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MIPS: BMIPS: Fix missing cbr address 

Fix NULL pointer access in BMIPS3300 RAC flush.

Fixes: 738a3f7902 ("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
Cc: <stable@vger.kernel.org> # 4.7+
Patchwork: https://patchwork.linux-mips.org/patch/16423/
Signed-off-by: James Hogan <jhogan@kernel.org>
hifive-unleashed-5.1
Jaedon Shin 2017-06-16 20:03:01 +09:00 committed by James Hogan
parent 39dae59d66
commit ea4b3afe1e
1 changed files with 2 additions and 2 deletions
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4
arch/mips/kernel/smp-bmips.c
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@ -591,11 +591,11 @@ 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);