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ARM: 7483/1: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled

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VFPv4 support depends on the VFPv3 context save/restore code, so only
advertise support in the hwcaps if the kernel can actually handle it.

Cc: <stable@vger.kernel.org> # 3.1+
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2012-08-03 17:24:14 +01:00 committed by Russell King
parent f7e416eb92
commit 3d9fb0038a
1 changed files with 2 additions and 0 deletions
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2
arch/arm/vfp/vfpmodule.c
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@ -719,8 +719,10 @@ static int __init vfp_init(void)
if ((fmrx(MVFR1) & 0x000fff00) == 0x00011100)
elf_hwcap |= HWCAP_NEON;
#endif
#ifdef CONFIG_VFPv3
if ((fmrx(MVFR1) & 0xf0000000) == 0x10000000)
elf_hwcap |= HWCAP_VFPv4;
#endif
}
}
return 0;