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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-05-03 00:26:16 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-05-12 14:14:24 +0200
commit683058e315f00a216fd6c79df4f63bc9945ca434 (patch)
treee4b143220938ebb24a7bf72f286f275090b2afef /include/acpi
parent0902a9044fa5b7a0456ea4daacec2c2b3189ba8c (diff)
downloadlinux-next-683058e315f00a216fd6c79df4f63bc9945ca434.tar.gz
ACPI / hotplug: Use device offline/online for graceful hot-removal
Modify the generic ACPI hotplug code to be able to check if devices scheduled for hot-removal may be gracefully removed from the system using the device offline/online mechanism introduced previously. Namely, make acpi_scan_hot_remove() handling device hot-removal call device_offline() for all physical companions of the ACPI device nodes involved in the operation and check the results. If any of the device_offline() calls fails, the function will not progress to the removal phase (which cannot be aborted), unless its (new) force argument is set (in case of a failing offline it will put the devices offlined by it back online). In support of 'forced' device hot-removal, add a new sysfs attribute 'force_remove' that will reside under /sys/firmware/acpi/hotplug/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 98db31d9f9b4..4d5d3e7ba33d 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -286,6 +286,7 @@ struct acpi_device_physical_node {
u8 node_id;
struct list_head node;
struct device *dev;
+ bool put_online:1;
};
/* set maximum of physical nodes to 32 for expansibility */