net: eth-uclass: Fix for DM USB ethernet support

When a USB ethernet device is halted, the device driver is removed. When
this happens the uclass private memory is freed and uclass_priv is set to
NULL. This causes a data abort when uclass_priv->state is then set to
ETH_STATE_PASSIVE.

Fix it by checking if uclass_priv is NULL before setting uclass_priv->state

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/net/eth-uclass.c b/net/eth-uclass.c
index fa3f5497a2902577f2bbb84947d918836b7bcbab..91d861be41365459a7bd5c114376b59b8c5a7652 100644 (file)
--- a/net/eth-uclass.c
+++ b/net/eth-uclass.c
@@ -312,7 +312,8 @@ void eth_halt(void)
 
        eth_get_ops(current)->stop(current);
        priv = current->uclass_priv;
-       priv->state = ETH_STATE_PASSIVE;
+       if (priv)
+               priv->state = ETH_STATE_PASSIVE;
 }
 
 int eth_is_active(struct udevice *dev)