diff options
Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r-- | drivers/acpi/ec.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 02255795b800..e7793ee9e649 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1482,13 +1482,14 @@ static bool install_gpio_irq_event_handler(struct acpi_ec *ec) static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device, bool call_reg) { + acpi_handle scope_handle = ec == first_ec ? ACPI_ROOT_OBJECT : ec->handle; acpi_status status; acpi_ec_start(ec, false); if (!test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { acpi_ec_enter_noirq(ec); - status = acpi_install_address_space_handler_no_reg(ec->handle, + status = acpi_install_address_space_handler_no_reg(scope_handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler, NULL, ec); @@ -1497,11 +1498,10 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device, return -ENODEV; } set_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); - ec->address_space_handler_holder = ec->handle; } if (call_reg && !test_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags)) { - acpi_execute_reg_methods(ec->handle, ACPI_ADR_SPACE_EC); + acpi_execute_reg_methods(scope_handle, ACPI_ADR_SPACE_EC); set_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags); } @@ -1553,10 +1553,13 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device, static void ec_remove_handlers(struct acpi_ec *ec) { + acpi_handle scope_handle = ec == first_ec ? ACPI_ROOT_OBJECT : ec->handle; + if (test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { if (ACPI_FAILURE(acpi_remove_address_space_handler( - ec->address_space_handler_holder, - ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) + scope_handle, + ACPI_ADR_SPACE_EC, + &acpi_ec_space_handler))) pr_err("failed to remove space handler\n"); clear_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); } @@ -1595,14 +1598,18 @@ static int acpi_ec_setup(struct acpi_ec *ec, struct acpi_device *device, bool ca { int ret; - ret = ec_install_handlers(ec, device, call_reg); - if (ret) - return ret; - /* First EC capable of handling transactions */ if (!first_ec) first_ec = ec; + ret = ec_install_handlers(ec, device, call_reg); + if (ret) { + if (ec == first_ec) + first_ec = NULL; + + return ret; + } + pr_info("EC_CMD/EC_SC=0x%lx, EC_DATA=0x%lx\n", ec->command_addr, ec->data_addr); |