Initialize user buffer with 0s. This will avoid random data in the buffer,
when the user buffer size is bigger than the actual report size.
Signed-off-by: Song Hongyan <hongyan.song@xxxxxxxxx>
---
Changes in v2:
-clear memory in get_feature() instead of set_feature()
drivers/hid/hid-sensor-hub.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index 658a607..b74d954 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -252,6 +252,7 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
int report_size;
int ret = 0;
+ memset(buffer, 0, buffer_size);
mutex_lock(&data->mutex);
report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
if (!report || (field_index >= report->maxfield) ||
--
1.9.1
--
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