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MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU

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Commit 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
added support for 64-bit FPU on a 32-bit MIPS R6 processor but it missed
the 64-bit CPU case leading to FPU failures when requesting FR=1 mode
(which is always the case for MIPS R6 userland) when running a 32-bit
kernel on a 64-bit CPU. We also fix the MIPS R2 case.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10734/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Markos Chandras 2015-07-16 15:30:04 +01:00 committed by Ralf Baechle
parent dd0bc75ee3
commit fcc53b5f6c
1 changed files with 1 additions and 1 deletions
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2
arch/mips/include/asm/fpu.h
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@ -74,7 +74,7 @@ static inline int __enable_fpu(enum fpu_mode mode)
goto fr_common;
case FPU_64BIT:
#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS32_R6) \
#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) \
|| defined(CONFIG_64BIT))
/* we only have a 32-bit FPU */
return SIGFPE;