From patchwork Tue Sep 5 18:53:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 721141 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 BCF6ECA0FFF for ; Tue, 5 Sep 2023 19:06:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235979AbjIETGc (ORCPT ); Tue, 5 Sep 2023 15:06:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232185AbjIETGc (ORCPT ); Tue, 5 Sep 2023 15:06:32 -0400 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FE81B0 for ; Tue, 5 Sep 2023 12:06:03 -0700 (PDT) Received: by mail-ed1-x532.google.com with SMTP id 4fb4d7f45d1cf-52bcd4db4cbso3910611a12.1 for ; Tue, 05 Sep 2023 12:06:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1693940696; x=1694545496; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gFpxyOwy5Bm9Qt9hRSpXKADqH+X+nrhUxL/zhVP0yhY=; b=wP9L0YVDBhvuQbebo0r6pTROXyB/R9dbTOFLNphd8PYPP6KtqIq42kW9psxjEBpW/B J+Tq8FwL6MWqewtzw+kpjQDI9nQCDeOjMffLVYjVUDSqjnYZSg+PIqzvkXDkwvT2JcoD mIeAfskdtA63bqEZNDpc8pY9OtHdMOKwFin8oZLk9GhSeEc3SFQ93SqFYARqJ7skgldD g08UJC+/TS4f3puqmqKrlGVEDFd76RDrPgEmqx+qne8n+HJvxRvogKFBqxXjx0Pamz2A smQB6IwYWxGaN5qMtWL5o8SvkcPyoIqZB/ymeDCcdsbjEhNTDkA6LQ/HFCcfomjhOzFG 1/Wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693940696; x=1694545496; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gFpxyOwy5Bm9Qt9hRSpXKADqH+X+nrhUxL/zhVP0yhY=; b=itsM7omFOuO2kuUID8wHNaC96aiV5/nRcJjN+/Z+c/ctOAMe5LvS058QhcDJU/W65l juHa5XCeR/jn0GCHeaUEjsWuuHTUOJL3xhgMmK8WXVAFXRgVV1/WuIxBPWW5QN5rk4Q9 1v1wNkbBWTJy2SSyGmV81KAsrLj5QHVFxqZc7WDN7QuFs3AvvxxzBOw3j9hAOQV3Z89H XGPjiiOaDm0HEhIGTINIdPXZWkG7lxefzHewI2Aa/Px8JRRszS2Icb+iaBq6lnPyCFud M5RyQvnkYQepeLtGN2mjxznZc0E2NHrg1pydg6fHsmdDB2T8C3N3CnrpSaBrFM6Fvzrs +HQg== X-Gm-Message-State: AOJu0YyXxFq7mdgRFLkowHzOpsjH0DqwMLOwxpzbWtv+aHbQlHIQbnzP QlNL7VkoMd9zbNGReMmzfWHp2mqsNhk4bKvWHYA= X-Google-Smtp-Source: AGHT+IFRNQIOeT3zr09E3n7bBEGrta/pNu8Vff14KdMD6sxtlr9ZDhLyFMZ76FUBno0gzmLiwhMBVA== X-Received: by 2002:a5d:5592:0:b0:317:54de:9719 with SMTP id i18-20020a5d5592000000b0031754de9719mr425005wrv.70.1693940024276; Tue, 05 Sep 2023 11:53:44 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:7a54:5dbc:6d09:48b7]) by smtp.gmail.com with ESMTPSA id 17-20020a05600c249100b003fbc30825fbsm17550010wms.39.2023.09.05.11.53.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Sep 2023 11:53:43 -0700 (PDT) From: Bartosz Golaszewski To: Aaro Koskinen , Janusz Krzysztofik , Tony Lindgren , Russell King , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , Dipen Patel , Thierry Reding , Jonathan Hunter , Hans de Goede , Mark Gross Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org, timestamp@lists.linux.dev, linux-tegra@vger.kernel.org, platform-driver-x86@vger.kernel.org, Bartosz Golaszewski Subject: [RFT PATCH 15/21] arm: omap1: ams-delta: stop using gpiochip_find() Date: Tue, 5 Sep 2023 20:53:03 +0200 Message-Id: <20230905185309.131295-16-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230905185309.131295-1-brgl@bgdev.pl> References: <20230905185309.131295-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Bartosz Golaszewski gpiochip_find() is going away as it's not hot-unplug safe. This platform is not affected by any of the related problems as this GPIO controller cannot really go away but in order to finally remove this function, we need to convert it to using gpio_device_find() as well. Signed-off-by: Bartosz Golaszewski --- arch/arm/mach-omap1/board-ams-delta.c | 36 +++++++++++++-------------- 1 file changed, 17 insertions(+), 19 deletions(-) diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c index 9808cd27e2cf..a28ea6ac1eba 100644 --- a/arch/arm/mach-omap1/board-ams-delta.c +++ b/arch/arm/mach-omap1/board-ams-delta.c @@ -560,22 +560,6 @@ static struct gpiod_lookup_table *ams_delta_gpio_tables[] __initdata = { &ams_delta_nand_gpio_table, }; -/* - * Some drivers may not use GPIO lookup tables but need to be provided - * with GPIO numbers. The same applies to GPIO based IRQ lines - some - * drivers may even not use GPIO layer but expect just IRQ numbers. - * We could either define GPIO lookup tables then use them on behalf - * of those devices, or we can use GPIO driver level methods for - * identification of GPIO and IRQ numbers. For the purpose of the latter, - * defina a helper function which identifies GPIO chips by their labels. - */ -static int gpiochip_match_by_label(struct gpio_chip *chip, void *data) -{ - char *label = data; - - return !strcmp(label, chip->label); -} - static struct gpiod_hog ams_delta_gpio_hogs[] = { GPIO_HOG(LATCH2_LABEL, LATCH2_PIN_KEYBRD_DATAOUT, "keybrd_dataout", GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW), @@ -615,14 +599,28 @@ static void __init modem_assign_irq(struct gpio_chip *chip) */ static void __init omap_gpio_deps_init(void) { + struct gpio_device *gdev; struct gpio_chip *chip; - chip = gpiochip_find(OMAP_GPIO_LABEL, gpiochip_match_by_label); - if (!chip) { - pr_err("%s: OMAP GPIO chip not found\n", __func__); + /* + * Some drivers may not use GPIO lookup tables but need to be provided + * with GPIO numbers. The same applies to GPIO based IRQ lines - some + * drivers may even not use GPIO layer but expect just IRQ numbers. + * We could either define GPIO lookup tables then use them on behalf + * of those devices, or we can use GPIO driver level methods for + * identification of GPIO and IRQ numbers. + * + * This reference will be leaked but that's alright as this device + * never goes down. + */ + gdev = gpio_device_find_by_label(OMAP_GPIO_LABEL); + if (!gdev) { + pr_err("%s: OMAP GPIO device not found\n", __func__); return; } + chip = gpio_device_get_chip(gdev); + /* * Start with FIQ initialization as it may have to request * and release successfully each OMAP GPIO pin in turn.