| Message ID | 20230210111632.1985205-3-s.hauer@pengutronix.de |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: rtw88: USB fixes | expand |
> -----Original Message----- > From: Sascha Hauer <s.hauer@pengutronix.de> > Sent: Friday, February 10, 2023 7:17 PM > To: linux-wireless@vger.kernel.org > Cc: Neo Jou <neojou@gmail.com>; Hans Ulli Kroll <linux@ulli-kroll.de>; Ping-Ke Shih <pkshih@realtek.com>; > Yan-Hsuan Chuang <tony0620emma@gmail.com>; Kalle Valo <kvalo@kernel.org>; netdev@vger.kernel.org; > linux-kernel@vger.kernel.org; Martin Blumenstingl <martin.blumenstingl@googlemail.com>; > kernel@pengutronix.de; Alexander Hochbaum <alex@appudo.com>; Da Xue <da@libre.computer>; Bernie Huang > <phhuang@realtek.com>; Andreas Henriksson <andreas@fatal.se>; Viktor Petrenko <g0000ga@gmail.com>; Sascha > Hauer <s.hauer@pengutronix.de> > Subject: [PATCH v2 2/3] 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 <s.hauer@pengutronix.de> Reviewed-by: Ping-Ke Shih <pkshih@realtek.com> > --- > 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
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);
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 <s.hauer@pengutronix.de> --- drivers/net/wireless/realtek/rtw88/usb.c | 1 + 1 file changed, 1 insertion(+)