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ACPI / hotplug: Do not execute "insert in progress" _OST 

According to the ACPI spec (5.0, Section 6.3.5), the "Device
insertion in progress (pending)" (0x80) _OST status code is
reserved for the "Insertion Processing" (0x200) source event
which is "a result of an OSPM action".  Specifically, it is not
a notification, so that status code should not be used during
notification processing, which unfortunately is done by
acpi_scan_bus_device_check().

For this reason, drop the ACPI_OST_SC_INSERT_IN_PROGRESS _OST
status evaluation from there (it was a mistake to put it in there
in the first place).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
This commit is contained in:
Rafael J. Wysocki 2013-11-07 01:42:17 +01:00
parent 43d388832b
commit 176a88d79d
1 changed files with 0 additions and 2 deletions
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2
drivers/acpi/scan.c
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@ -343,8 +343,6 @@ static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
goto out;
}
}
acpi_evaluate_hotplug_ost(handle, ost_source,
ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);
error = acpi_bus_scan(handle);
if (error) {
acpi_handle_warn(handle, "Namespace scan failure\n");