From 1f003cf4738a199d99c818124784058526d2d40e Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 9 Oct 2009 02:24:33 -0400
Subject: [PATCH] Blackfin: reset watchdog in udelay()
All arches apparently should reset the watchdog in their udelay loop as
noted on the mailing list recently:
> A comment in flash_status_check() suggests that udelay() is
> expected to reset the watchdog, but I can't find any architecture
> where it does.
If this is missing in other architectures, it should be fixed at the
root cause, i. e. in udelay() or in the respective support routines.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
cpu/blackfin/interrupts.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/cpu/blackfin/interrupts.c b/cpu/blackfin/interrupts.c
index bf6fb4b4cf3..19456e5c147 100644
--- a/cpu/blackfin/interrupts.c
+++ b/cpu/blackfin/interrupts.c
@@ -20,6 +20,7 @@
#include <common.h>
#include <config.h>
+#include <watchdog.h>
#include <asm/blackfin.h>
#include "cpu.h"
@@ -70,6 +71,8 @@ void udelay(unsigned long usec)
cclk = (CONFIG_CCLK_HZ);
while (usec > 1) {
+ WATCHDOG_RESET();
+
/*
* how many clock ticks to delay?
* - request(in useconds) * clock_ticks(Hz) / useconds/second
--
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