[PATCH] powerpc/pseries: energy driver only print message when LPAR guest
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2017-07-20 11:59:44
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This driver currently reports the H_BEST_ENERGY is unsupported even when booting in a non-LPAR environment (e.g., powernv). Prevent it. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/platforms/pseries/pseries_energy.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/pseries_energy.c b/arch/powerpc/platforms/pseries/pseries_energy.c
index 164a13d3998a..832b3d7898a3 100644
--- a/arch/powerpc/platforms/pseries/pseries_energy.c
+++ b/arch/powerpc/platforms/pseries/pseries_energy.c@@ -229,6 +229,9 @@ static int __init pseries_energy_init(void) int cpu, err; struct device *cpu_dev; + if (!firmware_has_feature(FW_FEATURE_LPAR)) + return 0; + if (!firmware_has_feature(FW_FEATURE_BEST_ENERGY)) { printk(KERN_INFO "Hypercall H_BEST_ENERGY not supported\n"); return 0;
--
2.11.0