[PATCH v1 1/1] leds: lgm-sso: Propagate error codes from callee to caller

[PATCH v1 1/1] leds: lgm-sso: Propagate error codes from callee to caller

[Andy Shevchenko]

The one of the latest change to the driver reveals the problem that
the error codes from callee aren't propagated to the caller of
__sso_led_dt_parse(). Fix this accordingly.

Fixes: 9999908ca1ab ("leds: lgm-sso: Put fwnode in any case during ->probe()")
Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/leds/blink/leds-lgm-sso.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/blink/leds-lgm-sso.c b/drivers/leds/blink/leds-lgm-sso.c
index e47c47e421d6..fd8b7573285a 100644
--- a/drivers/leds/blink/leds-lgm-sso.c
+++ b/drivers/leds/blink/leds-lgm-sso.c
@@ -640,7 +640,7 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
 							      fwnode_child,
 							      GPIOD_ASIS, NULL);
 		if (IS_ERR(led->gpiod)) {
-			dev_err_probe(dev, PTR_ERR(led->gpiod), "led: get gpio fail!\n");
+			ret = dev_err_probe(dev, PTR_ERR(led->gpiod), "led: get gpio fail!\n");
 			goto __dt_err;
 		}
 
@@ -660,8 +660,11 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
 			desc->panic_indicator = 1;
 
 		ret = fwnode_property_read_u32(fwnode_child, "reg", &prop);
-		if (ret != 0 || prop >= SSO_LED_MAX_NUM) {
+		if (ret)
+			goto __dt_err;
+		if (prop >= SSO_LED_MAX_NUM) {
 			dev_err(dev, "invalid LED pin:%u\n", prop);
+			ret = -EINVAL;
 			goto __dt_err;
 		}
 		desc->pin = prop;
@@ -697,7 +700,8 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
 				desc->brightness = LED_FULL;
 		}
 
-		if (sso_create_led(priv, led, fwnode_child))
+		ret = sso_create_led(priv, led, fwnode_child);
+		if (ret)
 			goto __dt_err;
 	}
 
@@ -709,7 +713,7 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
 	list_for_each_entry(led, &priv->led_list, list)
 		sso_led_shutdown(led);
 
-	return -EINVAL;
+	return ret;
 }
 
 static int sso_led_dt_parse(struct sso_led_priv *priv)
-- 
2.30.2

Re: [PATCH v1 1/1] leds: lgm-sso: Propagate error codes from callee to caller

[Pavel Machek]

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Hi!

> The one of the latest change to the driver reveals the problem that
> the error codes from callee aren't propagated to the caller of
> __sso_led_dt_parse(). Fix this accordingly.
> 
> Fixes: 9999908ca1ab ("leds: lgm-sso: Put fwnode in any case during ->probe()")
> Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Thank you, applied.
								Pavel
								
-- 
http://www.livejournal.com/~pavelmachek

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