From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: linux-sound@vger.kernel.org
Cc: alsa-devel@alsa-project.org, tiwai@suse.de, broonie@kernel.org,
Charles Keepax <ckeepax@opensource.cirrus.com>,
Richard Fitzgerald <rf@opensource.cirrus.com>,
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Subject: [PATCH] ASoC: cs35l56: fix usages of device_get_named_child_node()
Date: Fri, 26 Apr 2024 10:29:39 -0500 [thread overview]
Message-ID: <20240426152939.38471-1-pierre-louis.bossart@linux.intel.com> (raw)
The documentation for device_get_named_child_node() mentions this
important point:
"
The caller is responsible for calling fwnode_handle_put() on the
returned fwnode pointer.
"
Add fwnode_handle_put() to avoid leaked references.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
sound/soc/codecs/cs35l56.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index dfd703d9e12f..758dfdf9d3ea 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -1361,6 +1361,7 @@ static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l5
"spk-id-gpios", ACPI_TYPE_PACKAGE, &obj);
if (ret) {
dev_dbg(cs35l56->base.dev, "Could not get spk-id-gpios package: %d\n", ret);
+ fwnode_handle_put(af01_fwnode);
return -ENOENT;
}
@@ -1368,6 +1369,7 @@ static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l5
if (obj->package.count != 4) {
dev_warn(cs35l56->base.dev, "Unexpected spk-id element count %d\n",
obj->package.count);
+ fwnode_handle_put(af01_fwnode);
return -ENOENT;
}
@@ -1382,6 +1384,7 @@ static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l5
*/
ret = acpi_dev_add_driver_gpios(adev, cs35l56_af01_spkid_gpios_mapping);
if (ret) {
+ fwnode_handle_put(af01_fwnode);
return dev_err_probe(cs35l56->base.dev, ret,
"Failed to add gpio mapping to AF01\n");
}
@@ -1389,14 +1392,17 @@ static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l5
ret = devm_add_action_or_reset(cs35l56->base.dev,
cs35l56_acpi_dev_release_driver_gpios,
adev);
- if (ret)
+ if (ret) {
+ fwnode_handle_put(af01_fwnode);
return ret;
+ }
dev_dbg(cs35l56->base.dev, "Added spk-id-gpios mapping to AF01\n");
}
desc = fwnode_gpiod_get_index(af01_fwnode, "spk-id", 0, GPIOD_IN, NULL);
if (IS_ERR(desc)) {
+ fwnode_handle_put(af01_fwnode);
ret = PTR_ERR(desc);
return dev_err_probe(cs35l56->base.dev, ret, "Get GPIO from AF01 failed\n");
}
@@ -1405,9 +1411,12 @@ static int cs35l56_try_get_broken_sdca_spkid_gpio(struct cs35l56_private *cs35l5
gpiod_put(desc);
if (ret < 0) {
+ fwnode_handle_put(af01_fwnode);
dev_err_probe(cs35l56->base.dev, ret, "Error reading spk-id GPIO\n");
return ret;
- }
+ }
+
+ fwnode_handle_put(af01_fwnode);
dev_info(cs35l56->base.dev, "Got spk-id from AF01\n");
--
2.40.1
next reply other threads:[~2024-04-26 15:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-26 15:29 Pierre-Louis Bossart [this message]
2024-04-30 14:31 ` [PATCH] ASoC: cs35l56: fix usages of device_get_named_child_node() Mark Brown
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