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| author | Daniele Palmas <dnlplm@gmail.com> | 2018-12-28 16:15:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-26 09:44:23 +0100 |
| commit | 93e95567e91824e4ab44bd8259426289c0b249ab (patch) | |
| tree | 713f8bc50740649a401620858a4be193eb80a92e | |
| parent | ac72ab69de6686c9a4d65f0e44f13cdfb6255086 (diff) | |
| download | linux-stable-93e95567e91824e4ab44bd8259426289c0b249ab.tar.gz linux-stable-93e95567e91824e4ab44bd8259426289c0b249ab.tar.bz2 linux-stable-93e95567e91824e4ab44bd8259426289c0b249ab.zip | |
usb: cdc-acm: send ZLP for Telit 3G Intel based modems
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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index dc8de68c391e..853879a76dde 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1904,6 +1904,13 @@ static const struct usb_device_id acm_ids[] = { .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) }, |