net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case

[ Upstream commit 589bf32f09852041fbd3b7ce1a9e703f95c230ba ]

add appropriate calls to clk_disable_unprepare() by jumping to out_mdio
in case orion_mdio_probe() returns -EPROBE_DEFER.

Found by Linux Driver Verification project (linuxtesting.org).

Fixes: 3d604da1e954 ("net: mvmdio: get and enable optional clock")
Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index fc2fb25343f417964070c058baea2e8162dab595..c122b3b99cd8e4012b90058c505f59959955e557 100644 (file)
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c
@@ -241,7 +241,8 @@ static int orion_mdio_probe(struct platform_device *pdev)
                        dev->regs + MVMDIO_ERR_INT_MASK);
 
        } else if (dev->err_interrupt == -EPROBE_DEFER) {
-               return -EPROBE_DEFER;
+               ret = -EPROBE_DEFER;
+               goto out_mdio;
        }
 
        mutex_init(&dev->lock);