From: Lan Tianyu Date: Wed, 1 Apr 2015 01:47:18 +0000 (+0800) Subject: ACPI / EC: Call acpi_walk_dep_device_list() after installing EC opregion handler X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1c832b3e85b6ac35e5f113fa4204eb725c54794e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Tested-by: Valentin Lab Signed-off-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index a362f20c6c8b..220d6406c9e9 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -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);