linux-kernel - [PATCH v1] powercap: intel_rapl_tpmi: Remove FW

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Message-ID: <20260211223401.1575776-1-sathyanarayanan.kuppuswamy@linux.intel.com>
Date: Wed, 11 Feb 2026 14:34:01 -0800
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
To: "Rafael J . Wysocki" <rafael@...nel.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Zhang Rui <rui.zhang@...el.com>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] powercap: intel_rapl_tpmi: Remove FW_BUG from invalid version check

On partitioned systems, multiple TPMI instances may exist per package,
but RAPL registers are only valid on one instance since RAPL has
package-scope control. Other instances return invalid versions during
domain parsing, which is expected behavior on such systems.

Currently this generates a firmware bug warning:
  intel_rapl_tpmi: [Firmware Bug]: Invalid version

Remove the FW_BUG tag, downgrade to pr_debug(), and update the message
to clarify that invalid versions are expected on partitioned systems
where only one instance can be valid.

Fixes: 9eef7f9da928 ("powercap: intel_rapl: Introduce RAPL TPMI interface driver")
Reported-by: Zhang Rui <rui.zhang@...el.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
---
 drivers/powercap/intel_rapl_tpmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/powercap/intel_rapl_tpmi.c b/drivers/powercap/intel_rapl_tpmi.c
index 0a0b85f4528b..0f8abdc592bc 100644
--- a/drivers/powercap/intel_rapl_tpmi.c
+++ b/drivers/powercap/intel_rapl_tpmi.c
@@ -157,7 +157,7 @@ static int parse_one_domain(struct tpmi_rapl_package *trp, u32 offset)
 	tpmi_domain_flags = tpmi_domain_header >> 32 & 0xffff;
 
 	if (tpmi_domain_version == TPMI_VERSION_INVALID) {
-		pr_warn(FW_BUG "Invalid version\n");
+		pr_debug("Invalid version, other instances may be valid\n");
 		return -ENODEV;
 	}
 
-- 
2.43.0