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dpaa2-switch: put MAC endpoint device on disconnect

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[ Upstream commit 4c1eabbef7 ]

fsl_mc_get_endpoint() returns the MAC endpoint device with a reference
taken through device_find_child(). The switch port connect path stores
that device in mac->mc_dev and keeps it for the lifetime of the connected
MAC object.

However, the disconnect path only closes the MAC and frees the dpaa2_mac
object. It does not drop the endpoint device reference stored in
mac->mc_dev, so every successful connect leaks that device reference when
the MAC is later disconnected.

Drop the endpoint device reference before freeing the dpaa2_mac object.

Fixes: 84cba72956 ("dpaa2-switch: integrate the MAC endpoint support")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260708111025.749311-1-lgs201920130244@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Guangshuo Li
2026-08-03 11:15:19 +02:00
committed by Greg Kroah-Hartman
parent 1e2e2d9806
commit 1f4ca61b7a
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+1
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@@ -1510,6 +1510,7 @@ static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
dpaa2_mac_disconnect(mac);
dpaa2_mac_close(mac);
put_device(&mac->mc_dev->dev);
kfree(mac);
}