linux-kernel - [PATCH 4.9 73/87] MIPS: BMIPS: Fix missing cbr address

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Date:   Mon, 13 Nov 2017 13:56:30 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jaedon Shin <jaedon.shin@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Kevin Cernekee <cernekee@...il.com>, linux-mips@...ux-mips.org,
        James Hogan <jhogan@...nel.org>
Subject: [PATCH 4.9 73/87] MIPS: BMIPS: Fix missing cbr address

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jaedon Shin <jaedon.shin@...il.com>

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@...il.com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Cc: Kevin Cernekee <cernekee@...il.com>
Cc: linux-mips@...ux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16423/
Signed-off-by: James Hogan <jhogan@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/kernel/smp-bmips.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -587,11 +587,11 @@ 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);