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

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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>
This commit is contained in:
Jean-Jacques Hiblot 2018-08-09 16:17:41 +02:00 • committed by Marek Vasut
parent c73251eac1
commit c3211708cf
1 changed files with 2 additions and 1 deletions
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3
net/eth-uclass.c
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@ -312,7 +312,8 @@ void eth_halt(void)
eth_get_ops(current)->stop(current); eth_get_ops(current)->stop(current);
priv = current->uclass_priv; priv = current->uclass_priv;
priv->state = ETH_STATE_PASSIVE; if (priv)
priv->state = ETH_STATE_PASSIVE;
} }
int eth_is_active(struct udevice *dev) int eth_is_active(struct udevice *dev)