linux-kernel - [RFC PATCH v2 02/12] ACPI: Add sys_hotplug.h for system device hotplug framework

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Date:	Thu, 10 Jan 2013 16:40:20 -0700
From:	Toshi Kani <toshi.kani@...com>
To:	rjw@...k.pl, lenb@...nel.org, gregkh@...uxfoundation.org,
	akpm@...ux-foundation.org
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, bhelgaas@...gle.com,
	isimatu.yasuaki@...fujitsu.com, jiang.liu@...wei.com,
	wency@...fujitsu.com, guohanjun@...wei.com, yinghai@...nel.org,
	srivatsa.bhat@...ux.vnet.ibm.com, Toshi Kani <toshi.kani@...com>
Subject: [RFC PATCH v2 02/12] ACPI: Add sys_hotplug.h for system device hotplug framework

Added include/acpi/sys_hotplug.h, which is ACPI-specific system
device hotplug header and defines the order values of ACPI-specific
handlers.

Signed-off-by: Toshi Kani <toshi.kani@...com>
---
 include/acpi/sys_hotplug.h |   48 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 include/acpi/sys_hotplug.h

diff --git a/include/acpi/sys_hotplug.h b/include/acpi/sys_hotplug.h
new file mode 100644
index 0000000..ad80f61
--- /dev/null
+++ b/include/acpi/sys_hotplug.h
@@ -0,0 +1,48 @@
+/*
+ * sys_hotplug.h - ACPI System device hot-plug framework
+ *
+ * Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+ *	Toshi Kani <toshi.kani@...com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _ACPI_SYS_HOTPLUG_H
+#define _ACPI_SYS_HOTPLUG_H
+
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/sys_hotplug.h>
+
+/*
+ * System device hot-plug operation proceeds in the following order.
+ *   Validate phase -> Execute phase -> Commit phase
+ *
+ * The order values below define the calling sequence of ACPI-specific
+ * handlers for each phase in ascending order.  The order value of
+ * platform-neutral handlers are defined in <linux/sys_hotplug.h>.
+ */
+
+/* Add Validate order values */
+#define SHP_ACPI_BUS_ADD_VALIDATE_ORDER		0	/* must be first */
+
+/* Add Execute order values */
+#define SHP_ACPI_BUS_ADD_EXECUTE_ORDER		10
+#define SHP_ACPI_RES_ADD_EXECUTE_ORDER		20
+
+/* Add Commit order values */
+#define SHP_ACPI_BUS_ADD_COMMIT_ORDER		10
+
+/* Delete Validate order values */
+#define SHP_ACPI_BUS_DEL_VALIDATE_ORDER		0	/* must be first */
+#define SHP_ACPI_RES_DEL_VALIDATE_ORDER		10
+
+/* Delete Execute order values */
+#define SHP_ACPI_BUS_DEL_EXECUTE_ORDER		100
+
+/* Delete Commit order values */
+#define SHP_ACPI_BUS_DEL_COMMIT_ORDER		100
+
+#endif	/* _ACPI_SYS_HOTPLUG_H */
--
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