From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 27B6CCCFA05 for ; Fri, 7 Nov 2025 12:36:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+fmg7PmnlG7E63l7CWyD5KVv/JEe7XxJb00UjlKQCbs=; b=LJv8dm+TqpZqKgKHVWqtOmnTsN p+jc/D/y2fBBss8v8hFGbwOTA4am5os3lM/4P+Oy6hu+weJIkAN2tr1Rnzx4OcM5SvRr99jgVhGuY BYhFrpL6EF0jaQvLSTPFixvE4AaVx7jTUwRekt+jMWJxPWEJmaM8IXuRBonfKXxZtvJR66jqmdiNt /Q7ph3D6PRWqk8yEDZURA6nMXmDQkB9mE93PZmQCtCEeQTnawjhQpMDaSggVGBAGCvhrnrKHtVPbC SCLbFT+Xso+D/IomJUPbme9vFKfteLm5FmBE4mMiWwrCv/3YG799TeQi0x+uAUK/LULhtPhNkpIBI 8pdpo2HQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vHLhM-0000000HJ1q-3bg9; Fri, 07 Nov 2025 12:36:12 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vHLhK-0000000HIz6-0aPd for linux-arm-kernel@lists.infradead.org; Fri, 07 Nov 2025 12:36:11 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E47A7153B; Fri, 7 Nov 2025 04:36:01 -0800 (PST) Received: from e134344.cambridge.arm.com (e134344.arm.com [10.1.196.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id DABC93F66E; Fri, 7 Nov 2025 04:36:04 -0800 (PST) From: Ben Horgan To: james.morse@arm.com Cc: amitsinght@marvell.com, baisheng.gao@unisoc.com, baolin.wang@linux.alibaba.com, bobo.shaobowang@huawei.com, carl@os.amperecomputing.com, catalin.marinas@arm.com, dakr@kernel.org, dave.martin@arm.com, david@redhat.com, dfustini@baylibre.com, fenghuay@nvidia.com, gregkh@linuxfoundation.org, gshan@redhat.com, guohanjun@huawei.com, jeremy.linton@arm.com, jonathan.cameron@huawei.com, kobak@nvidia.com, lcherian@marvell.com, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, lpieralisi@kernel.org, peternewman@google.com, quic_jiles@quicinc.com, rafael@kernel.org, robh@kernel.org, rohit.mathew@arm.com, scott@os.amperecomputing.com, sdonthineni@nvidia.com, sudeep.holla@arm.com, tan.shaopeng@fujitsu.com, will@kernel.org, xhao@linux.alibaba.com, Ben Horgan Subject: [PATCH 08/33] ACPI: Define acpi_put_table cleanup handler and acpi_get_table_ret() helper Date: Fri, 7 Nov 2025 12:34:25 +0000 Message-ID: <20251107123450.664001-9-ben.horgan@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251107123450.664001-1-ben.horgan@arm.com> References: <20251107123450.664001-1-ben.horgan@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251107_043610_239953_4236605A X-CRM114-Status: UNSURE ( 8.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Define a cleanup helper for use with __free to release the acpi table when the pointer goes out of scope. Also, introduce the helper acpi_get_table_ret() to simplify a commonly used pattern involving acpi_get_table(). These are first used in a subsequent commit. Signed-off-by: Ben Horgan --- include/linux/acpi.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index a9dbacabdf89..1124b7dc79fd 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -8,6 +8,7 @@ #ifndef _LINUX_ACPI_H #define _LINUX_ACPI_H +#include #include #include /* for struct resource */ #include @@ -221,6 +222,17 @@ void acpi_reserve_initial_tables (void); void acpi_table_init_complete (void); int acpi_table_init (void); +static inline struct acpi_table_header *acpi_get_table_ret(char *signature, u32 instance) +{ + struct acpi_table_header *table; + int status = acpi_get_table(signature, instance, &table); + + if (ACPI_FAILURE(status)) + return ERR_PTR(-ENOENT); + return table; +} +DEFINE_FREE(acpi_put_table, struct acpi_table_header *, if (!IS_ERR_OR_NULL(_T)) acpi_put_table(_T)) + int acpi_table_parse(char *id, acpi_tbl_table_handler handler); int __init_or_acpilib acpi_table_parse_entries(char *id, unsigned long table_size, int entry_id, -- 2.43.0