linux-kernel - [PATCH] iio: Fix fwnode_handle in __fwnode_iio_channel_get_by

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Message-ID: <20241102092525.2389952-1-quzicheng@huawei.com>
Date: Sat, 2 Nov 2024 09:25:25 +0000
From: Zicheng Qu <quzicheng@...wei.com>
To: <jic23@...nel.org>, <lars@...afoo.de>, <nuno.sa@...log.com>,
	<andy.shevchenko@...il.com>, <linux-iio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: <tanghui20@...wei.com>, <zhangqiao22@...wei.com>,
	<judy.chenhui@...wei.com>, <quzicheng@...wei.com>
Subject: [PATCH] iio: Fix fwnode_handle in __fwnode_iio_channel_get_by_name()

In the fwnode_iio_channel_get_by_name(), iterating over parent nodes to
acquire IIO channels via fwnode_for_each_parent_node(). The variable
chan was mistakenly attempted on the original node instead of the
current parent node. This patch corrects the logic to ensure that
__fwnode_iio_channel_get_by_name() is called with the correct parent
node.

Cc: stable@...r.kernel.org # v6.6+
Fixes: 1e64b9c5f9a0 ("iio: inkern: move to fwnode properties")
Signed-off-by: Zicheng Qu <quzicheng@...wei.com>
---
 drivers/iio/inkern.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 151099be2863..3305ebbdbc07 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -269,7 +269,7 @@ struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode,
 			return ERR_PTR(-ENODEV);
 		}
 
-		chan = __fwnode_iio_channel_get_by_name(fwnode, name);
+		chan = __fwnode_iio_channel_get_by_name(parent, name);
 		if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) {
 			fwnode_handle_put(parent);
  			return chan;
-- 
2.34.1