Commit 176a88d7 authored Nov 07, 2013 by Rafael J. Wysocki

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>

parent 43d38883

drivers/acpi/scan.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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");

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