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| author | Thierry Reding <thierry.reding@gmail.com> | 2015-10-05 15:38:32 +0300 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2015-11-10 15:06:42 +0300 |
| commit | 655a03554cbdf73e8114367441f10858baac59bf (patch) | |
| tree | 7e43fd930cc726ad92f0a331493e3f8521603918 /drivers/pwm | |
| parent | f6649f7ad8efbaf82679ab0ccdfe837a65bd58d8 (diff) | |
| download | linux-655a03554cbdf73e8114367441f10858baac59bf.tar.xz | |
pwm: Return -ENODEV if no PWM lookup match is found
When looking up a PWM using the lookup table, assume that all entries
will have been added already, so failure to find a match means that no
corresponding entry has been registered.
This fixes an issue where -EPROBE_DEFER would be returned if the PWM
lookup table is empty. After this fix, -EPROBE_DEFER is reserved for
situations where no provider has yet registered for a matching entry.
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index b8f6c309c160..d24ca5f281b4 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -738,8 +738,10 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) } } - if (!chosen) + if (!chosen) { + pwm = ERR_PTR(-ENODEV); goto out; + } chip = pwmchip_find_by_name(chosen->provider); if (!chip) |