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ACPI / EC: Call acpi_walk_dep_device_list() after installing EC opregion handler 

On some machines(E,G Mircosoft surface 3), ACPI battery depends on
the EC operation region and it has _DEP method which contains EC.
Current code doesn't support such devices whose dep_unmet will be
not be decreased after EC opregion handler being installed. This
blocks battery device to be attached with its driver. This patch
is to fix the issue.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=90161
Reported-and-tested-by: Lompik <lompik@voila.fr>
Tested-by: Valentin Lab <valentin.lab_bugzilla.kernel.org@kalysto.org>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Lan Tianyu 2015-04-01 09:47:18 +08:00 committed by Rafael J. Wysocki
parent 770970f0b4
commit 1c832b3e85
1 changed files with 3 additions and 0 deletions
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3
drivers/acpi/ec.c
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@ -1147,6 +1147,9 @@ static int acpi_ec_add(struct acpi_device *device)
ret = ec_install_handlers(ec);
/* Reprobe devices depending on the EC */
acpi_walk_dep_device_list(ec->handle);
/* EC is fully operational, allow queries */
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);