From patchwork Mon Sep 11 23:51:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13380573 X-Patchwork-Delegate: daniel.lezcano@linaro.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6A3BCA0EC6 for ; Tue, 12 Sep 2023 02:57:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240874AbjILC5S (ORCPT ); Mon, 11 Sep 2023 22:57:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240885AbjILC5I (ORCPT ); Mon, 11 Sep 2023 22:57:08 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B7CD8687; Mon, 11 Sep 2023 19:27:25 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85B6DC116D3; Mon, 11 Sep 2023 23:51:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1694476309; bh=O51TPHPv0vx9Va2ahIAKgXHju3NJ2XLpNP3C/snr7LI=; h=From:Date:Subject:To:Cc:From; b=X4DmisIv6DcHzbP3vH5WlTFYs1wN8/p5DZnPcRWp/5s5FRFNUNTAyHNzT8mwNgzdd p2C8M+GIzcqnbNBrI/GCohmuPkkvEBSxtFQqjj+sPkAs66hTzu3saLBZgay7HqheNn 7oQRuiHaMxJgSRJW/cwLylCnQDTu5/5Zcr+wBp+zG6Vorv+tjEk5xzcea6x7mUDhsb pp3whpY1kemWx0icdosrGg9RmxMKFmGK1CQVHzupxuDmfUGZTM6zRI8yR2Z1bPdDvw LxKe16n8GvCQ/M6/ydCmoZiM1O6gt+9ok9wiYk1/gsEUq59OBo9y/SFZf1qCBrKbnQ GtRMKLqAV5DZQ== From: Mark Brown Date: Tue, 12 Sep 2023 00:51:31 +0100 Subject: [PATCH v2] thermal/drivers/sun8i: Don't fail probe due to zone registration failure MIME-Version: 1.0 Message-Id: <20230912-thermal-sun8i-registration-v2-1-077230107768@kernel.org> X-B4-Tracking: v=1; b=H4sIAAKo/2QC/42NQQ6CMBBFr0Jm7ZiWqqAr72FYlDLARGzNFImG9 O5WTuDy/fz//gqRhCnCpVhBaOHIwWcodwW40fqBkLvMUKrSqErXOI8kDzthfPmaUWjgOIud8wy 73lhtTs7Z3kIWPIV6fm/yW5N5zNUgn+1r0b/0L+2iUaM7H1vdqkqZg7reSTxN+yADNCmlL+0zn lDFAAAA To: Vasily Khoruzhick , Yangtao Li , "Rafael J. Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: Hugh Dickins , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Mark Brown X-Mailer: b4 0.13-dev-099c9 X-Developer-Signature: v=1; a=openpgp-sha256; l=2897; i=broonie@kernel.org; h=from:subject:message-id; bh=O51TPHPv0vx9Va2ahIAKgXHju3NJ2XLpNP3C/snr7LI=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBk/6gQEtpSKlDmTGduA8wY6QsbTwt1arXoB0wF0 79/7Zyn05uJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZP+oEAAKCRAk1otyXVSH 0BaVB/9WtYVIg1ZP3KyPiDQfBXZ3V7+rCO9TPW4BwQY/t5SItapzsT/Bex46sy1RyRGkRGjgIX9 rPl9HJ39X+fPoSnQgejUs87LZ9UdvNrop3BedW5GWdZ/HS5Apu2mc7P8T07j6Gc6zEJhdCR8SeE kzC01H5zRq3swmUNuXm8fsm3pnaCjzob36wCl2l6DkPdJ/OrfqGUkT0gBNZdYnqbAq3WuOHteLE uaA4gMphJbUCGZuIvn4uZtDMXBjc7FWLsxQJMP7z7DNMJGrXpKu5kce46Vxe/PITSvHo4dBvr2X LEvJ/rRe0cDZiLipBNQ9YypCoJx9G1bII625iu3ut+zL8llZ X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Currently the sun8i thermal driver will fail to probe if any of the thermal zones it is registering fails to register with the thermal core. Since we currently do not define any trip points for the GPU thermal zones on at least A64 or H5 this means that we have no thermal support on these platforms: [ 1.698703] thermal_sys: Failed to find 'trips' node [ 1.698707] thermal_sys: Failed to find trip points for thermal-sensor id=1 even though the main CPU thermal zone on both SoCs is fully configured. This does not seem ideal, while we may not be able to use all the zones it seems better to have those zones which are usable be operational. Instead just carry on registering zones if we get any non-deferral error, allowing use of those zones which are usable. This means that we also need to update the interrupt handler to not attempt to notify the core for events on zones which we have not registered, I didn't see an ability to mask individual interrupts and I would expect that interrupts would still be indicated in the ISR even if they were masked. Reviewed-by: Vasily Khoruzhick Acked-by: Jernej Skrabec Signed-off-by: Mark Brown --- Changes in v2: - Rebase onto v6.6-rc1. - Link to v1: https://lore.kernel.org/r/20230718-thermal-sun8i-registration-v1-1-c95b1b070340@kernel.org --- drivers/thermal/sun8i_thermal.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) --- base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d change-id: 20230718-thermal-sun8i-registration-df3a136ccafa Best regards, diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c index f989b55a8aa8..14ff0346584b 100644 --- a/drivers/thermal/sun8i_thermal.c +++ b/drivers/thermal/sun8i_thermal.c @@ -188,6 +188,9 @@ static irqreturn_t sun8i_irq_thread(int irq, void *data) int i; for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) { + /* We allow some zones to not register. */ + if (IS_ERR(tmdev->sensor[i].tzd)) + continue; thermal_zone_device_update(tmdev->sensor[i].tzd, THERMAL_EVENT_UNSPECIFIED); } @@ -465,8 +468,17 @@ static int sun8i_ths_register(struct ths_device *tmdev) i, &tmdev->sensor[i], &ths_ops); - if (IS_ERR(tmdev->sensor[i].tzd)) - return PTR_ERR(tmdev->sensor[i].tzd); + + /* + * If an individual zone fails to register for reasons + * other than probe deferral (eg, a bad DT) then carry + * on, other zones might register successfully. + */ + if (IS_ERR(tmdev->sensor[i].tzd)) { + if (PTR_ERR(tmdev->sensor[i].tzd) == -EPROBE_DEFER) + return PTR_ERR(tmdev->sensor[i].tzd); + continue; + } devm_thermal_add_hwmon_sysfs(tmdev->dev, tmdev->sensor[i].tzd); }