Messages in this thread Patch in this message |  | | From | "Rafael J. Wysocki" <> | Subject | [PATCH 2/3] ACPI / hotplug: Do not execute "insert in progress" _OST | Date | Wed, 06 Nov 2013 00:36:22 +0100 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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> ---
Material for stable, in my opinion.
Thanks, Rafael
--- drivers/acpi/scan.c | 2 -- 1 file changed, 2 deletions(-)
Index: linux-pm/drivers/acpi/scan.c =================================================================== --- linux-pm.orig/drivers/acpi/scan.c +++ linux-pm/drivers/acpi/scan.c @@ -344,8 +344,6 @@ static void acpi_scan_bus_device_check(a 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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