From b46d2b4d3d8166ab51f491a2801e2cbed2e8a7aa Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Fri, 13 Sep 2019 20:07:49 +0200
Subject: [PATCH] drivers: leds: tlc591xx: check error during device init
The driver currently ignores errors from register writes at probe time.
It will hence register an LED class device no matter whether the
pyhsical device is present or not.
To fix this, make the device probe fail in case regmap operations
return an error.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
---
drivers/leds/leds-tlc591xx.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
index 59ff088c7d75c5..00702824d27cd9 100644
--- a/drivers/leds/leds-tlc591xx.c
+++ b/drivers/leds/leds-tlc591xx.c
@@ -147,7 +147,10 @@ tlc591xx_configure(struct device *dev,
unsigned int i;
int err = 0;
- tlc591xx_set_mode(priv->regmap, MODE2_DIM);
+ err = tlc591xx_set_mode(priv->regmap, MODE2_DIM);
+ if (err < 0)
+ return err;
+
for (i = 0; i < TLC591XX_MAX_LEDS; i++) {
struct tlc591xx_led *led = &priv->leds[i];
--
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