From patchwork Thu Mar 17 01:24:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar Mahadev Lad X-Patchwork-Id: 552384 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 AE202C433FE for ; Thu, 17 Mar 2022 01:24:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358275AbiCQBZp (ORCPT ); Wed, 16 Mar 2022 21:25:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350066AbiCQBZk (ORCPT ); Wed, 16 Mar 2022 21:25:40 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5019E1E3CA; Wed, 16 Mar 2022 18:24:21 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.90,188,1643641200"; d="scan'208";a="114675301" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 17 Mar 2022 10:24:21 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 58DFD41A45A3; Thu, 17 Mar 2022 10:24:18 +0900 (JST) From: Lad Prabhakar To: Thomas Gleixner , Marc Zyngier , Rob Herring , Linus Walleij , Bartosz Golaszewski , Geert Uytterhoeven , Philipp Zabel Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [RFC PATCH v4 3/5] gpio: gpiolib: Allow free() callback to be overridden Date: Thu, 17 Mar 2022 01:24:02 +0000 Message-Id: <20220317012404.8069-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220317012404.8069-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20220317012404.8069-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Allow free() callback to be overridden from irq_domain_ops for hierarchical chips. This allows drivers to free any resources which are allocated during populate_parent_alloc_arg(). Signed-off-by: Lad Prabhakar --- drivers/gpio/gpiolib.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index defb7c464b87..aede442f610d 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1187,15 +1187,18 @@ static void gpiochip_hierarchy_setup_domain_ops(struct irq_domain_ops *ops) ops->activate = gpiochip_irq_domain_activate; ops->deactivate = gpiochip_irq_domain_deactivate; ops->alloc = gpiochip_hierarchy_irq_domain_alloc; - ops->free = irq_domain_free_irqs_common; /* - * We only allow overriding the translate() function for + * We only allow overriding the translate() and free() function for * hierarchical chips, and this should only be done if the user - * really need something other than 1:1 translation. + * really need something other than 1:1 translation for translate() + * callback and free if user wants to free up any resources which + * were allocated during callbacks for example populate_parent_alloc_arg. */ if (!ops->translate) ops->translate = gpiochip_hierarchy_irq_domain_translate; + if (!ops->free) + ops->free = irq_domain_free_irqs_common; } static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc)