[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 eb31a3b865df2003b5d2f171ee6d4222818530a2..6fb165cf8a61ca0ca4be7532e00909f342bb4f03 100644 (file)
--- 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.