HID: logitech-dj: break out testing of validity of dj_device

We can do once the test of the validity of the dj_device, which removes
some duplicated code in various functions.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 9bf8637..71f5692 100644 (file)
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -385,18 +385,6 @@ static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
 
        djdev = djrcv_dev->paired_dj_devices[dj_report->device_index];
 
-       if (!djdev) {
-               dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
-                       " is NULL, index %d\n", dj_report->device_index);
-               kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
-
-               if (schedule_work(&djrcv_dev->work) == 0) {
-                       dbg_hid("%s: did not schedule the work item, was already "
-                       "queued\n", __func__);
-               }
-               return;
-       }
-
        memset(reportbuffer, 0, sizeof(reportbuffer));
 
        for (i = 0; i < NUMBER_OF_HID_REPORTS; i++) {
@@ -421,18 +409,6 @@ static void logi_dj_recv_forward_report(struct dj_receiver_dev *djrcv_dev,
 
        dj_device = djrcv_dev->paired_dj_devices[dj_report->device_index];
 
-       if (dj_device == NULL) {
-               dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
-                       " is NULL, index %d\n", dj_report->device_index);
-               kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
-
-               if (schedule_work(&djrcv_dev->work) == 0) {
-                       dbg_hid("%s: did not schedule the work item, was already "
-                       "queued\n", __func__);
-               }
-               return;
-       }
-
        if ((dj_report->report_type > ARRAY_SIZE(hid_reportid_size_map) - 1) ||
            (hid_reportid_size_map[dj_report->report_type] == 0)) {
                dbg_hid("invalid report type:%x\n", dj_report->report_type);
@@ -701,8 +677,17 @@ static int logi_dj_raw_event(struct hid_device *hdev,
        }
 
        spin_lock_irqsave(&djrcv_dev->lock, flags);
+
+       if (!djrcv_dev->paired_dj_devices[dj_report->device_index]) {
+               /* received an event for an unknown device, bail out */
+               logi_dj_recv_queue_notification(djrcv_dev, dj_report);
+               goto out;
+       }
+
        switch (dj_report->report_type) {
        case REPORT_TYPE_NOTIF_DEVICE_PAIRED:
+               /* pairing notifications are handled above the switch */
+               break;
        case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED:
                logi_dj_recv_queue_notification(djrcv_dev, dj_report);
                break;
@@ -715,6 +700,8 @@ static int logi_dj_raw_event(struct hid_device *hdev,
        default:
                logi_dj_recv_forward_report(djrcv_dev, dj_report);
        }
+
+out:
        spin_unlock_irqrestore(&djrcv_dev->lock, flags);
 
        return true;