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 1c9d0a9d50e020fff19e31843cee6794c712b57f..3a604d7ac91db9008b1a5482adec413e08ab1b4b 100644 (file)
--- 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++)