[PATCH net-next 0/4] cpsw cleanups

[PATCH net-next 0/4] cpsw cleanups

[Richard Cochran]

While working on an out-of-tree customization, I noticed a few minor
problems in the cpsw code.  This series cleans up the issues I found.

Thanks,
Richard


Richard Cochran (4):
  net: cpsw: fix misplaced break statements.
  net: cpsw: remove two unused global functions
  net: cpsw: remove redundant calls enabling dma interrupts.
  net: cpsw: remove redundant calls disabling dma interrupts.

 drivers/net/ethernet/ti/cpsw.c     |  9 ++------
 drivers/net/ethernet/ti/cpsw_ale.c | 45 --------------------------------------
 drivers/net/ethernet/ti/cpsw_ale.h |  2 --
 3 files changed, 2 insertions(+), 54 deletions(-)

-- 
2.1.4

[PATCH net-next 1/4] net: cpsw: fix misplaced break statements.

[Richard Cochran]

Having the breaks too far to the left makes parsing the dense switch/case
block unnecessarily harder.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 drivers/net/ethernet/ti/cpsw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index b536b4c..e9e3ab3 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1456,7 +1456,7 @@ static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
 
 		if (priv->cpts->rx_enable)
 			ctrl |= CTRL_V2_RX_TS_BITS;
-	break;
+		break;
 	case CPSW_VERSION_3:
 	default:
 		ctrl &= ~CTRL_V3_ALL_TS_MASK;
@@ -1466,7 +1466,7 @@ static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
 
 		if (priv->cpts->rx_enable)
 			ctrl |= CTRL_V3_RX_TS_BITS;
-	break;
+		break;
 	}
 
 	mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
-- 
2.1.4

[PATCH net-next 2/4] net: cpsw: remove two unused global functions

[Richard Cochran]

The funtions, cpsw_ale_flush and cpsw_ale_set_ageout, have never been used
since they were first introduced.  This patch removes the dead code.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 drivers/net/ethernet/ti/cpsw_ale.c | 45 --------------------------------------
 drivers/net/ethernet/ti/cpsw_ale.h |  2 --
 2 files changed, 47 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 6e927b4..43b061b 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -268,39 +268,6 @@ int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask, int vid)
 }
 EXPORT_SYMBOL_GPL(cpsw_ale_flush_multicast);
 
-static void cpsw_ale_flush_ucast(struct cpsw_ale *ale, u32 *ale_entry,
-				 int port_mask)
-{
-	int port;
-
-	port = cpsw_ale_get_port_num(ale_entry);
-	if ((BIT(port) & port_mask) == 0)
-		return; /* ports dont intersect, not interested */
-	cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);
-}
-
-int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask)
-{
-	u32 ale_entry[ALE_ENTRY_WORDS];
-	int ret, idx;
-
-	for (idx = 0; idx < ale->params.ale_entries; idx++) {
-		cpsw_ale_read(ale, idx, ale_entry);
-		ret = cpsw_ale_get_entry_type(ale_entry);
-		if (ret != ALE_TYPE_ADDR && ret != ALE_TYPE_VLAN_ADDR)
-			continue;
-
-		if (cpsw_ale_get_mcast(ale_entry))
-			cpsw_ale_flush_mcast(ale, ale_entry, port_mask);
-		else
-			cpsw_ale_flush_ucast(ale, ale_entry, port_mask);
-
-		cpsw_ale_write(ale, idx, ale_entry);
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(cpsw_ale_flush);
-
 static inline void cpsw_ale_set_vlan_entry_type(u32 *ale_entry,
 						int flags, u16 vid)
 {
@@ -752,18 +719,6 @@ static void cpsw_ale_timer(unsigned long arg)
 	}
 }
 
-int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout)
-{
-	del_timer_sync(&ale->timer);
-	ale->ageout = ageout * HZ;
-	if (ale->ageout) {
-		ale->timer.expires = jiffies + ale->ageout;
-		add_timer(&ale->timer);
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(cpsw_ale_set_ageout);
-
 void cpsw_ale_start(struct cpsw_ale *ale)
 {
 	u32 rev;
diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h
index af1e7ec..a700189 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -90,8 +90,6 @@ int cpsw_ale_destroy(struct cpsw_ale *ale);
 void cpsw_ale_start(struct cpsw_ale *ale);
 void cpsw_ale_stop(struct cpsw_ale *ale);
 
-int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout);
-int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask);
 int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask, int vid);
 int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port,
 		       int flags, u16 vid);
-- 
2.1.4

[PATCH net-next 3/4] net: cpsw: remove redundant calls enabling dma interrupts.

[Richard Cochran]

The function, cpsw_intr_enable, already calls cpdma_ctlr_int_ctrl.  There
is no need to enable the dma interrupts twice.  This patch removes the
extra call.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 drivers/net/ethernet/ti/cpsw.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index e9e3ab3..0d0cf9a 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1592,7 +1592,6 @@ static void cpsw_ndo_tx_timeout(struct net_device *ndev)
 	cpdma_ctlr_int_ctrl(priv->dma, false);
 	cpdma_chan_stop(priv->txch);
 	cpdma_chan_start(priv->txch);
-	cpdma_ctlr_int_ctrl(priv->dma, true);
 	cpsw_intr_enable(priv);
 }
 
@@ -1632,7 +1631,6 @@ static void cpsw_ndo_poll_controller(struct net_device *ndev)
 	cpdma_ctlr_int_ctrl(priv->dma, false);
 	cpsw_rx_interrupt(priv->irqs_table[0], priv);
 	cpsw_tx_interrupt(priv->irqs_table[1], priv);
-	cpdma_ctlr_int_ctrl(priv->dma, true);
 	cpsw_intr_enable(priv);
 }
 #endif
-- 
2.1.4

[PATCH net-next 4/4] net: cpsw: remove redundant calls disabling dma interrupts.

[Richard Cochran]

The function, cpsw_intr_disable, already calls cpdma_ctlr_int_ctrl.  There
is no need to disable the dma interrupts twice.  This patch removes the
extra calls.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 drivers/net/ethernet/ti/cpsw.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 0d0cf9a..4628205 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1361,7 +1361,6 @@ static int cpsw_ndo_stop(struct net_device *ndev)
 	if (cpsw_common_res_usage_state(priv) <= 1) {
 		cpts_unregister(priv->cpts);
 		cpsw_intr_disable(priv);
-		cpdma_ctlr_int_ctrl(priv->dma, false);
 		cpdma_ctlr_stop(priv->dma);
 		cpsw_ale_stop(priv->ale);
 	}
@@ -1589,7 +1588,6 @@ static void cpsw_ndo_tx_timeout(struct net_device *ndev)
 	cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
 	ndev->stats.tx_errors++;
 	cpsw_intr_disable(priv);
-	cpdma_ctlr_int_ctrl(priv->dma, false);
 	cpdma_chan_stop(priv->txch);
 	cpdma_chan_start(priv->txch);
 	cpsw_intr_enable(priv);
@@ -1628,7 +1626,6 @@ static void cpsw_ndo_poll_controller(struct net_device *ndev)
 	struct cpsw_priv *priv = netdev_priv(ndev);
 
 	cpsw_intr_disable(priv);
-	cpdma_ctlr_int_ctrl(priv->dma, false);
 	cpsw_rx_interrupt(priv->irqs_table[0], priv);
 	cpsw_tx_interrupt(priv->irqs_table[1], priv);
 	cpsw_intr_enable(priv);
-- 
2.1.4

Re: [PATCH net-next 0/4] cpsw cleanups

[David Miller]

From: Richard Cochran <richardcochran@gmail.com>
Date: Mon, 25 May 2015 11:02:12 +0200

> While working on an out-of-tree customization, I noticed a few minor
> problems in the cpsw code.  This series cleans up the issues I found.

Series applied, thanks Richard.