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net: hisilicon: hns_dsaf_mac: fix mdio device leak in hns_mac_register_phy()

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hns_dsaf_find_platform_device() returns the mdio platform device with its
reference count incremented. hns_mac_register_phy() never drops that
reference, so the mdio device can not be released.

Release the reference on both the deferred probe and the normal path.

Fixes: 1d1afa2ebf ("net: hns: register phy device in each mac initial sequence")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260917110828.2148390-1-vulab@iscas.ac.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Wentao Liang 2026-09-17 11:08:28 +00:00 committed by Paolo Abeni
parent ac4334522e
commit 999e8295bc
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
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@ -793,6 +793,7 @@ static int hns_mac_register_phy(struct hns_mac_cb *mac_cb)
dev_err(mac_cb->dev,
"mac%d mdio is NULL, dsaf will probe again later\n",
mac_cb->mac_id);
put_device(&pdev->dev);
return -EPROBE_DEFER;
}
@ -801,6 +802,8 @@ static int hns_mac_register_phy(struct hns_mac_cb *mac_cb)
dev_dbg(mac_cb->dev, "mac%d register phy addr:%d\n",
mac_cb->mac_id, addr);
put_device(&pdev->dev);
return rc;
}