blackfin-old-serial-sysrq.patch

   1 --- bfin_serial_5xx.c
   2 +++ bfin_serial_5xx.c
   3 @@ -17,6 +17,7 @@
   4   * $Id: bfin_serial_5xx.c,v 1.80 2006/10/12 03:16:38 sonicz Exp $
   5   */
   6
   7 +#include <linux/sysrq.h>
   8  #include <linux/module.h>
   9  #include <linux/tty.h>
  10  #include <linux/tty_flip.h>
  11 @@ -650,9 +651,10 @@ static void receive_chars(struct bfin_se
  12         struct tty_struct *tty = info->tty;
  13         unsigned char ch = 0, flag = 0;
  14         unsigned short status = 0;
  15 -#if defined(CONFIG_BF531) || defined(CONFIG_BF532) || defined(CONFIG_BF533)
  16 -       static int in_break=0;
  17 +#ifdef CONFIG_MAGIC_SYSRQ
  18 +       static int in_break = 0;
  19  #endif
  20 +
  21         FUNC_ENTER();
  22
  23  #ifdef CONFIG_BFIN_UART_CTSRTS
  24 @@ -665,16 +667,13 @@ static void receive_chars(struct bfin_se
  25                 ACCESS_PORT_IER(uart_regs);
  26                 ch = (unsigned char)bfin_read16(uart_regs->rpUART_RBR);
  27
  28 -               if (!tty) {
  29 +               if (!tty)
  30                         goto clear_and_exit;
  31 -               }
  32
  33 -#if defined(CONFIG_BF531) || defined(CONFIG_BF532) || defined(CONFIG_BF533)
  34 +#ifdef CONFIG_MAGIC_SYSRQ
  35                 if (in_break) {
  36 -                       if(ch!=0) {
  37 -                               ch = (unsigned char)bfin_read16(uart_regs->rpUART_RBR);
  38 -                               in_break = 0;
  39 -                       }
  40 +                       handle_sysrq(ch, regs, NULL);
  41 +                       in_break = 0;
  42                         goto clear_and_exit;
  43                 }
  44  #endif
  45 @@ -683,7 +682,7 @@ static void receive_chars(struct bfin_se
  46                 if (status & BI) {
  47                         flag = TTY_BREAK;
  48                         status_handle(info, status);
  49 -#if defined(CONFIG_BF531) || defined(CONFIG_BF532) || defined(CONFIG_BF533)
  50 +#ifdef CONFIG_MAGIC_SYSRQ
  51                         in_break = 1;
  52  #endif
  53                 } else if (status & PE) {
  54 @@ -696,6 +695,7 @@ static void receive_chars(struct bfin_se
  55                         flag = TTY_FRAME;
  56                         status_handle(info, status);
  57                 }
  58 +
  59                 tty_insert_flip_char(tty, ch, flag);
  60         }
  61         tty_flip_buffer_push(tty);