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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2013-10-26 10:04:09 -0700 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2013-10-30 14:24:51 +0100 |
| commit | d4b1bba76171cb783e32441b28462fe841073ed8 (patch) | |
| tree | 31130bbf6888e1a210c9b7ce28b6cf5fa5177042 | |
| parent | a94c79bdc972f7b3d66756043edbd6d04e8486d6 (diff) | |
| download | linux-stable-d4b1bba76171cb783e32441b28462fe841073ed8.tar.gz linux-stable-d4b1bba76171cb783e32441b28462fe841073ed8.tar.bz2 linux-stable-d4b1bba76171cb783e32441b28462fe841073ed8.zip | |
HID: hid-sensor-hub: fix report size
Most of the hid sensor field size is reported in report_size field
in the report descriptor. For rotation fusion sensor the quaternion
data is 16 byte field, the report size was set to 4 and report
count field is set to 4. So the total size is 16 bytes. But the current
driver has a bug and not taking account for report count field. This
causes user space to see only 4 bytes of data sent via IIO interface.
The number of bytes in a field needs to take account of report_count
field. Need to multiply report_size and report_count to get total
number of bytes.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | drivers/hid/hid-sensor-hub.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c index 10e1581022cf..9e4cdca549c0 100644 --- a/drivers/hid/hid-sensor-hub.c +++ b/drivers/hid/hid-sensor-hub.c @@ -326,7 +326,8 @@ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, field->logical == attr_usage_id) { sensor_hub_fill_attr_info(info, i, report->id, field->unit, field->unit_exponent, - field->report_size); + field->report_size * + field->report_count); ret = 0; } else { for (j = 0; j < field->maxusage; ++j) { @@ -338,7 +339,8 @@ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, i, report->id, field->unit, field->unit_exponent, - field->report_size); + field->report_size * + field->report_count); ret = 0; break; } @@ -425,9 +427,10 @@ static int sensor_hub_raw_event(struct hid_device *hdev, hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", i, report->field[i]->usage->collection_index, report->field[i]->usage->hid, - report->field[i]->report_size/8); - - sz = report->field[i]->report_size/8; + (report->field[i]->report_size * + report->field[i]->report_count)/8); + sz = (report->field[i]->report_size * + report->field[i]->report_count)/8; if (pdata->pending.status && pdata->pending.attr_usage_id == report->field[i]->usage->hid) { hid_dbg(hdev, "data was pending ...\n"); |