diff options
| -rw-r--r-- | drivers/platform/x86/dell/dell-wmi-ddv.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/platform/x86/dell/dell-wmi-ddv.c b/drivers/platform/x86/dell/dell-wmi-ddv.c index 699feae3c435..1a001296e8c6 100644 --- a/drivers/platform/x86/dell/dell-wmi-ddv.c +++ b/drivers/platform/x86/dell/dell-wmi-ddv.c @@ -129,9 +129,9 @@ static int dell_wmi_ddv_query_buffer(struct wmi_device *wdev, enum dell_ddv_meth if (obj->package.elements[1].type != ACPI_TYPE_BUFFER) goto err_free; - if (buffer_size != obj->package.elements[1].buffer.length) { + if (buffer_size > obj->package.elements[1].buffer.length) { dev_warn(&wdev->dev, - FW_WARN "ACPI buffer size (%llu) does not match WMI buffer size (%d)\n", + FW_WARN "WMI buffer size (%llu) exceeds ACPI buffer size (%d)\n", buffer_size, obj->package.elements[1].buffer.length); goto err_free; @@ -271,15 +271,17 @@ static int dell_wmi_ddv_buffer_read(struct seq_file *seq, enum dell_ddv_method m struct device *dev = seq->private; struct dell_wmi_ddv_data *data = dev_get_drvdata(dev); union acpi_object *obj; - union acpi_object buf; + u64 size; + u8 *buf; int ret; ret = dell_wmi_ddv_query_buffer(data->wdev, method, 0, &obj); if (ret < 0) return ret; - buf = obj->package.elements[1]; - ret = seq_write(seq, buf.buffer.pointer, buf.buffer.length); + size = obj->package.elements[0].integer.value; + buf = obj->package.elements[1].buffer.pointer; + ret = seq_write(seq, buf, size); kfree(obj); return ret; |