lkml.org 
[lkml]   [2023]   [Feb]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v2 2/3] wifi: rtw88: usb: send Zero length packets if necessary
Date


> -----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

\
 
 \ /
  Last update: 2023-03-27 00:19    [W:0.090 / U:0.508 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site