diff mbox

[1/2] can: bfin_can: simplify xmit id1 setup

Message ID 1308925982-14645-1-git-send-email-vapier@gentoo.org
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Mike Frysinger June 24, 2011, 2:33 p.m. UTC
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>
---
 drivers/net/can/bfin_can.c |   21 ++++++---------------
 1 files changed, 6 insertions(+), 15 deletions(-)

Comments

Wolfgang Grandegger June 26, 2011, 2:14 p.m. UTC | #1
On 06/24/2011 04:33 PM, Mike Frysinger wrote:
> 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>

Thanks,

Wolfgang,
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Kurt Van Dijck June 27, 2011, 7:43 a.m. UTC | #2
On Fri, Jun 24, 2011 at 10:33:01AM -0400, Mike Frysinger wrote:
> 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>

Nice cleanup.
Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be>
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David Miller June 28, 2011, 3:42 a.m. UTC | #3
From: Kurt Van Dijck <kurt.van.dijck@eia.be>
Date: Mon, 27 Jun 2011 09:43:55 +0200

> On Fri, Jun 24, 2011 at 10:33:01AM -0400, Mike Frysinger wrote:
>> 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>
> 
> Nice cleanup.
> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index b6e890d..dc6ef4a 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) {