[PATCH] pwm: Add missing dummy for devm_pwmchip_add()

[Geert Uytterhoeven]

The PWM subsystem supports compile-testing if CONFIG_PWM is disabled.
However, no dummy is provided for devm_pwmchip_add(), which may lead to
build failures.

Fixes: bcda91bf86c1ff76 ("pwm: Add a device-managed function to add PWM chips")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
 include/linux/pwm.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index d70c6e5a839d6902..bba492eea96c5552 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -478,6 +478,11 @@ static inline int pwmchip_remove(struct pwm_chip *chip)
 	return -EINVAL;
 }
 
+static inline int devm_pwmchip_add(struct device *dev, struct pwm_chip *chip)
+{
+	return -EINVAL;
+}
+
 static inline struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
 						       unsigned int index,
 						       const char *label)
-- 
2.25.1