From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 9 Oct 2009 06:24:33 +0000 (-0400)
Subject: Blackfin: reset watchdog in udelay()
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=1f003cf4738a199d99c818124784058526d2d40e;p=u-boot.git

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>
---

diff --git a/cpu/blackfin/interrupts.c b/cpu/blackfin/interrupts.c
index bf6fb4b4cf..19456e5c14 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