From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 24 Jun 2011 04:33:01 +0000 (+0000)
Subject: can: bfin_can: simplify xmit id1 setup
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9118f08a7794e9a4908afbb0f9bc9455325a5631;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

can: bfin_can: simplify xmit id1 setup

If we look closely, the 4 writes to TRANSMIT_CHL.id1 can be collapsed
down into much simpler code.  So do just that.

This also fixes a build failure due to the I/O macros no longer
getting pulled in.  Their minor (and accidental) usage here gets
dropped as part of the unification.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index b6e890d28366..dc6ef4a9e02a 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -243,21 +243,12 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	/* fill id */
 	if (id & CAN_EFF_FLAG) {
 		bfin_write16(&reg->chl[TRANSMIT_CHL].id0, id);
-		if (id & CAN_RTR_FLAG)
-			writew(((id & 0x1FFF0000) >> 16) | IDE | AME | RTR,
-					&reg->chl[TRANSMIT_CHL].id1);
-		else
-			writew(((id & 0x1FFF0000) >> 16) | IDE | AME,
-					&reg->chl[TRANSMIT_CHL].id1);
-
-	} else {
-		if (id & CAN_RTR_FLAG)
-			writew((id << 2) | AME | RTR,
-				&reg->chl[TRANSMIT_CHL].id1);
-		else
-			bfin_write16(&reg->chl[TRANSMIT_CHL].id1,
-					(id << 2) | AME);
-	}
+		val = ((id & 0x1FFF0000) >> 16) | IDE;
+	} else
+		val = (id << 2);
+	if (id & CAN_RTR_FLAG)
+		val |= RTR;
+	bfin_write16(&reg->chl[TRANSMIT_CHL].id1, val | AME);
 
 	/* fill payload */
 	for (i = 0; i < 8; i += 2) {