linux-kernel - [PATCH] most: core: Drop device reference after usage in get

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Message-Id: <20250804082955.3621026-1-linmq006@gmail.com>
Date: Mon,  4 Aug 2025 12:29:55 +0400
From: Miaoqian Lin <linmq006@...il.com>
To: Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>,
	Christian Gromm <christian.gromm@...rochip.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Cc: linmq006@...il.com
Subject: [PATCH] most: core: Drop device reference after usage in get_channel()

In get_channel(), the reference obtained by bus_find_device_by_name()
was dropped via put_device() before accessing the device's driver data
Move put_device() after usage to avoid potential issues.

Fixes: 2485055394be ("staging: most: core: drop device reference")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/most/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/most/core.c b/drivers/most/core.c
index a635d5082ebb..da319d108ea1 100644
--- a/drivers/most/core.c
+++ b/drivers/most/core.c
@@ -538,8 +538,8 @@ static struct most_channel *get_channel(char *mdev, char *mdev_ch)
 	dev = bus_find_device_by_name(&mostbus, NULL, mdev);
 	if (!dev)
 		return NULL;
-	put_device(dev);
 	iface = dev_get_drvdata(dev);
+	put_device(dev);
 	list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) {
 		if (!strcmp(dev_name(&c->dev), mdev_ch))
 			return c;
-- 
2.25.1