diff options
Diffstat (limited to 'drivers/hid/hid-zpff.c')
| -rw-r--r-- | drivers/hid/hid-zpff.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/hid/hid-zpff.c b/drivers/hid/hid-zpff.c index f90959e94028..3abaca045869 100644 --- a/drivers/hid/hid-zpff.c +++ b/drivers/hid/hid-zpff.c @@ -54,11 +54,17 @@ static int zpff_init(struct hid_device *hid) { struct zpff_device *zpff; struct hid_report *report; - struct hid_input *hidinput = list_entry(hid->inputs.next, - struct hid_input, list); - struct input_dev *dev = hidinput->input; + struct hid_input *hidinput; + struct input_dev *dev; int i, error; + if (list_empty(&hid->inputs)) { + hid_err(hid, "no inputs found\n"); + return -ENODEV; + } + hidinput = list_entry(hid->inputs.next, struct hid_input, list); + dev = hidinput->input; + for (i = 0; i < 4; i++) { report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, i, 1); if (!report) |