From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BCA7364E89; Thu, 11 Jun 2026 04:35:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781152504; cv=none; b=ilR9VQgXMv6XH0TQrqiQZAT76JRt6aZkOEqdh26Q5DyvxbpWqv8hn9X+cRzeX+hieaCNelinhfCFrM37DVsEFkVbqLfLvpZN4+uPcPHrXAtaWPf3vOLrNpxGI7Bv/EMTu7RGkusAg+xpqMScZ4iJ3TGMBIUf+VmbrOJ7qaI4Oi4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781152504; c=relaxed/simple; bh=3KpxF3J7XCmuAo4iEeERTk5piuUIg0wIC7lQgX0yEVU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rpSZK1j/1hBWBOedVMf/qR8z+kR0SSa5pEh61cZQovLkNUnX7Pgo0DrHM4dBQWYrBdJCTIS9/fAtMS7LyzQLXUjwxTVQuFyexAJlV2Eao/jljkUqixwpqER9huZXcX+v4eSDv+W3LhExQh+h/JNdFamtN33rz/N6WLd5NhjEopU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=XNd7xH2h; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XNd7xH2h" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1781152502; x=1812688502; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3KpxF3J7XCmuAo4iEeERTk5piuUIg0wIC7lQgX0yEVU=; b=XNd7xH2hWL08qLS9FQ1I+dULSAUtN+vrvnkcfi9L14S9YZQJUoYzTMOP z8OTdTAffPuAkHyMWBJQ8eyi6rffuOKcYjsb/zDKyGMgpBuS4vaEB4PFI AtvWUP0b09IBy227HYgoU/yNu0r+LkIW45bQF1pRU1OnYJnSxm10Nx6/B 2wTqaiYExGbEFRnoxyMgs0up0wiFz7TnoWoFNhkxtxjYEMRgtng84JRiD 3Zl+jxJfjQHVREZAhLlRhbPkEJsVEmctPK4mT7/rT/Rpt6CppA/VT9meT ywotg6sIw4ZWQDuELM3jkPyS8J7OwTHax0fplVS66ZVGk24QVQgcaB04m A==; X-CSE-ConnectionGUID: J4MKV+2RR42VytPZeUyMmQ== X-CSE-MsgGUID: xS99OtERS6+LipRrYZxJrQ== X-IronPort-AV: E=McAfee;i="6800,10657,11813"; a="84531025" X-IronPort-AV: E=Sophos;i="6.24,198,1774335600"; d="scan'208";a="84531025" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2026 21:34:56 -0700 X-CSE-ConnectionGUID: jLfkhQ62RXiYxkJyYWdJ+Q== X-CSE-MsgGUID: mDdm2yikS6OG1Vp5L3/1IQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,198,1774335600"; d="scan'208";a="251468355" Received: from debox1-desk4.jf.intel.com ([10.88.27.138]) by fmviesa005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2026 21:34:56 -0700 From: "David E. Box" To: hansg@kernel.org, ilpo.jarvinen@linux.intel.com, irenic.rajneesh@gmail.com Cc: "David E. Box" , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, srinivas.pandruvada@linux.intel.com, xi.pardee@linux.intel.com Subject: [PATCH v7 14/15] platform/x86/intel/pmc/ssram: Make PMT registration optional Date: Wed, 10 Jun 2026 21:34:42 -0700 Message-ID: <7e3dfe5c626db0bbba2885bbec6f1b223094d0e1.1781146840.git.david.e.box@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable The SSRAM telemetry driver extracts essential PMC device ID and power management base address information that intel_pmc_core depends on for core functionality. If PMT registration failure prevents this critical data from being available, intel_pmc_core operation would break entirely. Therefore, PMT registration failures must not block access to this data. Change the behavior to log a warning when PMT registration fails but continue with successful driver initialization, ensuring the primary telemetry data remains accessible to dependent drivers. Signed-off-by: David E. Box --- V7 - No changes V6 - No changes V5 - No changes V4 - No changes V3 changes: - Dropped the standalone cleanup-pattern patch from this refreshed series retaining the simpler ssram pointer flow requested in review. - Folded PMT-registration-optional handling onto that simpler flow with no intended functional change. V2 changes: - Update commit message for clarity - Also apply the PCI telemetry path drivers/platform/x86/intel/pmc/ssram_telemetry.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/intel/pmc/ssram_telemetry.c b/drivers/pla= tform/x86/intel/pmc/ssram_telemetry.c index 35c6f0261567..2095df6a42b2 100644 --- a/drivers/platform/x86/intel/pmc/ssram_telemetry.c +++ b/drivers/platform/x86/intel/pmc/ssram_telemetry.c @@ -194,7 +194,7 @@ pmc_ssram_telemetry_get_pmc_pci(struct pci_dev *pcidev, /* Find and register and PMC telemetry entries */ ret =3D pmc_ssram_telemetry_add_pmt(pcidev, ssram_base, ssram); if (ret) - return ret; + dev_warn(&pcidev->dev, "could not register PMT\n"); =20 probe_cache->valid_mask |=3D BIT(pmc_idx); =20 @@ -287,7 +287,7 @@ static int pmc_ssram_telemetry_acpi_init(struct pci_dev= *pcidev, =20 ret =3D intel_vsec_register(&pcidev->dev, &info); if (ret) - return ret; + dev_warn(&pcidev->dev, "could not register PMT\n"); =20 return pmc_ssram_telemetry_get_pmc_acpi(pcidev, probe_cache, index); } --=20 2.43.0