linux-kernel - [PATCH 03/11] serial: bfin_5xx: IRDA is not affected by anomaly 05000230

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Date:	Fri,  4 Jun 2010 13:47:49 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Graf Yang <graf.yang@...log.com>,
	Mike Frysinger <vapier@...too.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 03/11] serial: bfin_5xx: IRDA is not affected by anomaly 05000230

From: Graf Yang <graf.yang@...log.com>

Anomaly 05000230 (over sampling of the UART STOP bit) applies only when
the peripheral is operating in UART mode.  So drop the anomaly handling
when the UART is in IRDA mode.

Signed-off-by: Graf Yang <graf.yang@...log.com>
Signed-off-by: Mike Frysinger <vapier@...too.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/serial/bfin_5xx.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 96f7e74..a78652b 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -869,7 +869,12 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 	}
 
 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-	quot = uart_get_divisor(port, baud) - ANOMALY_05000230;
+	quot = uart_get_divisor(port, baud);
+
+	/* If discipline is not IRDA, apply ANOMALY_05000230 */
+	if (termios->c_line != N_IRDA)
+		quot -= ANOMALY_05000230;
+
 	spin_lock_irqsave(&uart->port.lock, flags);
 
 	UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
-- 
1.7.1

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