diff options
Diffstat (limited to 'drivers/net/usb/cdc_mbim.c')
| -rw-r--r-- | drivers/net/usb/cdc_mbim.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 42f51c71ec1f..248d2dc765a5 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -374,6 +374,21 @@ static const struct driver_info cdc_mbim_info = { .tx_fixup = cdc_mbim_tx_fixup, }; +/* MBIM and NCM devices should not need a ZLP after NTBs with + * dwNtbOutMaxSize length. This driver_info is for the exceptional + * devices requiring it anyway, allowing them to be supported without + * forcing the performance penalty on all the sane devices. + */ +static const struct driver_info cdc_mbim_info_zlp = { + .description = "CDC MBIM", + .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP, + .bind = cdc_mbim_bind, + .unbind = cdc_mbim_unbind, + .manage_power = cdc_mbim_manage_power, + .rx_fixup = cdc_mbim_rx_fixup, + .tx_fixup = cdc_mbim_tx_fixup, +}; + static const struct usb_device_id mbim_devs[] = { /* This duplicate NCM entry is intentional. MBIM devices can * be disguised as NCM by default, and this is necessary to @@ -385,6 +400,10 @@ static const struct usb_device_id mbim_devs[] = { { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), .driver_info = (unsigned long)&cdc_mbim_info, }, + /* Sierra Wireless MC7710 need ZLPs */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68a2, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), + .driver_info = (unsigned long)&cdc_mbim_info_zlp, + }, { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), .driver_info = (unsigned long)&cdc_mbim_info, }, |