[PATCH v7 062/120] x86/acpi/cstate: Use MWAIT helper macros

Use <asm/mwait.h> MWAIT_HINT2CSTATE() instead of open-coding its logic.

No functional change.

Signed-off-by: Ahmed S. Darwish <[email protected]>
---
 arch/x86/kernel/acpi/cstate.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index dbdacfbf53bd..4e7142d977c8 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -132,8 +132,7 @@ static long acpi_processor_ffh_cstate_probe_cpu(void *_cx)
 	cpuid(CPUID_LEAF_MWAIT, &eax, &ebx, &ecx, &edx);
 
 	/* Check whether this particular cx_type (in CST) is supported or not */
-	cstate_type = (((cx->address >> MWAIT_SUBSTATE_SIZE) &
-			MWAIT_CSTATE_MASK) + 1) & MWAIT_CSTATE_MASK;
+	cstate_type = (MWAIT_HINT2CSTATE(cx->address) + 1) & MWAIT_CSTATE_MASK;
 	edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE);
 	num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
 
-- 
2.54.0