[U-Boot-Users] [PATCH] Fix crash scenario when TSEC has no PHY

[Ben Warren]

This fixes the case where either no PHY is attached to a TSEC (e.g. a
switch is connected via RMII) or if the PHY is defective/incorrectly
configured.  Previous behavior was crash.

Signed-off-by: Ben Warren <bwarren at qstreams.com>
---
 drivers/tsec.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/tsec.c b/drivers/tsec.c
index 770517b..400e593 100644
--- a/drivers/tsec.c
+++ b/drivers/tsec.c
@@ -313,7 +313,8 @@ static int init_phy(struct eth_device *d
 	 * PHY */
 	curphy = get_phy_info(dev);
 
-	if (NULL == curphy) {
+	if (curphy == NULL) {
+		priv->phyinfo = NULL;
 		printf("%s: No PHY found\n", dev->name);
 
 		return 0;
@@ -661,7 +662,8 @@ static void startup_tsec(struct eth_devi
 	rtx.txbd[TX_BUF_CNT - 1].status |= TXBD_WRAP;
 
 	/* Start up the PHY */
-	phy_run_commands(priv, priv->phyinfo->startup);
+	if(priv->phyinfo)
+		phy_run_commands(priv, priv->phyinfo->startup);
 	adjust_link(dev);
 
 	/* Enable Transmit and Receive */
@@ -765,7 +767,8 @@ static void tsec_halt(struct eth_device 
 	regs->maccfg1 &= ~(MACCFG1_TX_EN | MACCFG1_RX_EN);
 
 	/* Shut down the PHY, as needed */
-	phy_run_commands(priv, priv->phyinfo->shutdown);
+	if(priv->phyinfo)
+		phy_run_commands(priv, priv->phyinfo->shutdown);
 }
 
 struct phy_info phy_info_M88E1011S = {
-- 
1.4.1