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* - atmel_serial-use-existing-console-options-only-if-brg-is-running.patch removed from -mm tree
@ 2008-02-08 20:18 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2008-02-08 20:18 UTC (permalink / raw)
  To: hskinnemoen, linux, marc.pignat, mm-commits


The patch titled
     atmel_serial: use existing console options only if BRG is running
has been removed from the -mm tree.  Its filename was
     atmel_serial-use-existing-console-options-only-if-brg-is-running.patch

This patch was dropped because it was merged into mainline or a subsystem tree

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: atmel_serial: use existing console options only if BRG is running
From: Haavard Skinnemoen <hskinnemoen@atmel.com>

If BRGR is zero, the baud rate generator isn't running, so the boot loader
can't have initialized the port.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Tested-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/serial/atmel_serial.c |   15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff -puN drivers/serial/atmel_serial.c~atmel_serial-use-existing-console-options-only-if-brg-is-running drivers/serial/atmel_serial.c
--- a/drivers/serial/atmel_serial.c~atmel_serial-use-existing-console-options-only-if-brg-is-running
+++ a/drivers/serial/atmel_serial.c
@@ -834,13 +834,13 @@ static void __init atmel_console_get_opt
 {
 	unsigned int mr, quot;
 
-// TODO: CR is a write-only register
-//	unsigned int cr;
-//
-//	cr = UART_GET_CR(port) & (ATMEL_US_RXEN | ATMEL_US_TXEN);
-//	if (cr == (ATMEL_US_RXEN | ATMEL_US_TXEN)) {
-//		/* ok, the port was enabled */
-//	}
+	/*
+	 * If the baud rate generator isn't running, the port wasn't
+	 * initialized by the boot loader.
+	 */
+	quot = UART_GET_BRGR(port);
+	if (!quot)
+		return;
 
 	mr = UART_GET_MR(port) & ATMEL_US_CHRL;
 	if (mr == ATMEL_US_CHRL_8)
@@ -860,7 +860,6 @@ static void __init atmel_console_get_opt
 	 * lower than one of those, as it would make us fall through
 	 * to a much lower baud rate than we really want.
 	 */
-	quot = UART_GET_BRGR(port);
 	*baud = port->uartclk / (16 * (quot - 1));
 }
 
_

Patches currently in -mm which might be from hskinnemoen@atmel.com are

origin.patch
git-avr32.patch

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2008-02-08 20:18 - atmel_serial-use-existing-console-options-only-if-brg-is-running.patch removed from -mm tree akpm

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