| From | Ben Hutchings <> | Date | Sat, 27 Apr 2019 16:13:09 +0100 | Subject | [PATCH 3.16 010/202] usb: cdc-acm: send ZLP for Telit 3G Intel based modems |
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3.16.66-rc1 review patch. If anyone has any objections, please let me know.
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From: Daniele Palmas <dnlplm@gmail.com>
commit 34aabf918717dd14e05051896aaecd3b16b53d95 upstream.
Telit 3G Intel based modems require zero packet to be sent if out data size is equal to the endpoint max packet size.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/usb/class/cdc-acm.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1903,6 +1903,13 @@ static const struct usb_device_id acm_id .driver_info = IGNORE_DEVICE, }, + { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */ + .driver_info = SEND_ZERO_PACKET, + }, + { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */ + .driver_info = SEND_ZERO_PACKET, + }, + /* control interfaces without any protocol set */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_PROTO_NONE) },
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