From patchwork Tue Mar 5 05:04:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 13581611 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C501144361 for ; Tue, 5 Mar 2024 05:05:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709615105; cv=none; b=ZmjBwjDFekt1pIC+2xqvGlmgE1lBddkO0EzPusa4mm6pyeKmdx9veE6yb085q3Ot9G2Gg/nUOMzei7kRZtn5sV7M92vj80aPuBY1HLhgLI67fOPidF7mUFxaRHMIjsKFt1GXvAwH7fc58Cp3GxwopSyO/yK0JtfbReGhEvC2RZY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709615105; c=relaxed/simple; bh=MAU1kWPqdnXGrNHYK3e1ZUDdxmqyA52aEjVKNf7L97s=; h=Date:Message-Id:Mime-Version:Subject:From:To:Cc:Content-Type; b=rFzMnDSYyAq098C6+vzqwszkUVQBnje9R3EkLNC8T8woFujE8+9n86aOv44ns0b8GCU2/J2mY/O2cf5saJ1dkcvgXgUCeglCAEacH0NEPEGDNti7fiiiPT/KtzEGl+PA7aDNWuxOi5EI/7MOGpZ1QLZ6lpgDVxBuxE4HJDbeZa4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Ts+ff8gv; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Ts+ff8gv" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dcc05887ee9so7220917276.1 for ; Mon, 04 Mar 2024 21:05:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709615103; x=1710219903; darn=vger.kernel.org; h=cc:to:from:subject:mime-version:message-id:date:from:to:cc:subject :date:message-id:reply-to; bh=Q4xpip56iqsz0ZA+qjMQdeYvZuGJ4xYG5vF66MG0lag=; b=Ts+ff8gvPAXuRVEUHnF5LhhM2KBRL97o//wcOi+dva5TtUSU/SIm+4HKuCyZtwP42z hYYEcCMTb4qwCtlm/8RVWZRsV29Cti9Rid5yB2qeNjqFwURHKTmh/WxztubD0khaJpfh qxm5QoHqv6M5ypgvknUeZW8lBbp3fRsjPeb2BakOe63DpCP4CW0mHEtwqXzl5F1rrGc8 qYF16GIKA3Oh3X5SbjYOO1HTW25/6sRvms9p8UkWs25VfeI+UCTJXVkCFtmASW/lX2ug WmTXix8GqYRlH0yBFMEke8Q8p4xsgIzTxZr+3tlcP+7E3HbI5Eb54blp/T/PzB1rKG+F 5oVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709615103; x=1710219903; h=cc:to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Q4xpip56iqsz0ZA+qjMQdeYvZuGJ4xYG5vF66MG0lag=; b=YrHEKnQCrNsSaMMEywjhU5L+2nP9MBOSKksS9oLqqpVJe+2rNXa+RkCaIlyKtiqetU g3bnJLFhMEwUiFWE1DjO8H5K9updmlpDECYT8jxgbCugIeBvhi3Zt9weePj0LJ6jizt1 hC8AZ364Wlg3Dam+HztIzmQmjIx5Xupva+E/KI5n5adUMutKap/1chiqT+Pv2x6UnR2Y 26LVROYxwqlDrGZ1FmqJgpSUaqUr1XE98XRMBpjK9geDTGDyWzd4nkb1om+B/rTSbzmp 2z3Ikpcu2IWCrtY6HTPujC5KkrHnQj4dtFOOXzKsDd9rikwri8iAisfld4Dy+89VYA8j jXjg== X-Forwarded-Encrypted: i=1; AJvYcCUgSoX2+XBCpJ6deXJD/4hfCjbRG3+TmZwaIqvCq94iGhKRbYuEhQTiS++dxoST1HpoMXVDxWaEki9+mzhbd2P8t2yIglIYY5XoOA== X-Gm-Message-State: AOJu0YyQD0QOoud2Cx+/r1yOmE2zftyE7aplfU9T4DgKa4VsHrPmWtnj DcQ7nvid4OsdB3UXT/VDRlF9A2oJ7NeWI9TCdVTMh0YoYyZ22pP44wIRB9boW9hJ+ortCs3nkT2 5cazUuqXKy126QQ== X-Google-Smtp-Source: AGHT+IFo+LnxDdPsW+MOrOqUjpVCkgB+n9r+MxXeQAnbHnQl5NgTJGxOR5lY11wswnsYWorkDIHWiDj499TxTto= X-Received: from saravanak.san.corp.google.com ([2620:15c:2d:3:d64:6ee3:55a9:46e6]) (user=saravanak job=sendgmr) by 2002:a05:6902:70d:b0:dc6:c94e:fb85 with SMTP id k13-20020a056902070d00b00dc6c94efb85mr376493ybt.2.1709615102823; Mon, 04 Mar 2024 21:05:02 -0800 (PST) Date: Mon, 4 Mar 2024 21:04:53 -0800 Message-Id: <20240305050458.1400667-1-saravanak@google.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v5 0/3] Add post-init-providers binding to improve suspend/resume stability From: Saravana Kannan To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Ard Biesheuvel , Rob Herring , Frank Rowand , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Len Brown Cc: Saravana Kannan , kernel-team@android.com, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org Greg, Can you pull this in as part of your tree please? Thanks, Saravana This patch series adds a "post-init-providers" device tree binding that can be used to break dependency cycles in device tree and enforce a more determinstic probe/suspend/resume order. This will also improve the stability of global async probing and async suspend/resume and allow us to enable them more easily. Yet another step away from playing initcall chicken with probing and step towards fully async probing and suspend/resume. dtschema update for post-init-providers will have a more substantial documentation of the examples and the need for this property. v4->v5: - As suggesed by reviewers, removed line wraps to go > 80 chars. - Added Reviewed-by and Acked-by - Dropped the DT schema documentation patch (will submit tha to dtschema) v3->v4: - Fixed MAINTAINERS file to go with the file rename. v2->v3: - Changes doc/code from "post-init-supplier" to "post-init-providers" - Fixed some wording that was ambiguous for Conor. - Fixed indentation, additionalProperies and white space issues in the yaml syntax. - Fixed syntax errors in the example. v1->v2: - Addressed Documentation/commit text errors pointed out by Rob - Reordered MAINTAINERS chunk as pointed out by Krzysztof Saravana Kannan (3): driver core: Adds flags param to fwnode_link_add() driver core: Add FWLINK_FLAG_IGNORE to completely ignore a fwnode link of: property: fw_devlink: Add support for "post-init-providers" property drivers/base/core.c | 14 +++++++++++--- drivers/firmware/efi/sysfb_efi.c | 2 +- drivers/of/property.c | 15 ++++++++++++--- include/linux/fwnode.h | 5 ++++- 4 files changed, 28 insertions(+), 8 deletions(-)