lkml.org 
[lkml]   [2008]   [May]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] atmel_serial: Filter out FP during baud rate detection
Date
I made a change to u-boot that used the FP (Fractional Part) field of
BRGR to achieve more accurate baud rate generation. Unfortunately, the
atmel_serial driver looks at the whole BRGR register when trying to
detect the baud rate that the port is currently running at, so setting
FP to a nonzero value breaks the baud rate detection.

I'll sit on the u-boot patch for a while longer, but this is clearly a
bug in the atmel_serial driver which should be fixed.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
---
drivers/serial/atmel_serial.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index c065a70..42be8b0 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -1318,7 +1318,7 @@ static void __init atmel_console_get_options(struct uart_port *port, int *baud,
* If the baud rate generator isn't running, the port wasn't
* initialized by the boot loader.
*/
- quot = UART_GET_BRGR(port);
+ quot = UART_GET_BRGR(port) & ATMEL_US_CD;
if (!quot)
return;

--
1.5.5.1


\
 
 \ /
  Last update: 2008-05-27 15:27    [from the cache]
©2003-2011 Jasper Spaans