diff options
| author | Mark Brown <broonie@linaro.org> | 2014-01-27 17:34:07 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-20 11:10:07 -0800 |
| commit | 78298bb3029d1c868f41541764716a80f427a153 (patch) | |
| tree | 6134c1e82083983b6b87b117bcd16cd836213480 | |
| parent | 8b44deea7961078f654da44f89583138f85c978c (diff) | |
regulator: core: Correct default return value for full constraints
commit 317b5684d52269b75b4ec6480f9dac056d0d4ba8 upstream.
Once we have full constraints then all supply mappings should be known to
the regulator API. This means that we should treat failed lookups as fatal
rather than deferring in the hope of further registrations but this was
broken by commit 9b92da1f1205bd25 "regulator: core: Fix default return
value for _get()" which was targeted at DT systems but unintentionally
broke non-DT systems by changing the default return value.
Fix this by explicitly returning -EPROBE_DEFER from the DT lookup if we
find a property but no corresponding regulator and by having the non-DT
case default to -ENODEV when we have full constraints.
Fixes: 9b92da1f1205bd25 "regulator: core: Fix default return value for _get()"
Signed-off-by: Mark Brown <broonie@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/regulator/core.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index d85f31385b24..0186c1bab49c 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1272,6 +1272,8 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev, if (r->dev.parent && node == r->dev.of_node) return r; + *ret = -EPROBE_DEFER; + return NULL; } else { /* * If we couldn't even get the node then it's @@ -1312,7 +1314,7 @@ static struct regulator *_regulator_get(struct device *dev, const char *id, struct regulator_dev *rdev; struct regulator *regulator = ERR_PTR(-EPROBE_DEFER); const char *devname = NULL; - int ret = -EPROBE_DEFER; + int ret; if (id == NULL) { pr_err("get() with no identifier\n"); @@ -1322,6 +1324,11 @@ static struct regulator *_regulator_get(struct device *dev, const char *id, if (dev) devname = dev_name(dev); + if (have_full_constraints()) + ret = -ENODEV; + else + ret = -EPROBE_DEFER; + mutex_lock(®ulator_list_mutex); rdev = regulator_dev_lookup(dev, id, &ret); |