When the handler installation failed, there was no code to free the allocated EC device. This patch fixes this memory leakage issue. Link: https://bugzilla.kernel.org/show_bug.cgi?id=115021 Reported-and-tested-by: Luya Tshimbalanga <luya@xxxxxxxxxxxxxxxxx> Tested-by: Jonh Henderson <jw.hendy@xxxxxxxxx> Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> Cc: Peter Wu <peter@xxxxxxxxxxxxx> --- drivers/acpi/ec.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 9eab651..50895ff 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1513,14 +1513,18 @@ static int acpi_ec_add(struct acpi_device *device) return -ENOMEM; if (ec_parse_device(device->handle, 0, ec, NULL) != AE_CTRL_TERMINATE) { - acpi_ec_free(ec); - return -EINVAL; + ret = -EINVAL; + goto err_alloc; } /* Find and register all query methods */ acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1, acpi_ec_register_query_methods, NULL, ec, NULL); + ret = acpi_config_boot_ec(ec, false); + if (ret) + goto err_query; + device->driver_data = ec; ret = !!request_region(ec->data_addr, 1, "EC data"); @@ -1528,13 +1532,17 @@ static int acpi_ec_add(struct acpi_device *device) ret = !!request_region(ec->command_addr, 1, "EC cmd"); WARN(!ret, "Could not request EC cmd io port 0x%lx", ec->command_addr); - ret = acpi_config_boot_ec(ec, false); - /* Reprobe devices depending on the EC */ acpi_walk_dep_device_list(ec->handle); /* EC is fully operational, allow queries */ acpi_ec_enable_event(ec); + return 0; + +err_query: + acpi_ec_remove_query_handlers(ec, true, 0); +err_alloc: + acpi_ec_free(ec); return ret; } -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
