[PATCH] synclink.c: add loopback to async mode

Add internal loopback support for asynchronous mode operation.

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/synclink.c b/drivers/char/synclink.c
index 26b421b74bb61246b8a7b5504b8cc8fc55223ee8..ea2d54be4843e07c17efc83ebf14a6677e599a5d 100644 (file)
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -6151,6 +6151,11 @@ static void usc_set_async_mode( struct mgsl_struct *info )
                usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12));
        }
 
+       if (info->params.loopback) {
+               info->loopback_bits = 0x300;
+               outw(0x0300, info->io_base + CCAR);
+       }
+
 }      /* end of usc_set_async_mode() */
 
 /* usc_loopback_frame()