No need to create additional vars to identify if interface is running.
So simplify code by removing redundant var and checking usage counter
instead.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
---
drivers/net/ethernet/ti/cpsw.c | 31 +++++++++++++++++--------------
1 file changed, 17 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index f798905..c681d39 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -357,7 +357,6 @@ struct cpsw_slave {
struct phy_device *phy;
struct net_device *ndev;
u32 port_vlan;
- u32 open_stat;
};
static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
@@ -1235,13 +1234,13 @@ static void cpsw_get_ethtool_stats(struct net_device *ndev,
}
}
-static int cpsw_common_res_usage_state(struct cpsw_common *cpsw)
+static int cpsw_get_usage_count(struct cpsw_common *cpsw)
{
u32 i;
u32 usage_count = 0;
for (i = 0; i < cpsw->data.slaves; i++)
- if (cpsw->slaves[i].open_stat)
+ if (netif_running(cpsw->slaves[i].ndev))
usage_count++;
return usage_count;
@@ -1501,8 +1500,11 @@ static int cpsw_ndo_open(struct net_device *ndev)
CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
CPSW_RTL_VERSION(reg));
- /* initialize host and slave ports */
- if (!cpsw_common_res_usage_state(cpsw))
+ /* Initialize host and slave ports.
+ * Given ndev is marked as opened already, so init port only if 1 ndev
+ * is opened
+ */
+ if (cpsw_get_usage_count(cpsw) < 2)
cpsw_init_host_port(priv);
for_each_slave(priv, cpsw_slave_open, priv);
@@ -1513,7 +1515,10 @@ static int cpsw_ndo_open(struct net_device *ndev)
cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
- if (!cpsw_common_res_usage_state(cpsw)) {
+ /* Given ndev is marked as opened already, so if more ndev
+ * are opened - no need to init shared resources.
+ */
+ if (cpsw_get_usage_count(cpsw) < 2) {
/* disable priority elevation */
__raw_writel(0, &cpsw->regs->ptype);
@@ -1556,9 +1561,6 @@ static int cpsw_ndo_open(struct net_device *ndev)
cpdma_ctlr_start(cpsw->dma);
cpsw_intr_enable(cpsw);
- if (cpsw->data.dual_emac)
- cpsw->slaves[priv->emac_port].open_stat = true;
-
return 0;
err_cleanup:
@@ -1578,7 +1580,10 @@ static int cpsw_ndo_stop(struct net_device *ndev)
netif_tx_stop_all_queues(priv->ndev);
netif_carrier_off(priv->ndev);
- if (cpsw_common_res_usage_state(cpsw) <= 1) {
+ /* Given ndev is marked as close already,
+ * so disable shared resources if no open devices
+ */
+ if (!cpsw_get_usage_count(cpsw)) {
napi_disable(&cpsw->napi_rx);
napi_disable(&cpsw->napi_tx);
cpts_unregister(cpsw->cpts);
@@ -1592,8 +1597,6 @@ static int cpsw_ndo_stop(struct net_device *ndev)
cpsw_split_res(ndev);
pm_runtime_put_sync(cpsw->dev);
- if (cpsw->data.dual_emac)
- cpsw->slaves[priv->emac_port].open_stat = false;
return 0;
}
@@ -2418,7 +2421,7 @@ static int cpsw_set_channels(struct net_device *ndev,
netif_dormant_off(slave->ndev);
}
- if (cpsw_common_res_usage_state(cpsw)) {
+ if (cpsw_get_usage_count(cpsw)) {
ret = cpsw_fill_rx_channels(priv);
if (ret)
goto err;
@@ -2537,7 +2540,7 @@ static int cpsw_set_ringparam(struct net_device *ndev,
netif_dormant_off(slave->ndev);
}
- if (cpsw_common_res_usage_state(cpsw)) {
+ if (cpsw_get_usage_count(cpsw)) {
cpdma_chan_split_pool(cpsw->dma);
ret = cpsw_fill_rx_channels(priv);
--
2.7.4
--
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