From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 82A78392800 for ; Mon, 2 Mar 2026 09:59:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772445548; cv=none; b=JDVsQ000JGPo4r8TWSWUhVTph4LTUCqRiK+ufaaQTeVihEe4AKTqFd/pwgIw1C4sttkoQ/txDqT2A7KDt4LiiWc9ztwK5MhXA7hRZL9xnnySiA1b8b2DojLOlKKjJIPqkW40M92LBsPtgAQcUeHIVszrLa2f2vgANY9oVsD3Kpw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772445548; c=relaxed/simple; bh=eRJWGojM49Ji/+2iZ0H6trQJMLyUoGk/ENbpTtxpdOE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=VgP3jSeYzhXoVPPHmNz9JxiY+1yY8d+aelBQc63pCqJIaNdSDM43HaSbkyYJyP6kmKdhEHry2VJUaJPLqhoiBcRRy/2V+Cetk/Qb721NAJSm77fXtOhpJS2wLVOJNwHn/+ObLVCaKxBaBuHHjIKez++XqGHU5jLMgIQzPWnxAn8= 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=RY1ksUu/; arc=none smtp.client-ip=198.175.65.9 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="RY1ksUu/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772445544; x=1803981544; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=eRJWGojM49Ji/+2iZ0H6trQJMLyUoGk/ENbpTtxpdOE=; b=RY1ksUu/RjwZ0F9o1eEUFd1me47k6enzHHOu3N7XFrefQXAj0vPgttqu bHQ2rjqasDYJOLEEB8n6F8AaGjMpAzZLUlhqTMrKAc/eAbm1tDtLtSmAR IU3nKmhkxvOvCNDvpsuUpqpn3bVGe2u2WNJkrsaKrZASvMthWgQHYCwRt Jjg91qvFQKiBhI0b5MD3FuV6P9GmmwKuWgBM5bwu7jXB2PYJrhlGMoYJK p+o0cEN1hEtbHOnyI5bZwp/gu36FsRFF9xglSDfAiJED7oWDpfrkmSLvz Bpj/mTTpRlXKhK+xEkKaKXyBr+QStAxezDJrr1dAD5UDo+vAZOUhOsNyy w==; X-CSE-ConnectionGUID: kAEIpDZUSqakWo2uwkNv0w== X-CSE-MsgGUID: w7XZ153+RlCg3Dp239XKkw== X-IronPort-AV: E=McAfee;i="6800,10657,11716"; a="96066040" X-IronPort-AV: E=Sophos;i="6.21,319,1763452800"; d="scan'208";a="96066040" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2026 01:58:52 -0800 X-CSE-ConnectionGUID: b0KjjVgESZWNnRQDWxqE2g== X-CSE-MsgGUID: WHxmzjh/TcCwcGTqJER82Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,319,1763452800"; d="scan'208";a="217628236" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa008.jf.intel.com with ESMTP; 02 Mar 2026 01:58:51 -0800 Received: by black.igk.intel.com (Postfix, from userid 1003) id EE13C95; Mon, 02 Mar 2026 10:58:49 +0100 (CET) From: Andy Shevchenko To: Mark Brown , Andy Shevchenko , linux-kernel@vger.kernel.org, driver-core@lists.linux.dev Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Subject: [PATCH v4 0/3] regcache: Avoid accessing non-initialised cache Date: Mon, 2 Mar 2026 10:56:54 +0100 Message-ID: <20260302095847.2310066-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Refactor regcache flow that populates cache on initialisation phase based on the values in HW. This makes code robust against any possible accesses to not-fully initialised caches. Changelog v4: - made conditional against 'count' to make it less dependent to the previous code path v3: 20260226135918.381979-1-andriy.shevchenko@linux.intel.com Changelog v3: - dropped unneeded churn in patch 3 (Mark) - fixed code to pass kunit test cases (Mark) v2: 20260225161659.3811671-1-andriy.shevchenko@linux.intel.com Changelog v2: - rebased on top of the latest regmap changes (Mark) - added two more little cleanups (patches 4 & 5) Andy Shevchenko (3): regcache: Move HW readback after cache initialisation regcache: Define iterator inside for-loop and align their types regcache: Amend printf() specifiers when printing registers drivers/base/regmap/internal.h | 2 +- drivers/base/regmap/regcache.c | 42 ++++++++++++++++++++-------------- 2 files changed, 26 insertions(+), 18 deletions(-) -- 2.50.1