From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753035AbaETM7q (ORCPT ); Tue, 20 May 2014 08:59:46 -0400 Received: from mga03.intel.com ([143.182.124.21]:64141 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750808AbaETM7n (ORCPT ); Tue, 20 May 2014 08:59:43 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,874,1392192000"; d="scan'208";a="434483879" From: Lan Tianyu To: wsa@the-dreams.de, rjw@rjwysocki.net, mika.westerberg@linux.intel.com, awilliam@redhat.com, lenb@kernel.org Cc: Lan Tianyu , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Subject: [Patch V3 2/5] ACPI: Add acpi_bus_attach_private_data() to facilitate to attach data to ACPI handle Date: Tue, 20 May 2014 20:59:21 +0800 Message-Id: <1400590764-11108-3-git-send-email-tianyu.lan@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1400590764-11108-1-git-send-email-tianyu.lan@intel.com> References: <1400590764-11108-1-git-send-email-tianyu.lan@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is already acpi_bus_get_private_data() to get ACPI handle data which is associated with acpi_bus_private_data_handler(). This patch is to add acpi_bus_attach_private_data() to make a pair and facilitate to attach and get data to/from ACPI handle. Reviewed-by: Mika Westerberg Signed-off-by: Lan Tianyu --- drivers/acpi/bus.c | 28 ++++++++++++++++++++++++---- include/acpi/acpi_bus.h | 2 ++ 2 files changed, 26 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index cf925c4..8445d57 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -132,6 +132,21 @@ void acpi_bus_private_data_handler(acpi_handle handle, } EXPORT_SYMBOL(acpi_bus_private_data_handler); +int acpi_bus_attach_private_data(acpi_handle handle, void *data) +{ + acpi_status status; + + status = acpi_attach_data(handle, + acpi_bus_private_data_handler, data); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(handle, "Error attaching device data\n"); + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL_GPL(acpi_bus_attach_private_data); + int acpi_bus_get_private_data(acpi_handle handle, void **data) { acpi_status status; @@ -140,15 +155,20 @@ int acpi_bus_get_private_data(acpi_handle handle, void **data) return -EINVAL; status = acpi_get_data(handle, acpi_bus_private_data_handler, data); - if (ACPI_FAILURE(status) || !*data) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", - handle)); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(handle, "No context for object\n"); return -ENODEV; } return 0; } -EXPORT_SYMBOL(acpi_bus_get_private_data); +EXPORT_SYMBOL_GPL(acpi_bus_get_private_data); + +void acpi_bus_detach_private_data(acpi_handle handle) +{ + acpi_detach_data(handle, acpi_bus_private_data_handler); +} +EXPORT_SYMBOL_GPL(acpi_bus_detach_private_data); void acpi_bus_no_hotplug(acpi_handle handle) { diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 84a2e29..d2006ca 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -406,6 +406,8 @@ extern struct kobject *acpi_kobj; extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); void acpi_bus_private_data_handler(acpi_handle, void *); int acpi_bus_get_private_data(acpi_handle, void **); +int acpi_bus_attach_private_data(acpi_handle, void *); +void acpi_bus_detach_private_data(acpi_handle); void acpi_bus_no_hotplug(acpi_handle handle); extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); extern int register_acpi_notifier(struct notifier_block *); -- 1.8.3.1