From 4d6c2a677fe5a903ed6483865cc14ff00a2054b5 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 7 Mar 2017 16:53:03 +0100 Subject: [PATCH] net: mvpp2: remove mvpp2_txq_pend_desc_num_get() function The mvpp2_txq_pend_desc_num_get() function only selects a TX queue, and reads the number of pending descriptors. It is used in only one place, in mvpp2_txq_clean(), where the TX queue has already been selected by a write to MVPP2_TXQ_NUM_REG. Therefore, this function is useless, and the caller can simply read the value of the MVPP2_TXQ_PENDING_REG register instead. Signed-off-by: Thomas Petazzoni Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvpp2.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c index 60cc020..9ddda20 100644 --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -4123,18 +4123,6 @@ static u32 mvpp2_bm_cookie_build(struct mvpp2_rx_desc *rx_desc) /* Tx descriptors helper methods */ -/* Get number of Tx descriptors waiting to be transmitted by HW */ -static int mvpp2_txq_pend_desc_num_get(struct mvpp2_port *port, - struct mvpp2_tx_queue *txq) -{ - u32 val; - - mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id); - val = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG); - - return val & MVPP2_TXQ_PENDING_MASK; -} - /* Get pointer to next Tx descriptor to be processed (send) by HW */ static struct mvpp2_tx_desc * mvpp2_txq_next_desc_get(struct mvpp2_tx_queue *txq) @@ -4740,7 +4728,8 @@ static void mvpp2_txq_clean(struct mvpp2_port *port, struct mvpp2_tx_queue *txq) mdelay(1); delay++; - pending = mvpp2_txq_pend_desc_num_get(port, txq); + pending = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG) & + MVPP2_TXQ_PENDING_MASK; } while (pending); val &= ~MVPP2_TXQ_DRAIN_EN_MASK; -- 2.7.4