commit adeff42236aec0601ec979d1a41cd6d9cf5a8c05
author Catalin Marinas <catalin.marinas@arm.com> Mon Apr 10 21:32:35 2006 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> Mon Apr 10 21:32:35 2006 +0100
tree 52691b790e036de0a4f311f6ecef84f66a6796ae
parent 7359036d5cdb86d14cfeb06d0e5a1d68f85cf8b7

[ARM] 3470/1: Clear the HWCAP bits for the disabled kernel features

Patch from Catalin Marinas

Glibc interprets the HWCAP bits and decides on what features to use.
However, even if the features are present in the hardware, they are not
always supported by the kernel and hence the corresponding bits have to be
cleared from the elf_hwcap variable.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/setup.c

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 4375284..8cff73e 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -322,6 +322,12 @@
 	sprintf(system_utsname.machine, "%s%c", list->arch_name, ENDIANNESS);
 	sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);
 	elf_hwcap = list->elf_hwcap;
+#ifndef CONFIG_ARM_THUMB
+	elf_hwcap &= ~HWCAP_THUMB;
+#endif
+#ifndef CONFIG_VFP
+	elf_hwcap &= ~HWCAP_VFP;
+#endif
 
 	cpu_proc_init();
 }