bcm963xx: fix uart isr

The ISR ended up in an endless loop because the TX ISR never got used or masked.
This patch basically makes the TX ISR mask the the TX interrupt when it
encounters it, because it doesn't even use the TX interrupt.

Signed-off-by: Axel Gembe <ago@bastart.eu.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11179 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/brcm63xx/patches-2.6.25/070-bcm963xx_fix_uart_isr.patch b/target/linux/brcm63xx/patches-2.6.25/070-bcm963xx_fix_uart_isr.patch
new file mode 100644 (file)
index 0000000..8345e2a
--- /dev/null
+++ b/target/linux/brcm63xx/patches-2.6.25/070-bcm963xx_fix_uart_isr.patch
@@ -0,0 +1,36 @@
+From 7bc3950017d2c54883591367723b7fd84cc65d6f Mon Sep 17 00:00:00 2001
+From: Axel Gembe <ago@bastart.eu.org>
+Date: Sun, 18 May 2008 12:09:14 +0200
+Subject: [PATCH] bcm963xx: fix uart isr
+
+The ISR ended up in an endless loop because the TX ISR never got used or masked.
+This patch basically makes the TX ISR mask the the TX interrupt when it
+encounters it, because it doesn't even use the TX interrupt.
+
+Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+---
+ drivers/serial/bcm63xx_cons.c |    6 ++++++
+ 1 files changed, 6 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/serial/bcm63xx_cons.c b/drivers/serial/bcm63xx_cons.c
+index 2302ea6..c60b8f0 100644
+--- a/drivers/serial/bcm63xx_cons.c
++++ b/drivers/serial/bcm63xx_cons.c
+@@ -258,8 +258,14 @@ static void bcm_interrupt(int irq, void *dev, struct pt_regs *regs)
+       while (intStat) {
+               if (intStat & RXINT)
+                       receive_chars(info);
++
++#if 0 /* This code is total bullshit, TXINT doesn't get masked anywhere, so this will give an endless loop */
++
+               else if (intStat & TXINT)
+                       info->port->intStatus = TXINT;
++
++#endif /* 0 */
++
+               else            /* don't know what it was, so let's mask it */
+                       info->port->intMask &= ~intStat;
+ 
+-- 
+1.5.5.1
+