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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-06-06 01:46:39 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-06-06 14:29:12 -0400
commit9c81c5c95c00c35a328e1757ca45a66647105f6c (patch)
tree1854f2b91e64a3a7bd7f5b1c7f8d52a8ee75204c /drivers/serial
parent81c6ce9bd3ed3a88caeb9ed97d874450d53339dc (diff)
atmel_serial: filter out FP during baud rate detection
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> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/atmel_serial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index c065a704a93a..42be8b01a40f 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,
1318 * If the baud rate generator isn't running, the port wasn't 1318 * If the baud rate generator isn't running, the port wasn't
1319 * initialized by the boot loader. 1319 * initialized by the boot loader.
1320 */ 1320 */
1321 quot = UART_GET_BRGR(port); 1321 quot = UART_GET_BRGR(port) & ATMEL_US_CD;
1322 if (!quot) 1322 if (!quot)
1323 return; 1323 return;
1324 1324