diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-09-11 09:30:19 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:07 +0100 |
| commit | d175ed2bd6544474dcc99d74f8155c2ba44e8db2 (patch) | |
| tree | d4c3f724b8dbc6a0bf85216d0afe36bb23eed219 | |
| parent | MIPS: detect presence of the FRE & UFR bits (diff) | |
| download | linux-d175ed2bd6544474dcc99d74f8155c2ba44e8db2.tar.xz linux-d175ed2bd6544474dcc99d74f8155c2ba44e8db2.zip | |
MIPS: Ensure Config5.UFE is clear on boot
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>
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index d76f189291bc..d68ad96392f8 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -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) |