linux-kernel - [PATCH] powercap: RAPL: fix invalid initialization for pl4

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Message-Id: <20230608023006.12836-1-sumeet.r.pawnikar@intel.com>
Date:   Thu,  8 Jun 2023 08:00:06 +0530
From:   Sumeet Pawnikar <sumeet.r.pawnikar@...el.com>
To:     rafael@...nel.org, srinivas.pandruvada@...ux.intel.com,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     rui.zhang@...el.com, sumeet.r.pawnikar@...el.com
Subject: [PATCH] powercap: RAPL: fix invalid initialization for pl4_supported field

The current initialization of the struct x86_cpu_id via
pl4_support_ids[] is partial and wrong. It is initializing
"stepping" field with "X86_FEATURE_ANY" instead of "feature" field.

Use X86_MATCH_INTEL_FAM6_MODEL macro instead of initializing
each field of the struct x86_cpu_id for pl4_supported list of CPUs.
This X86_MATCH_INTEL_FAM6_MODEL macro internally uses another macro
X86_MATCH_VENDOR_FAM_MODEL_FEATURE for X86 based CPU matching with
appropriate initialized values.

Reported-by: Dave Hansen <dave.hansen@...el.com>
Closes: https://lore.kernel.org/lkml/28ead36b-2d9e-1a36-6f4e-04684e420260@intel.com/
Fixes: eb52bc2ae5b8 ("powercap: RAPL: Add Power Limit4 support for Meteor Lake SoC")
Fixes: b08b95cf30f5 ("powercap: RAPL: Add Power Limit4 support for Alder Lake-N and Raptor Lake-P")
Fixes: 515755906921 ("powercap: RAPL: Add Power Limit4 support for RaptorLake")
Fixes: 1cc5b9a411e4 ("powercap: Add Power Limit4 support for Alder Lake SoC")
Fixes: 8365a898fe53 ("powercap: Add Power Limit4 support")
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@...el.com>
---
 drivers/powercap/intel_rapl_msr.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/powercap/intel_rapl_msr.c b/drivers/powercap/intel_rapl_msr.c
index a27673706c3d..7be7561f5ad6 100644
--- a/drivers/powercap/intel_rapl_msr.c
+++ b/drivers/powercap/intel_rapl_msr.c
@@ -137,14 +137,14 @@ static int rapl_msr_write_raw(int cpu, struct reg_action *ra)
 
 /* List of verified CPUs. */
 static const struct x86_cpu_id pl4_support_ids[] = {
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_TIGERLAKE_L, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ALDERLAKE, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ALDERLAKE_L, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ALDERLAKE_N, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_RAPTORLAKE, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_RAPTORLAKE_P, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_METEORLAKE, X86_FEATURE_ANY },
-	{ X86_VENDOR_INTEL, 6, INTEL_FAM6_METEORLAKE_L, X86_FEATURE_ANY },
+	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_N, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(RAPTORLAKE_P, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE, NULL),
+	X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE_L, NULL),
 	{}
 };
 
-- 
2.17.1