From 07ce9fa6ab0e5e4cb5516a1f7c754ab2758fe5cd Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 10 Feb 2023 12:16:31 +0100 Subject: [PATCH] wifi: rtw88: usb: send Zero length packets if necessary Zero length packets are necessary when sending URBs with size multiple of bulkout_size, otherwise the hardware just stalls. Fixes: a82dfd33d1237 ("wifi: rtw88: Add common USB chip support") Signed-off-by: Sascha Hauer Reviewed-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230210111632.1985205-3-s.hauer@pengutronix.de --- drivers/net/wireless/realtek/rtw88/usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/realtek/rtw88/usb.c b/drivers/net/wireless/realtek/rtw88/usb.c index d9e995544e405..1a09c9288198a 100644 --- a/drivers/net/wireless/realtek/rtw88/usb.c +++ b/drivers/net/wireless/realtek/rtw88/usb.c @@ -271,6 +271,7 @@ static int rtw_usb_write_port(struct rtw_dev *rtwdev, u8 qsel, struct sk_buff *s return -ENOMEM; usb_fill_bulk_urb(urb, usbd, pipe, skb->data, skb->len, cb, context); + urb->transfer_flags |= URB_ZERO_PACKET; ret = usb_submit_urb(urb, GFP_ATOMIC); usb_free_urb(urb); -- 2.30.2