AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

ACPI / scan: Always call acpi_bus_scan() for bus check notifications

Browse Source 
An ACPI_NOTIFY_BUS_CHECK notification means that we should scan the
entire namespace starting from the given handle even if the device
represented by that handle is present (other devices below it may
just have appeared).

For this reason, modify acpi_scan_bus_device_check() to always run
acpi_bus_scan() if the notification being handled is of type
ACPI_NOTIFY_BUS_CHECK.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Cc: 3.10+ <stable@vger.kernel.org>
This commit is contained in:
Rafael J. Wysocki 2013-07-08 02:01:53 +02:00
parent 3a391a3959
commit 8832f7e43f
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/acpi/scan.c
View File

@ -352,10 +352,12 @@ static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
mutex_lock(&acpi_scan_lock);
lock_device_hotplug();
acpi_bus_get_device(handle, &device);
if (device) {
dev_warn(&device->dev, "Attempt to re-insert\n");
goto out;
if (ost_source != ACPI_NOTIFY_BUS_CHECK) {
acpi_bus_get_device(handle, &device);
if (device) {
dev_warn(&device->dev, "Attempt to re-insert\n");
goto out;
}
}
acpi_evaluate_hotplug_ost(handle, ost_source,
ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);