From 4db60563fc106eaf97fb4ab101590bdb9282670f Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 18 May 2008 17:31:35 +0000 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 SVN-Revision: 11179 --- .../070-bcm963xx_fix_uart_isr.patch | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 target/linux/brcm63xx/patches-2.6.25/070-bcm963xx_fix_uart_isr.patch 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 index 0000000000..8345e2abaa --- /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 +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 +--- + 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 + -- 2.25.1