From: Pratik Rajesh Sampat <psampat@linux.ibm.com>
Date: Tue, 21 Jul 2020 15:37:06 +0000 (+0530)
Subject: powerpc/powernv/idle: Replace CPU feature check with PVR check
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8747bf36f312356f8a295a0c39ff092d65ce75ae;p=linux.git

powerpc/powernv/idle: Replace CPU feature check with PVR check

The POWER9 idle driver contains implementation-specific details that
means it is not suitable to run on any processor that implements ISA
v3.0 (e.g., POWER10), so only init the driver when running on a
POWER9.

Signed-off-by: Pratik Rajesh Sampat <psampat@linux.ibm.com>
[mpe: Use updated change log from Nick]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200721153708.89057-2-psampat@linux.ibm.com
---

diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index 1c9d0a9d50e02..3a604d7ac91db 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -1223,7 +1223,7 @@ static void __init pnv_probe_idle_states(void)
 		return;
 	}
 
-	if (cpu_has_feature(CPU_FTR_ARCH_300))
+	if (pvr_version_is(PVR_POWER9))
 		pnv_power9_idle_init();
 
 	for (i = 0; i < nr_pnv_idle_states; i++)