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net: ethernet: ti/cpsw: do not crash on single-MAC machines during resume
During resume, use for_each_slave to walk the slaves of the cpsw, and soft-reset each of them. This prevents oopses if there is only one slave configured. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Mugunthan V N <mugunthanvnm@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1e7a2e219a
1 changed files with 12 additions and 6 deletions
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@ -967,14 +967,19 @@ static inline void cpsw_add_dual_emac_def_ale_entries(
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priv->host_port, ALE_VLAN, slave->port_vlan);
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}
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static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
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static void soft_reset_slave(struct cpsw_slave *slave)
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{
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char name[32];
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snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
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soft_reset(name, &slave->sliver->soft_reset);
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}
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static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
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{
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u32 slave_port;
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sprintf(name, "slave-%d", slave->slave_num);
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soft_reset(name, &slave->sliver->soft_reset);
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soft_reset_slave(slave);
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/* setup priority mapping */
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__raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
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@ -2171,8 +2176,9 @@ static int cpsw_suspend(struct device *dev)
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if (netif_running(ndev))
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cpsw_ndo_stop(ndev);
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soft_reset("sliver 0", &priv->slaves[0].sliver->soft_reset);
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soft_reset("sliver 1", &priv->slaves[1].sliver->soft_reset);
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for_each_slave(priv, soft_reset_slave);
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pm_runtime_put_sync(&pdev->dev);
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/* Select sleep pin state */
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