[PATCH] Add power management op for RNDIS host
From: Shaoxu Liu <hidden>
Date: 2026-05-27 08:24:25
Also in:
linux-usb, lkml
Subsystem:
networking drivers, the rest, usb networking drivers · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
RNDIS host does not manage the USB power, and it will cause more power consumption even when no data transferring. Adding the power management operator will make the USB enter suspend mode when no data transferring. Signed-off-by: Shaoxu Liu <redacted> --- drivers/net/usb/rndis_host.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 7b3739b29..76eb65fd5 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c@@ -630,6 +630,17 @@ static const struct driver_info zte_rndis_info = { .tx_fixup = rndis_tx_fixup, }; +static const struct driver_info rndis_info_lowpower = { + .description = "RNDIS device", + .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .bind = rndis_bind, + .unbind = rndis_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, + .tx_fixup = rndis_tx_fixup, + .manage_power = usbnet_manage_power, +}; + /*-------------------------------------------------------------------------*/ static const struct usb_device_id products [] = {
@@ -657,6 +668,11 @@ static const struct usb_device_id products [] = { /* 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, +}, { + /* RNDIS for Telit Cinterion low power LTE cat1biz modules LE310X1*/ + USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x7030, + USB_CLASS_WIRELESS_CONTROLLER, 1, 3), + .driver_info = (unsigned long)&rndis_info_lowpower, }, { /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
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2.25.1