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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2016-04-19 13:35:55 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2016-04-19 20:42:26 +0200 |
| commit | ac36a881b72a1e9831f1c59abf935868c90685cf (patch) | |
| tree | 82589bea053c019bd8f5745fbfe8a677555a8beb /arch/arm/include/asm | |
| parent | ARM: 8563/1: fix demoting HWCAP_SWP (diff) | |
| download | linux-ac36a881b72a1e9831f1c59abf935868c90685cf.tar.xz linux-ac36a881b72a1e9831f1c59abf935868c90685cf.zip | |
ARM: 8564/1: fix cpu feature extracting helper
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed
quantities" introduced helper to extract signed quantities of 4-bit
blocks. However, with a current code feature with value 0b1000 isn't
rejected as negative. So fix the "if" condition.
Reported-by: Jonathan Brawn <Jon.Brawn@arm.com>
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/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/cputype.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index b23c6c81c9ad..1ee94c716a7f 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -276,7 +276,7 @@ static inline int __attribute_const__ cpuid_feature_extract_field(u32 features, int feature = (features >> field) & 15; /* feature registers are signed values */ - if (feature > 8) + if (feature > 7) feature -= 16; return feature; |