From: Michael Hennerich <michael.hennerich@analog.com>
Date: Mon, 24 Dec 2007 12:19:51 +0000 (+0800)
Subject: [Blackfin] arch: Fix BUG - kernel sometimes would stuck with KEYBOARD_GPIO on
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a546b0ac5988348446e4fd5987df699b4c9b1f2a;p=deliverable%2Flinux.git

[Blackfin] arch: Fix BUG - kernel sometimes would stuck with KEYBOARD_GPIO on

Make sure the SYSTEM reset completes before we issue the CORE reset

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
---

diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c
index ae28aac6fec1..06501a594dda 100644
--- a/arch/blackfin/kernel/reboot.c
+++ b/arch/blackfin/kernel/reboot.c
@@ -34,9 +34,11 @@ void bfin_reset(void)
 	while (1) {
 		/* initiate system soft reset with magic 0x7 */
 		bfin_write_SWRST(0x7);
+		bfin_read_SWRST();
 		asm("ssync;");
 		/* clear system soft reset */
 		bfin_write_SWRST(0);
+		bfin_read_SWRST();
 		asm("ssync;");
 		/* issue core reset */
 		asm("raise 1");