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: 13374995 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 91D4ACA0FFF for ; Tue, 5 Sep 2023 19:09:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241751AbjIETJo (ORCPT ); Tue, 5 Sep 2023 15:09:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241984AbjIETJj (ORCPT ); Tue, 5 Sep 2023 15:09:39 -0400 Received: from mail-ed1-x52c.google.com (mail-ed1-x52c.google.com [IPv6:2a00:1450:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C4CBD2 for ; Tue, 5 Sep 2023 12:09:12 -0700 (PDT) Received: by mail-ed1-x52c.google.com with SMTP id 4fb4d7f45d1cf-52a4737a08fso3907718a12.3 for ; Tue, 05 Sep 2023 12:09:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1693940861; x=1694545661; 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=xThce8eLesIpfz8oQoRcAhjcbiXPHTw7ct+7C12CBPf+IrFFG2sOEtmJEReQDszGrG j0Lb6gcetOWULp4vtL6Hv+iPGxw9u2NJ6kxrakQqOqsIcxlc5oVZVLRoULQ8DE/JFrQ1 FEFR/Om7M432TZQU/YNFh971WVOt/kOHm3aYVDLyG4PwdBXWiPISGDohqF9tDSohKXWk t6k1T78jNG5D7B2tK0k2DfrtH1zakC2K1KU+3LiMByLYJxVcURxAyzdI//h1H9jH7BVz YJVtZdP96BiQGsSjODn/5L7ffwxOr84O7XCWgBHOeUQpwEKTn5qIiAqkEzoSzmW+rMrc ntQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693940861; x=1694545661; 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=K1ElW6lv9r17+BVHaoFMpOUi1ZgTXneRjprkQQi6XAGrbshnnbKmv9H3QavZF4R1zG iLckVbP66uD5gKvBafHKJxeP96vukNPOeAfmEifIEBWZNvz1nuZvdMpuy6Wsl1OJB6pK IUHErxi4E/be7cJyQSHvoNm9HhfiMza6QvD/adTifIG5WEAjLJVe8U8teVhzbLB1DD0j sDB9gjXqgsCcZROZf3JW8dCzaAMNntmvCRRETQs9uBwP+g0cuGuOqoe3BxWCHmoM7xZk LGmdyYnh1XbEbl6OVfJYGx/7tk15ACyjFneeCEoaL0SbjACyeB9A9zMczlxTJRl1Mmlr KtaQ== X-Gm-Message-State: AOJu0Yw+0r8+D/oRClpjjTNdCZ2e3LlUirnYioe++LkATW6okFvvUEK+ SdizDpDqXNZJFt9k0lk5mLtXBQSQ8Nnu4ZpQbho= 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: platform-driver-x86@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 Reviewed-by: Linus Walleij Acked-by: Janusz Krzysztofik Acked-by: Tony Lindgren --- 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.