Oct 28 2012

drivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free 

Author: Peter Senna Tschudin <peter.senna@gmail.com>

Based on commit b27393aecf66199f5ddad37c302d3e0cfadbe6c0

Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.

The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// 
@@
expression E;
@@
  ... when != mdiobus_unregister(E);

+ mdiobus_unregister(E);
  mdiobus_free(E);
// 

Signed-off-by: Peter Senna Tschudin 
Tested-by: Roland Stigge 
Tested-by: Alexandre Pereira da Silva 
Signed-off-by: David S. Miller 

---
 drivers/net/ethernet/nxp/lpc_eth.c | 1 +
 1 file changed, 1 insertion(+)
 
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index 53743f7..af8b414 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1524,6 +1524,7 @@ static int lpc_eth_drv_remove(struct platform_device *pdev)
 				  pldat->dma_buff_base_p);
 	free_irq(ndev->irq, ndev);
 	iounmap(pldat->net_base);
+	mdiobus_unregister(pldat->mii_bus);
 	mdiobus_free(pldat->mii_bus);
 	clk_disable(pldat->clk);
 	clk_put(pldat->clk);

qlambert