[PATCH 4.6 19/81] net: stmmac: Fix incorrect memcpy source memory

[Greg Kroah-Hartman]

4.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marek Vasut <marex@xxxxxxx>

[ Upstream commit 643d60bf575daaba93c1ac0d0e1c4b1d4ded1f75 ]

The memcpy() currently copies mdio_bus_data into new_bus->irq, which
makes no sense, since the mdio_bus_data structure contains more than
just irqs. The code was likely supposed to copy mdio_bus_data->irqs
into the new_bus->irq instead, so fix this.

Fixes: e7f4dc3536a4 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
Cc: Alexandre Torgue <alexandre.torgue@xxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -209,7 +209,7 @@ int stmmac_mdio_register(struct net_devi
 		return -ENOMEM;
 
 	if (mdio_bus_data->irqs)
-		memcpy(new_bus->irq, mdio_bus_data, sizeof(new_bus->irq));
+		memcpy(new_bus->irq, mdio_bus_data->irqs, sizeof(new_bus->irq));
 
 #ifdef CONFIG_OF
 	if (priv->device->of_node)