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 3C2A38487 for ; Thu, 27 Oct 2022 17:01:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B73C2C433C1; Thu, 27 Oct 2022 17:01:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666890104; bh=QAc7h+YKUtD1LN/63AHfgxO6AmP6rhRryHH76UHn17c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qr8nxpxuf/JQiOExcmFlJqIn1f1qES8iOUF1CvziLdow/fa9Xc7hB3gAzTGyR0zBv jjkFqTfmagULlpMz55NJb6o9CQUikVAFd8etwldkrYBLOEnK+QlphA/HON+tgE88KY n48kHEXix10CHbSA+bgyTd3BEcjAToUaIwNrq3uc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Grzeschik , Dan Vacura Subject: [PATCH 5.15 04/79] usb: gadget: uvc: use on returned header len in video_encode_isoc_sg Date: Thu, 27 Oct 2022 18:55:02 +0200 Message-Id: <20221027165055.066967081@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221027165054.917467648@linuxfoundation.org> References: <20221027165054.917467648@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: Michael Grzeschik commit f262ce66d40cc6858d1fcb11e7b7f960448a4f38 upstream. The function uvc_video_encode_header function returns the number of bytes used for the header. We change the video_encode_isoc_sg function to use the returned header_len rather than UVCG_REQUEST_HEADER_LEN and make the encode function more flexible. Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20211022093223.26493-1-m.grzeschik@pengutronix.de Cc: Dan Vacura Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/uvc_video.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -104,22 +104,22 @@ uvc_video_encode_isoc_sg(struct usb_requ unsigned int len = video->req_size; unsigned int sg_left, part = 0; unsigned int i; - int ret; + int header_len; sg = ureq->sgt.sgl; sg_init_table(sg, ureq->sgt.nents); /* Init the header. */ - ret = uvc_video_encode_header(video, buf, ureq->header, + header_len = uvc_video_encode_header(video, buf, ureq->header, video->req_size); - sg_set_buf(sg, ureq->header, UVCG_REQUEST_HEADER_LEN); - len -= ret; + sg_set_buf(sg, ureq->header, header_len); + len -= header_len; if (pending <= len) len = pending; req->length = (len == pending) ? - len + UVCG_REQUEST_HEADER_LEN : video->req_size; + len + header_len : video->req_size; /* Init the pending sgs with payload */ sg = sg_next(sg); @@ -148,7 +148,7 @@ uvc_video_encode_isoc_sg(struct usb_requ req->num_sgs = i + 1; req->length -= len; - video->queue.buf_used += req->length - UVCG_REQUEST_HEADER_LEN; + video->queue.buf_used += req->length - header_len; if (buf->bytesused == video->queue.buf_used || !buf->sg) { video->queue.buf_used = 0;