On Mon, 2020-02-10 at 13:21 +0500, Mikhail Gavrilov wrote:
> Kernel log flooded by message
> logitech-djreceiver 0003:046D:C53A.000C: logi_dj_hidpp_event: invalid
> device index:7
> This happens when the mouse is idle.
> And it started since I begin using the mouse pad with Power Play
> technology.
>
>
> Kernel ver: 5.6 pre RC
> --
> Best Regards,
> Mike Gavrilov.
Hello Mike,
Yes, the Powerplay mat exports a static HID++ 2.0 device with index 7
to configure the led on the mat. The current code expects devices to
have a maximum index of 6, which is the maximum index of pairable
devices.
I already submitted a patch adding support for the Logitech G Powerplay
mat but it wasn't been upstreamed it. I will attach it in case you want
to try it.
Cheers,
Filipe Laíns
---
Author: Filipe Laíns <lains@xxxxxxxxxxxxx>
Date: Sun Jan 12 20:15:41 2020 +0000
HID: logitech-dj: add support for the static device in the Powerplay mat/receiver
The Logitech G Powerplay has a lightspeed receiver with a static HID++
device with ID 7 attached to it to. It is used to configure the led on
the mat. For this reason I increased the max number of devices.
Signed-off-by: Filipe Laíns <lains@xxxxxxxxxxxxx>
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index bb50d6e7745b..79294b873057 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -16,11 +16,11 @@
#include <asm/unaligned.h>
#include "hid-ids.h"
-#define DJ_MAX_PAIRED_DEVICES 6
+#define DJ_MAX_PAIRED_DEVICES 7
#define DJ_MAX_NUMBER_NOTIFS 8
#define DJ_RECEIVER_INDEX 0
#define DJ_DEVICE_INDEX_MIN 1
-#define DJ_DEVICE_INDEX_MAX 6
+#define DJ_DEVICE_INDEX_MAX 7
#define DJREPORT_SHORT_LENGTH 15
#define DJREPORT_LONG_LENGTH 32
@@ -980,6 +980,11 @@ static void logi_hidpp_recv_queue_notif(struct hid_device *hdev,
break;
}
+ /* custom receiver device (eg. powerplay) */
+ if (hidpp_report->device_index == 7) {
+ workitem.reports_supported |= HIDPP;
+ }
+
if (workitem.type == WORKITEM_TYPE_EMPTY) {
hid_warn(hdev,
"unusable device of type %s (0x%02x) connected on slot %d",
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