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authorThierry Reding <thierry.reding@gmail.com>2015-10-05 15:38:32 +0300
committerThierry Reding <thierry.reding@gmail.com>2015-11-10 15:06:42 +0300
commit655a03554cbdf73e8114367441f10858baac59bf (patch)
tree7e43fd930cc726ad92f0a331493e3f8521603918 /drivers/pwm
parentf6649f7ad8efbaf82679ab0ccdfe837a65bd58d8 (diff)
downloadlinux-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.c4
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)