[PATCH 5.13 163/300] leds: lgm-sso: Propagate error codes from callee to caller

Greg Kroah-Hartman
2021-09-13T14:10:31Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 9cbc861095375793a69858f91f3ac4e817f320f0 ]

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>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 6c0ffcaa6b5c..24736f29d363 100644
--- a/drivers/leds/blink/leds-lgm-sso.c
+++ b/drivers/leds/blink/leds-lgm-sso.c
@@ -643,7 +643,7 @@ __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;
}

@@ -663,8 +663,11 @@ __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;
@@ -700,7 +703,8 @@ __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;
}

@@ -714,7 +718,7 @@ __dt_err:
sso_led_shutdown(led);
}

- return -EINVAL;
+ return ret;
}

static int sso_led_dt_parse(struct sso_led_priv *priv)
--
2.30.2