target/linux/s3c24xx/patches-2.6.24/1069-gta01-dehang-printk.patch.patch

   1 From f76a7a9e4e1cf2224e028e78a6869d3e8375dbe3 Mon Sep 17 00:00:00 2001
   2 From: mokopatches <mokopatches@openmoko.org>
   3 Date: Sun, 13 Apr 2008 07:23:58 +0100
   4 Subject: [PATCH] gta01-dehang-printk.patch
   5  This is a temporary work-around Mike Westerhof for this bug:
   6  http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=788
   7
   8 See also
   9 http://lists.openmoko.org/pipermail/openmoko-kernel/2008-February/000804.html
  10
  11 (It's the 2nd option.)
  12
  13 We may settle on a different solution in the future, depending on
  14 feedback from upstream.
  15 ---
  16  drivers/serial/s3c2410.c |    9 +++++++++
  17  1 files changed, 9 insertions(+), 0 deletions(-)
  18
  19 diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
  20 index 6c93a1b..b566f42 100644
  21 --- a/drivers/serial/s3c2410.c
  22 +++ b/drivers/serial/s3c2410.c
  23 @@ -1717,9 +1717,18 @@ static void
  24  s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
  25  {
  26         unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
  27 +       unsigned int umcon = rd_regl(cons_uart, S3C2410_UMCON);
  28 +
  29 +       /* If auto HW flow control enabled, temporarily turn it off */
  30 +       if (umcon & S3C2410_UMCOM_AFC)
  31 +               wr_regl(port, S3C2410_UMCON, (umcon & !S3C2410_UMCOM_AFC));
  32 +
  33         while (!s3c24xx_serial_console_txrdy(port, ufcon))
  34                 barrier();
  35         wr_regb(cons_uart, S3C2410_UTXH, ch);
  36 +
  37 +       if (umcon & S3C2410_UMCOM_AFC)
  38 +               wr_regl(port, S3C2410_UMCON, umcon);
  39  }
  40
  41  static void
  42 --
  43 1.5.6.5
  44