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Commit 1c832b3e authored by Lan Tianyu's avatar Lan Tianyu Committed by Rafael J. Wysocki
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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: default avatarLompik <lompik@voila.fr>
Tested-by: default avatarValentin Lab <valentin.lab_bugzilla.kernel.org@kalysto.org>
Signed-off-by: default avatarLan Tianyu <tianyu.lan@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 770970f0

drivers/acpi/ec.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -1147,6 +1147,9 @@ static int acpi_ec_add(struct acpi_device *device) 




	ret = ec_install_handlers(ec);

	ret = ec_install_handlers(ec);





	/* Reprobe devices depending on the EC */

	acpi_walk_dep_device_list(ec->handle);



	/* EC is fully operational, allow queries */

	/* EC is fully operational, allow queries */

	clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);

	clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);