diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-07-11 17:44:35 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-08-02 00:06:44 +0200 |
| commit | 762a1f4388a22690cd4f848ba858e5f02d4bfc22 (patch) | |
| tree | 899750a406e47a67945d1525be4bd2e7a6f6a5aa /arch/mips/include/asm/fpu.h | |
| parent | MIPS: ensure MSA gets disabled during boot (diff) | |
| download | linux-762a1f4388a22690cd4f848ba858e5f02d4bfc22.tar.xz linux-762a1f4388a22690cd4f848ba858e5f02d4bfc22.zip | |
MIPS: disable preemption whilst initialising MSA
Preemption must be disabled throughout the process of enabling the FPU,
enabling MSA & initialising the vector registers. Without doing so it
is possible to lose the FPU or MSA whilst initialising them causing
that initialisation to fail.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7307/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/fpu.h')
| -rw-r--r-- | arch/mips/include/asm/fpu.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h index 71d97ebd9090..4d0aeda68397 100644 --- a/arch/mips/include/asm/fpu.h +++ b/arch/mips/include/asm/fpu.h @@ -164,8 +164,6 @@ static inline int init_fpu(void) { int ret = 0; - preempt_disable(); - if (cpu_has_fpu) { ret = __own_fpu(); if (!ret) @@ -173,8 +171,6 @@ static inline int init_fpu(void) } else fpu_emulator_init_fpu(); - preempt_enable(); - return ret; } |