diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/surface/surface3-wmi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/platform/surface/surface3-wmi.c b/drivers/platform/surface/surface3-wmi.c index 130b6f52a600..fcd1d4fb94d5 100644 --- a/drivers/platform/surface/surface3-wmi.c +++ b/drivers/platform/surface/surface3-wmi.c @@ -57,12 +57,16 @@ static DEFINE_MUTEX(s3_wmi_lock); static int s3_wmi_query_block(const char *guid, int instance, int *ret) { struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj = NULL; acpi_status status; - union acpi_object *obj; int error = 0; mutex_lock(&s3_wmi_lock); status = wmi_query_block(guid, instance, &output); + if (ACPI_FAILURE(status)) { + error = -EIO; + goto out_free_unlock; + } obj = output.pointer; |