code.vuplus.com Git - vuplus_openembedded/blob - packages/linux/linux-davinci-2.6.25/8250_davinci.patch

   1 --- linux-2.6/drivers/serial/8250.c     2008-08-06 15:56:53.000000000 -0500
   2 +++ linux-2.6-vanilla/drivers/serial/8250.c     2008-08-07 12:24:29.000000000 -0500
   3 @@ -1867,7 +1867,6 @@
   4         }
   5
   6         if (is_real_interrupt(up->port.irq)) {
   7 -               unsigned char iir1;
   8                 /*
   9                  * Test for UARTs that do not reassert THRE when the
  10                  * transmitter is idle and the interrupt has already
  11 @@ -1881,7 +1880,7 @@
  12                 wait_for_xmitr(up, UART_LSR_THRE);
  13                 serial_out_sync(up, UART_IER, UART_IER_THRI);
  14                 udelay(1); /* allow THRE to set */
  15 -               iir1 = serial_in(up, UART_IIR);
  16 +               serial_in(up, UART_IIR);
  17                 serial_out(up, UART_IER, 0);
  18                 serial_out_sync(up, UART_IER, UART_IER_THRI);
  19                 udelay(1); /* allow a working UART time to re-assert THRE */
  20 @@ -1894,7 +1893,7 @@
  21                  * If the interrupt is not reasserted, setup a timer to
  22                  * kick the UART on a regular basis.
  23                  */
  24 -               if (!(iir1 & UART_IIR_NO_INT) && (iir & UART_IIR_NO_INT)) {
  25 +               if (iir & UART_IIR_NO_INT) {
  26                         pr_debug("ttyS%d - using backup timer\n", port->line);
  27                         up->timer.function = serial8250_backup_timeout;
  28                         up->timer.data = (unsigned long)up;