target/linux/brcm63xx/patches-2.6.25/070-bcm963xx_fix_uart_isr.patch

   1 From 7bc3950017d2c54883591367723b7fd84cc65d6f Mon Sep 17 00:00:00 2001
   2 From: Axel Gembe <ago@bastart.eu.org>
   3 Date: Sun, 18 May 2008 12:09:14 +0200
   4 Subject: [PATCH] bcm963xx: fix uart isr
   5
   6 The ISR ended up in an endless loop because the TX ISR never got used or masked.
   7 This patch basically makes the TX ISR mask the the TX interrupt when it
   8 encounters it, because it doesn't even use the TX interrupt.
   9
  10 Signed-off-by: Axel Gembe <ago@bastart.eu.org>
  11 ---
  12  drivers/serial/bcm63xx_cons.c |    6 ++++++
  13  1 files changed, 6 insertions(+), 0 deletions(-)
  14
  15 Index: linux-2.6.25.4/drivers/serial/bcm63xx_cons.c
  16 ===================================================================
  17 --- linux-2.6.25.4.orig/drivers/serial/bcm63xx_cons.c
  18 +++ linux-2.6.25.4/drivers/serial/bcm63xx_cons.c
  19 @@ -258,8 +258,14 @@ static void bcm_interrupt(int irq, void
  20         while (intStat) {
  21                 if (intStat & RXINT)
  22                         receive_chars(info);
  23 +
  24 +#if 0 /* This code is total bullshit, TXINT doesn't get masked anywhere, so this will give an endless loop */
  25 +
  26                 else if (intStat & TXINT)
  27                         info->port->intStatus = TXINT;
  28 +
  29 +#endif /* 0 */
  30 +
  31                 else            /* don't know what it was, so let's mask it */
  32                         info->port->intMask &= ~intStat;
  33