From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: "Pavel Machek" <pavel@ucw.cz>,
"Andy Shevchenko" <andy.shevchenko@gmail.com>,
"Amireddy Mallikarjuna reddy"
<mallikarjunax.reddy@linux.intel.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Abanoub Sameh" <abanoubsameh8@gmail.com>,
"Marek Behún" <marek.behun@nic.cz>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 04/13] leds: lgm-sso: Put fwnode in any case during ->probe()
Date: Sat, 29 May 2021 14:19:26 +0300 [thread overview]
Message-ID: <20210529111935.3849707-4-andy.shevchenko@gmail.com> (raw)
In-Reply-To: <20210529111935.3849707-1-andy.shevchenko@gmail.com>
fwnode_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.
All the same in fwnode_for_each_child_node() case.
Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC")
Cc: Amireddy Mallikarjuna reddy <mallikarjunax.reddy@linux.intel.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
v2: simplified sso_led_dt_parse() fix (Pavel)
drivers/leds/blink/leds-lgm-sso.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/leds/blink/leds-lgm-sso.c b/drivers/leds/blink/leds-lgm-sso.c
index e63112d445eb..a27687e0fc04 100644
--- a/drivers/leds/blink/leds-lgm-sso.c
+++ b/drivers/leds/blink/leds-lgm-sso.c
@@ -633,8 +633,10 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
fwnode_for_each_child_node(fw_ssoled, fwnode_child) {
led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
- if (!led)
- return -ENOMEM;
+ if (!led) {
+ ret = -ENOMEM;
+ goto __dt_err;
+ }
INIT_LIST_HEAD(&led->list);
led->priv = priv;
@@ -704,11 +706,11 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
if (sso_create_led(priv, led, fwnode_child))
goto __dt_err;
}
- fwnode_handle_put(fw_ssoled);
return 0;
+
__dt_err:
- fwnode_handle_put(fw_ssoled);
+ fwnode_handle_put(fwnode_child);
/* unregister leds */
list_for_each(p, &priv->led_list) {
led = list_entry(p, struct sso_led, list);
@@ -733,6 +735,7 @@ static int sso_led_dt_parse(struct sso_led_priv *priv)
fw_ssoled = fwnode_get_named_child_node(fwnode, "ssoled");
if (fw_ssoled) {
ret = __sso_led_dt_parse(priv, fw_ssoled);
+ fwnode_handle_put(fw_ssoled);
if (ret)
return ret;
}
--
2.31.1
next prev parent reply other threads:[~2021-05-29 11:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-29 11:19 [PATCH v2 01/13] leds: core: The -ENOTSUPP should never be seen by user space Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 02/13] leds: el15203000: Give better margin for usleep_range() Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 03/13] leds: el15203000: Correct headers (of*.h -> mod_devicetable.h) Andy Shevchenko
2021-05-29 11:19 ` Andy Shevchenko [this message]
2021-05-29 11:19 ` [PATCH v2 05/13] leds: lgm-sso: Don't spam logs when probe is deferred Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 06/13] leds: lgm-sso: Remove explicit managed GPIO resource cleanup Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 07/13] leds: lgm-sso: Convert to use list_for_each_entry*() API Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 08/13] leds: lm3692x: Correct headers (of*.h -> mod_devicetable.h) Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 09/13] leds: lm3697: Update header block to reflect reality Andy Shevchenko
2021-08-03 21:47 ` Pavel Machek
2021-05-29 11:19 ` [PATCH v2 10/13] leds: lm3697: Make error handling more robust Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 11/13] leds: lt3593: Put fwnode in any case during ->probe() Andy Shevchenko
2021-05-29 11:19 ` [PATCH v2 12/13] leds: rt8515: " Andy Shevchenko
2021-06-01 10:06 ` Linus Walleij
2021-06-05 9:46 ` andy
2021-08-03 21:50 ` Pavel Machek
2021-08-03 21:51 ` Pavel Machek
2021-05-29 11:19 ` [PATCH v2 13/13] leds: sgm3140: " Andy Shevchenko
2021-06-23 13:15 ` [PATCH v2 01/13] leds: core: The -ENOTSUPP should never be seen by user space Andy Shevchenko
2021-07-13 7:34 ` Andy Shevchenko
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