From: Paul Fulghum <paulkf@microgate.com>
Date: Fri, 9 Sep 2005 20:02:17 +0000 (-0700)
Subject: [PATCH] synclinkmp.c: fix async internal loopback
X-Git-Tag: v2.6.14-rc1~440
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6e8dcee3e63f5a2cba4affff4bbb6e228f4b258a;p=platform%2Fkernel%2Flinux-exynos.git

[PATCH] synclinkmp.c: fix async internal loopback

Fix async internal loopback by not using enable_loopback function which
reprograms clocking and should only be used for hdlc mode.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index eb31a3b..6fb165c 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -4479,11 +4479,13 @@ void async_mode(SLMP_INFO *info)
 	/* MD2, Mode Register 2
 	 *
 	 * 07..02  Reserved, must be 0
-	 * 01..00  CNCT<1..0> Channel connection, 0=normal
+	 * 01..00  CNCT<1..0> Channel connection, 00=normal 11=local loopback
 	 *
 	 * 0000 0000
 	 */
 	RegValue = 0x00;
+	if (info->params.loopback)
+		RegValue |= (BIT1 + BIT0);
 	write_reg(info, MD2, RegValue);
 
 	/* RXS, Receive clock source
@@ -4564,9 +4566,6 @@ void async_mode(SLMP_INFO *info)
 	write_reg(info, IE2, info->ie2_value);
 
 	set_rate( info, info->params.data_rate * 16 );
-
-	if (info->params.loopback)
-		enable_loopback(info,1);
 }
 
 /* Program the SCA for HDLC communications.