From: Jaedon Shin <jaedon.shin@gmail.com>
Date: Fri, 16 Jun 2017 11:03:01 +0000 (+0900)
Subject: MIPS: BMIPS: Fix missing cbr address
X-Git-Tag: v4.13.13~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=243fcd24f06e8b0923b6d17196b4ddbf6ab86fd6;p=thirdparty%2Fkernel%2Fstable.git

MIPS: BMIPS: Fix missing cbr address

commit ea4b3afe1eac8f88bb453798a084fba47a1f155a upstream.

Fix NULL pointer access in BMIPS3300 RAC flush.

Fixes: 738a3f79027b ("MIPS: BMIPS: Add early CPU initialization code")
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16423/
Signed-off-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 1b070a76fcdd4..5e0d87f4958fe 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -589,11 +589,11 @@ void __init bmips_cpu_setup(void)
 
 		/* Flush and enable RAC */
 		cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG);
-		__raw_writel(cfg | 0x100, BMIPS_RAC_CONFIG);
+		__raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG);
 		__raw_readl(cbr + BMIPS_RAC_CONFIG);
 
 		cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG);
-		__raw_writel(cfg | 0xf, BMIPS_RAC_CONFIG);
+		__raw_writel(cfg | 0xf, cbr + BMIPS_RAC_CONFIG);
 		__raw_readl(cbr + BMIPS_RAC_CONFIG);
 
 		cfg = __raw_readl(cbr + BMIPS_RAC_ADDRESS_RANGE);