From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 21DEF1A680C; Mon, 13 Apr 2026 16:39:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776098388; cv=none; b=DFLFbs89J+1zf5XVgG1TC9yuqH64c3XS250RnGpsbbwEYpBe76v8BVWSlJO5xkM/jYFl/TD3NlNXaYWa+m3S6W8ZZ8BGH4+OoZMs7I9BicDILIt9SvvydimCA9pgYc/r9f5AWHIO+jXzhU/RWJh+olbt9dJfe55JFZHIEVT+OC4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776098388; c=relaxed/simple; bh=2ib9Y+v8AUQkWxsetPn0KRJWhzSIkxc6E8dFFd90ah8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o4RrxJip537yGYVrMPZKQDPRZ154Rjmf+bzaRHL/E2CEnseH9H8pCj1m9uox4CwXKYkP4DE6maZ4k4OkU34DvbcvWDmxVHhV0l0pkmy6IB7m43SIrehtTEjBhAWzt+sLYXLzKtFJ5OdLpkOIeCld5r9RSvC/Hd/St6/xLl10vz4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=oD/VNV0a; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="oD/VNV0a" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB010C2BCAF; Mon, 13 Apr 2026 16:39:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776098388; bh=2ib9Y+v8AUQkWxsetPn0KRJWhzSIkxc6E8dFFd90ah8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oD/VNV0aoWuDdLB8T+BgfqLELC+jIGxw2d3O9NdH+EAksBV2PJdllc8s3Q6BzH0TC KrGm1wzsJjKgqxSzjHzlJzTF4f5qlELbOMbUxXUpLX3i6ADyIpRfQaCvXoHKxTqldK K8sjDPli/mxo/SYo4HPV07ngyT17kg4BWm1aVJ8k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, VitaliiT , "Rafael J. Wysocki" Subject: [PATCH 5.15 504/570] ACPI: EC: Evaluate orphan _REG under EC device Date: Mon, 13 Apr 2026 18:00:35 +0200 Message-ID: <20260413155849.333061481@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155830.386096114@linuxfoundation.org> References: <20260413155830.386096114@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rafael J. Wysocki commit 0e6b6dedf16800df0ff73ffe2bb5066514db29c2 upstream. After starting to install the EC address space handler at the ACPI namespace root, if there is an "orphan" _REG method in the EC device's scope, it will not be evaluated any more. This breaks EC operation regions on some systems, like Asus gu605. To address this, use a wrapper around an existing ACPICA function to look for an "orphan" _REG method in the EC device scope and evaluate it if present. Fixes: 60fa6ae6e6d0 ("ACPI: EC: Install address space handler at the namespace root") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218945 Reported-by: VitaliiT Tested-by: VitaliiT Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/acpica/acevents.h | 4 +++ drivers/acpi/acpica/evregion.c | 6 ---- drivers/acpi/acpica/evxfregn.c | 54 +++++++++++++++++++++++++++++++++++++++++ drivers/acpi/ec.c | 3 ++ include/acpi/acpixf.h | 4 +++ 5 files changed, 66 insertions(+), 5 deletions(-) --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -191,6 +191,10 @@ void acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, acpi_adr_space_type space_id, u32 function); +void +acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *node, + acpi_adr_space_type space_id); + acpi_status acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function); --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -20,10 +20,6 @@ extern u8 acpi_gbl_default_address_space /* Local prototypes */ -static void -acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node, - acpi_adr_space_type space_id); - static acpi_status acpi_ev_reg_run(acpi_handle obj_handle, u32 level, void *context, void **return_value); @@ -799,7 +795,7 @@ acpi_ev_reg_run(acpi_handle obj_handle, * ******************************************************************************/ -static void +void acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node, acpi_adr_space_type space_id) { --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -304,3 +304,57 @@ acpi_execute_reg_methods(acpi_handle dev } ACPI_EXPORT_SYMBOL(acpi_execute_reg_methods) + +/******************************************************************************* + * + * FUNCTION: acpi_execute_orphan_reg_method + * + * PARAMETERS: device - Handle for the device + * space_id - The address space ID + * + * RETURN: Status + * + * DESCRIPTION: Execute an "orphan" _REG method that appears under an ACPI + * device. This is a _REG method that has no corresponding region + * within the device's scope. + * + ******************************************************************************/ +acpi_status +acpi_execute_orphan_reg_method(acpi_handle device, acpi_adr_space_type space_id) +{ + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_execute_orphan_reg_method); + + /* Parameter validation */ + + if (!device) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Convert and validate the device handle */ + + node = acpi_ns_validate_handle(device); + if (node) { + + /* + * If an "orphan" _REG method is present in the device's scope + * for the given address space ID, run it. + */ + + acpi_ev_execute_orphan_reg_method(node, space_id); + } else { + status = AE_BAD_PARAMETER; + } + + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_execute_orphan_reg_method) --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1521,6 +1521,9 @@ static int ec_install_handlers(struct ac if (call_reg && !test_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags)) { acpi_execute_reg_methods(scope_handle, ACPI_ADR_SPACE_EC); + if (scope_handle != ec->handle) + acpi_execute_orphan_reg_method(ec->handle, ACPI_ADR_SPACE_EC); + set_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags); } --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -661,6 +661,10 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status acpi_adr_space_type space_id)) ACPI_EXTERNAL_RETURN_STATUS(acpi_status + acpi_execute_orphan_reg_method(acpi_handle device, + acpi_adr_space_type + space_id)) +ACPI_EXTERNAL_RETURN_STATUS(acpi_status acpi_remove_address_space_handler(acpi_handle device, acpi_adr_space_type