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authorVladimir Murzin <vladimir.murzin@arm.com>2016-04-19 12:35:20 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2016-04-19 19:42:25 +0100
commit03f1217e5fafac8eb9e28aa8d04a67b6db1e435b (patch)
treef0895cec056814b8b0b3946c1f8b2a78df0291fc /arch
parent9c18fcf7ae0ef87f0723dfd74c27d608c7486e0e (diff)
downloadlinux-sh-03f1217e5fafac8eb9e28aa8d04a67b6db1e435b.tar.gz
ARM: 8563/1: fix demoting HWCAP_SWP
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed quantities" accidentally altered cpuid register used to demote HWCAP_SWP. ARM ARM says that SyncPrim_instrs bits in ID_ISAR3 should be used with SynchPrim_instrs_frac from ID_ISAR4. So, follow this rule. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/setup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index a28fce0bdbbe..2c4bea39cf22 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -512,7 +512,7 @@ static void __init elf_hwcap_fixup(void)
*/
if (cpuid_feature_extract(CPUID_EXT_ISAR3, 12) > 1 ||
(cpuid_feature_extract(CPUID_EXT_ISAR3, 12) == 1 &&
- cpuid_feature_extract(CPUID_EXT_ISAR3, 20) >= 3))
+ cpuid_feature_extract(CPUID_EXT_ISAR4, 20) >= 3))
elf_hwcap &= ~HWCAP_SWP;
}