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net: phy: xgmiitorgmii: Support generic PHY status read

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[ Upstream commit 197f9ab7f0 ]

Some PHY drivers like the generic one do not provide a read_status
callback on their own but rely on genphy_read_status being called
directly.

With the current code, this results in a NULL function pointer call.
Call genphy_read_status instead when there is no specific callback.

Fixes: f411a6160b ("net: phy: Add gmiitorgmii converter support")
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paul Kocialkowski
2019-02-15 17:17:08 +01:00
committed by Greg Kroah-Hartman
parent 5d3d720df4
commit 7193b3d0c8
1 changed files with 4 additions and 1 deletions
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5
drivers/net/phy/xilinx_gmii2rgmii.c
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@@ -42,7 +42,10 @@ static int xgmiitorgmii_read_status(struct phy_device *phydev)
u16 val = 0;
int err;
err = priv->phy_drv->read_status(phydev);
if (priv->phy_drv->read_status)
err = priv->phy_drv->read_status(phydev);
else
err = genphy_read_status(phydev);
if (err < 0)
return err;