This is a note to let you know that I've just added the patch titled
rndis_host: support Hytera digital radios
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rndis_host-support-hytera-digital-radios.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 29262e1f773b4b6a43711120be564c57fca07cfb Mon Sep 17 00:00:00 2001
From: Thomas Toye <thomas@xxxxxxx>
Date: Sat, 1 Jan 2022 18:22:07 +0100
Subject: rndis_host: support Hytera digital radios
From: Thomas Toye <thomas@xxxxxxx>
commit 29262e1f773b4b6a43711120be564c57fca07cfb upstream.
Hytera makes a range of digital (DMR) radios. These radios can be
programmed to a allow a computer to control them over Ethernet over USB,
either using NCM or RNDIS.
This commit adds support for RNDIS for Hytera radios. I tested with a
Hytera PD785 and a Hytera MD785G. When these radios are programmed to
set up a Radio to PC Network using RNDIS, an USB interface will be added
with class 2 (Communications), subclass 2 (Abstract Modem Control) and
an interface protocol of 255 ("vendor specific" - lsusb even hints "MSFT
RNDIS?").
This patch is similar to the solution of this StackOverflow user, but
that only works for the Hytera MD785:
https://stackoverflow.com/a/53550858
To use the "Radio to PC Network" functionality of Hytera DMR radios, the
radios need to be programmed correctly in CPS (Hytera's Customer
Programming Software). "Forward to PC" should be checked in "Network"
(under "General Setting" in "Conventional") and the "USB Network
Communication Protocol" should be set to RNDIS.
Signed-off-by: Thomas Toye <thomas@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/rndis_host.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -609,6 +609,11 @@ static const struct usb_device_id produc
USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
.driver_info = (unsigned long) &rndis_poll_status_info,
}, {
+ /* Hytera Communications DMR radios' "Radio to PC Network" */
+ USB_VENDOR_AND_INTERFACE_INFO(0x238b,
+ USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
+ .driver_info = (unsigned long)&rndis_info,
+}, {
/* RNDIS is MSFT's un-official variant of CDC ACM */
USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
.driver_info = (unsigned long) &rndis_info,
Patches currently in stable-queue which might be from thomas@xxxxxxx are
queue-5.15/rndis_host-support-hytera-digital-radios.patch
