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From: Zhang Rui <rui.zhang@intel.com>
To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: bhelgaas@google.com, matthew.garrett@nebula.com,
	rafael.j.wysocki@intel.com, dmitry.torokhov@gmail.com,
	mika.westerberg@linux.intel.com, Zhang Rui <rui.zhang@intel.com>
Subject: [PATCH V7 11/11] ACPI: introduce acpi platform exclude id list
Date: Fri, 23 May 2014 02:02:33 +0800	[thread overview]
Message-ID: <1400781753-2682-12-git-send-email-rui.zhang@intel.com> (raw)
In-Reply-To: <1400781753-2682-1-git-send-email-rui.zhang@intel.com>

For ACPI PIC (PNP0000), Timer (PNP0100) and DMA controller (PNP0200)
device objects, although they have _HID control method, but they
should not be enumerated to platform bus, because there will never be
any platform drivers for them.

Thus an exclude id list is introduced in this patch to prevent
those platform device nodes from being created.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/acpi/acpi_platform.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 33376a9..db89480 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -22,6 +22,18 @@
 
 ACPI_MODULE_NAME("platform");
 
+static const struct acpi_device_id excluded_id_list[] = {
+	{"PNP0000", 0},	/* PIC */
+	{"PNP0100", 0},	/* Timer */
+	{"PNP0200", 0}, /* AT DMA Controller */
+	{"", 0},
+};
+
+static bool is_exclusive_device(struct acpi_device *dev)
+{
+	return !acpi_match_device_ids(dev, excluded_id_list);
+}
+
 /**
  * acpi_create_platform_device - Create platform device for ACPI device node
  * @adev: ACPI device node to create a platform device for.
@@ -48,6 +60,9 @@ int acpi_create_platform_device(struct acpi_device *adev,
 	if (adev->physical_node_count)
 		return 0;
 
+	if (is_exclusive_device(adev))
+		return 0;
+
 	INIT_LIST_HEAD(&resource_list);
 	count = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
 	if (count < 0) {
-- 
1.8.3.2


  parent reply	other threads:[~2014-05-22 18:03 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-22 18:02 [PATCH V7 00/11] ACPI: ACPI enumeration rework Zhang Rui
2014-05-22 18:02 ` [PATCH V7 01/11] ACPI: introduce .match() callback for ACPI scan handler Zhang Rui
2014-05-22 18:02 ` [PATCH V7 02/11] PNPACPI: use whilte list for pnpacpi device enumeration Zhang Rui
2014-05-22 18:14   ` Bjorn Helgaas
2014-05-23  0:00     ` Zhang Rui
2014-05-22 18:02 ` [PATCH V7 03/11] ACPI: remove ids that does not comply with the ACPI PNP id rule Zhang Rui
2014-05-22 18:02 ` [PATCH V7 04/11] ACPI: remove unsupported serial PNP ids from acpi pnp scan handler id lsit Zhang Rui
2014-05-22 18:02 ` [PATCH V7 05/11] ACPI: allow scan handlers without .attach() callback Zhang Rui
2014-05-22 18:02 ` [PATCH V7 06/11] ACPI: always register container scan handler even if CONFIG_ACPI_CONTAINER is cleared Zhang Rui
2014-05-22 18:02 ` [PATCH V7 07/11] ACPI: always register memory hotplug scan handler even if CONFIG_ACPI_HOTPLUG_MEMORY " Zhang Rui
2014-05-22 18:02 ` [PATCH V7 08/11] ACPI: always register memory hotplug scan handler even if CONFIG_X86_INTEL_LPSS " Zhang Rui
2014-05-26 10:56   ` Mika Westerberg
2014-05-26 11:53     ` Rafael J. Wysocki
2014-05-26 11:52       ` Mika Westerberg
2014-05-26 12:40         ` Rafael J. Wysocki
2014-05-26 12:58           ` Mika Westerberg
2014-05-22 18:02 ` [PATCH V7 09/11] ACPI: introduce platform_id flag Zhang Rui
2014-05-22 18:02 ` [PATCH V7 10/11] ACPI: use platform bus as the default bus for _HID enumeration Zhang Rui
2014-05-26 10:21   ` Mika Westerberg
2014-05-28  7:16     ` Zhang Rui
2014-05-22 18:02 ` Zhang Rui [this message]
2014-05-30  2:20 ` [PATCH 0/10] ACPI enumeration rework (was: Re: [PATCH V7 00/11] ACPI: ACPI enumeration rework) Rafael J. Wysocki
2014-05-30  2:21   ` [PATCH 1/10] ACPI / scan: .match() callback for ACPI scan handlers Rafael J. Wysocki
2014-05-30  2:23   ` [PATCH 2/10] ACPI / PNP: use device ID list for PNPACPI device enumeration Rafael J. Wysocki
2014-05-30  2:24   ` [PATCH 3/10] ACPI / scan: drop IDs that do not comply with the ACPI PNP ID rule Rafael J. Wysocki
2014-05-30  2:25   ` [PATCH 4/10] ACPI / scan: drop unsupported serial IDs from PNP ACPI scan handler ID list Rafael J. Wysocki
2014-05-30  2:26   ` [PATCH 5/10] ACPI / scan: introduce platform_id device PNP type flag Rafael J. Wysocki
2014-05-30  2:27   ` [PATCH 6/10] ACPI / scan: Change the meaning of missing .attach() in scan handlers Rafael J. Wysocki
2014-05-30  2:28   ` [PATCH 7/10] ACPI / scan: always register container scan handler Rafael J. Wysocki
2014-05-30  2:29   ` [PATCH 8/10] ACPI / scan: always register memory hotplug " Rafael J. Wysocki
2014-05-30  2:30   ` [PATCH 9/10] ACPI / scan: always register ACPI LPSS " Rafael J. Wysocki
2014-05-30 12:34     ` [Update][PATCH " Rafael J. Wysocki
2014-05-30  2:30   ` [PATCH 10/10] ACPI / scan: use platform bus type by default for _HID enumeration Rafael J. Wysocki
2014-05-30 12:35     ` [Update][PATCH " Rafael J. Wysocki
2014-05-31  5:56       ` Zhang Rui
2014-05-31  6:29         ` Zhang Rui
2014-05-30  8:33   ` [PATCH 0/10] ACPI enumeration rework (was: Re: [PATCH V7 00/11] ACPI: ACPI enumeration rework) Mika Westerberg
2014-05-30 12:17     ` Rafael J. Wysocki
2014-05-31 14:46   ` Zhang Rui
2014-05-31 22:29     ` Rafael J. Wysocki

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