This is a note to let you know that I've just added the patch titled
regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regulators-helpers-fix-handling-of-bypass_val_on-in-get_bypass_regmap.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 85b037442e3f0e84296ab1010fd6b057eee18496 Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 10 Nov 2016 10:45:18 +0000
Subject: regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
From: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
commit 85b037442e3f0e84296ab1010fd6b057eee18496 upstream.
The handling of bypass_val_on that was added in
regulator_get_bypass_regmap is done unconditionally however
several drivers don't define a value for bypass_val_on. This
results in those drivers reporting bypass being enabled when
it is not. In regulator_set_bypass_regmap we use bypass_mask
if bypass_val_on is zero. This patch adds similar handling in
regulator_get_bypass_regmap.
Fixes: commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value")
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/regulator/helpers.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/regulator/helpers.c
+++ b/drivers/regulator/helpers.c
@@ -454,13 +454,17 @@ EXPORT_SYMBOL_GPL(regulator_set_bypass_r
int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable)
{
unsigned int val;
+ unsigned int val_on = rdev->desc->bypass_val_on;
int ret;
ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val);
if (ret != 0)
return ret;
- *enable = (val & rdev->desc->bypass_mask) == rdev->desc->bypass_val_on;
+ if (!val_on)
+ val_on = rdev->desc->bypass_mask;
+
+ *enable = (val & rdev->desc->bypass_mask) == val_on;
return 0;
}
Patches currently in stable-queue which might be from ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx are
queue-4.9/regulators-helpers-fix-handling-of-bypass_val_on-in-get_bypass_regmap.patch
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