linux-kernel - [net-next v1 2/8] net: netcp: remove the redundant memmov()

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Message-ID: <1483735066-14632-3-git-send-email-m-karicheri2@ti.com>
Date:   Fri, 6 Jan 2017 15:37:40 -0500
From:   Murali Karicheri <m-karicheri2@...com>
To:     <davem@...emloft.net>, <arnd@...db.de>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <mugunthanvnm@...com>,
        <linux-omap@...r.kernel.org>, <grygorii.strashko@...com>
Subject: [net-next v1 2/8] net: netcp: remove the redundant memmov()

The psdata is populated with command data by netcp modules
to the tail of the buffer and set_words() copy the same
to the front of the psdata. So remove the redundant memmov
function call.

Signed-off-by: Murali Karicheri <m-karicheri2@...com>
---
 drivers/net/ethernet/ti/netcp_core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
index a136c56..286fd8d 100644
--- a/drivers/net/ethernet/ti/netcp_core.c
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -1226,9 +1226,9 @@ static int netcp_tx_submit_skb(struct netcp_intf *netcp,
 		/* psdata points to both native-endian and device-endian data */
 		__le32 *psdata = (void __force *)p_info.psdata;
 
-		memmove(p_info.psdata, p_info.psdata + p_info.psdata_len,
-			p_info.psdata_len);
-		set_words(p_info.psdata, p_info.psdata_len, psdata);
+		set_words((u32 *)psdata +
+			  (KNAV_DMA_NUM_PS_WORDS - p_info.psdata_len),
+			  p_info.psdata_len, psdata);
 		tmp |= (p_info.psdata_len & KNAV_DMA_DESC_PSLEN_MASK) <<
 			KNAV_DMA_DESC_PSLEN_SHIFT;
 	}
-- 
1.9.1