brcm63xx: fix crash on 6358/6368 when booting from thread 1

It looks like RAC flushes cause random corruption(?) when the
second thread is set as default.

Fixes #20160.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 46563
This commit is contained in:
Jonas Gorski 2015-08-05 13:55:42 +00:00
parent a105688c87
commit 3368b4799b

View file

@ -0,0 +1,49 @@
From 1b02e59087d3de3953d3fa0536356e3e137bf74b Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue, 28 Jul 2015 19:24:24 -0700
Subject: [PATCH] Revert "MIPS: BCM63xx: Provide a plat_post_dma_flush hook"
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit
This reverts commit 3cf29543413207d3ab1c3f62a88c09bb46f2264e ("MIPS:
BCM63xx: Provide a plat_post_dma_flush hook") since this commit was
found to prevent BCM6358 (early BMIPS4350 cores) and some BCM6368
(BMIPS4380 cores) from booting reliably.
Alvaro was able to track this down to an issue specifically located to
devices that use the second thread (TP1) when booting. Since BCM63xx did
not have a need for plat_post_dma_flush() hook before, let's just keep
things the way they were.
CC: stable@vger.kernel.org
CC: Kevin Cernekee <cernekee@gmail.com>
CC: Nicolas Schichan <nschichan@freebox.fr>
Reported-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reported-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/include/asm/mach-bcm63xx/dma-coherence.h | 10 ----------
1 file changed, 10 deletions(-)
delete mode 100644 arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
diff --git a/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h b/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
deleted file mode 100644
index 11d3b57..0000000
--- a/arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef __ASM_MACH_BCM63XX_DMA_COHERENCE_H
-#define __ASM_MACH_BCM63XX_DMA_COHERENCE_H
-
-#include <asm/bmips.h>
-
-#define plat_post_dma_flush bmips_post_dma_flush
-
-#include <asm/mach-generic/dma-coherence.h>
-
-#endif /* __ASM_MACH_BCM63XX_DMA_COHERENCE_H */
--
2.1.4