The decode_config4() function reads kscratch_mask from CP0_Config4.KScrExist using a hard coded shift and mask. We already have a definition for the mask in mipsregs.h, so add a definition for the shift and make use of them. Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Cc: linux-mips@xxxxxxxxxxxxxx --- arch/mips/include/asm/mipsregs.h | 3 ++- arch/mips/kernel/cpu-probe.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 08864cbbb27b..480d51550dc0 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -615,7 +615,8 @@ #define MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT (_ULCAST_(1) << 14) #define MIPS_CONF4_MMUEXTDEF_FTLBSIZEEXT (_ULCAST_(2) << 14) #define MIPS_CONF4_MMUEXTDEF_VTLBSIZEEXT (_ULCAST_(3) << 14) -#define MIPS_CONF4_KSCREXIST (_ULCAST_(255) << 16) +#define MIPS_CONF4_KSCREXIST_SHIFT (16) +#define MIPS_CONF4_KSCREXIST (_ULCAST_(255) << MIPS_CONF4_KSCREXIST_SHIFT) #define MIPS_CONF4_VTLBSIZEEXT_SHIFT (24) #define MIPS_CONF4_VTLBSIZEEXT (_ULCAST_(15) << MIPS_CONF4_VTLBSIZEEXT_SHIFT) #define MIPS_CONF4_AE (_ULCAST_(1) << 28) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 316c4d7dd7ae..6a9a55444f38 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -799,7 +799,8 @@ static inline unsigned int decode_config4(struct cpuinfo_mips *c) } } - c->kscratch_mask = (config4 >> 16) & 0xff; + c->kscratch_mask = (config4 & MIPS_CONF4_KSCREXIST) + >> MIPS_CONF4_KSCREXIST_SHIFT; asid_mask = MIPS_ENTRYHI_ASID; if (config4 & MIPS_CONF4_AE) -- 2.4.10
