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From 2e7d18a213b94e4aeded7f35b7cd0d02b9b661cd Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Fri, 25 Jul 2008 23:04:37 +0100
Subject: [PATCH] gta01-dehang-printk.patch
This is a temporary work-around Mike Westerhof for this bug:
http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=788
See also
http://lists.openmoko.org/pipermail/openmoko-kernel/2008-February/000804.html
(It's the 2nd option.)
We may settle on a different solution in the future, depending on
feedback from upstream.
---
drivers/serial/s3c2410.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 7117110..bd87c79 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -1720,9 +1720,18 @@ static void
s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
{
unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+ unsigned int umcon = rd_regl(cons_uart, S3C2410_UMCON);
+
+ /* If auto HW flow control enabled, temporarily turn it off */
+ if (umcon & S3C2410_UMCOM_AFC)
+ wr_regl(port, S3C2410_UMCON, (umcon & !S3C2410_UMCOM_AFC));
+
while (!s3c24xx_serial_console_txrdy(port, ufcon))
barrier();
wr_regb(cons_uart, S3C2410_UTXH, ch);
+
+ if (umcon & S3C2410_UMCOM_AFC)
+ wr_regl(port, S3C2410_UMCON, umcon);
}
static void
--
1.5.6.3
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