4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
commit 143fca77cce906d35f7a60ccef648e888df589f2 upstream.
While applying patch d443a0aa3a29: "HID: hid-sensor-hub: clear memory to
avoid random data", there was some issues in applying correct version of
the patch. This resulted in the breakage of sensor functions as all
request like power-up will be reset by the memset() in the function
sensor_hub_set_feature().
The reset of caller buffer should be in the function
sensor_hub_get_feature(), not in the sensor_hub_set_feature().
Fixes: d443a0aa3a29 ("HID: hid-sensor-hub: clear memory to avoid random data")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-sensor-hub.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -212,7 +212,6 @@ int sensor_hub_set_feature(struct hid_se
__s32 value;
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)) {
@@ -256,6 +255,8 @@ int sensor_hub_get_feature(struct hid_se
int buffer_index = 0;
int i;
+ 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) ||
--
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