From: Daniele Palmas Date: Thu, 31 May 2018 09:18:29 +0000 (+0200) Subject: net: usb: cdc_mbim: add flag FLAG_SEND_ZLP X-Git-Tag: v4.16.15~25 X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1486dbbd2072fe719657bcc00c7745baf1152d65;p=linux net: usb: cdc_mbim: add flag FLAG_SEND_ZLP [ Upstream commit 9f7c728332e8966084242fcd951aa46583bc308c ] Testing Telit LM940 with ICMP packets > 14552 bytes revealed that the modem needs FLAG_SEND_ZLP to properly work, otherwise the cdc mbim data interface won't be anymore responsive. Signed-off-by: Daniele Palmas Acked-by: Bjørn Mork Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 7220cd620717..0362acd5cdca 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -609,7 +609,7 @@ static const struct driver_info cdc_mbim_info_ndp_to_end = { */ static const struct driver_info cdc_mbim_info_avoid_altsetting_toggle = { .description = "CDC MBIM", - .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN, + .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,