From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C344C847A for ; Wed, 1 Mar 2023 18:09:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FDF1C433EF; Wed, 1 Mar 2023 18:09:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1677694167; bh=lHniOpzs4HdqPnBXOB8sQQfe0Waf7GG9+upik+/4H7M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KWY16IOpXBfTvvGcC5VENN9tqtbs9zdq8G5eeQbrxxsdrjR2EC5gDiILfRSYW5/ZJ ewp4nXtZzFrFU9qie3qCGaehCm7iZYJUPmbgIm6g/93/3U6GhYH0HjWlrzP3LvFUKY +fVpgrO0VoP5YSq8VPfFCBRjJNUyb2bneW/iygzs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sascha Hauer , Ping-Ke Shih , Kalle Valo Subject: [PATCH 6.2 09/16] wifi: rtw88: usb: send Zero length packets if necessary Date: Wed, 1 Mar 2023 19:07:45 +0100 Message-Id: <20230301180653.639532304@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230301180653.263532453@linuxfoundation.org> References: <20230301180653.263532453@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Sascha Hauer commit 07ce9fa6ab0e5e4cb5516a1f7c754ab2758fe5cd upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/realtek/rtw88/usb.c | 1 + 1 file changed, 1 insertion(+) --- 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 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);