* [PATCH] ARM: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled
@ 2012-07-26 12:54 Will Deacon
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From: Will Deacon @ 2012-07-26 12:54 UTC (permalink / raw)
To: linux-arm-kernel
VFPv4 support depends on the VFPv3 context save/restore code, so only
advertise support in the hwcaps if the kernel can actually handle it.
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
Pretty boring, but I guess a candidate for -stable.
arch/arm/vfp/vfpmodule.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 58696192..06137c7 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -713,8 +713,10 @@ 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;
--
1.7.4.1
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2012-07-26 12:54 [PATCH] ARM: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled Will Deacon
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