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Date: Thu, 31 May 2018 11:18:29 +0200 From: Daniele Palmas <dnlplm@...il.com> To: Bjørn Mork <bjorn@...k.no>, Oliver Neukum <oliver@...kum.org> Cc: netdev@...r.kernel.org, linux-usb@...r.kernel.org, Daniele Palmas <dnlplm@...il.com> Subject: [PATCH 1/1] net: usb: cdc_mbim: add flag FLAG_SEND_ZLP 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 <dnlplm@...il.com> --- drivers/net/usb/cdc_mbim.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 7220cd6..0362acd 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, -- 2.7.4
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