro.org \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=yvan.fillion@stericsson.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).