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MIPS: Ensure Config5.UFE is clear on boot

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As is done for UFR, ensure that userland cannot directly manipulate the
mode by clearing the UFE bit during boot.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7677/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton 2014-09-11 08:30:19 +01:00 committed by Ralf Baechle
parent adac5d535d
commit d175ed2bd6
1 changed files with 1 additions and 1 deletions
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2
arch/mips/kernel/cpu-probe.c
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@ -461,7 +461,7 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
unsigned int config5;
config5 = read_c0_config5();
config5 &= ~MIPS_CONF5_UFR;
config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE);
write_c0_config5(config5);
if (config5 & MIPS_CONF5_EVA)