target/linux/pxa/patches-2.6.21/030-serial-divisor.patch

   1 Index: linux-2.6.21.7/drivers/serial/pxa.c
   2 ===================================================================
   3 --- linux-2.6.21.7.orig/drivers/serial/pxa.c
   4 +++ linux-2.6.21.7/drivers/serial/pxa.c
   5 @@ -41,6 +41,7 @@
   6  #include <linux/platform_device.h>
   7  #include <linux/tty.h>
   8  #include <linux/tty_flip.h>
   9 +#include <linux/serial.h>
  10  #include <linux/serial_core.h>
  11
  12  #include <asm/io.h>
  13 @@ -577,8 +578,16 @@ static void serial_pxa_config_port(struc
  14  static int
  15  serial_pxa_verify_port(struct uart_port *port, struct serial_struct *ser)
  16  {
  17 -       /* we don't want the core code to modify any port params */
  18 -       return -EINVAL;
  19 +       struct uart_pxa_port *up = (struct uart_pxa_port *)port;
  20 +       int ret = 0;
  21 +
  22 +       if (up->port.uartclk / 16 != ser->baud_base)
  23 +               ret = -EINVAL;
  24 +       else if (((up->port.line & 1) == 0) && ser->baud_base > 230400) /* Max baud rate for STUART and FFUART */
  25 +               ret = -EINVAL;
  26 +       else if (((up->port.line & 1) != 0) && ser->baud_base > 921600) /* Max baud rate for HWUART and BTUART */
  27 +               ret = -EINVAL;
  28 +       return ret;
  29  }
  30
  31  static const char *