From patchwork Wed Jun 20 11:00:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 10476989 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 40BBA60383 for ; Wed, 20 Jun 2018 11:02:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 316D128AD7 for ; Wed, 20 Jun 2018 11:02:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2610528B99; Wed, 20 Jun 2018 11:02:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 92C2528AD7 for ; Wed, 20 Jun 2018 11:02:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754167AbeFTLBj (ORCPT ); Wed, 20 Jun 2018 07:01:39 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:59918 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754162AbeFTLBh (ORCPT ); Wed, 20 Jun 2018 07:01:37 -0400 Received: from localhost ([127.0.0.1] helo=bazinga.breakpoint.cc) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1fVarl-0003m6-VF; Wed, 20 Jun 2018 13:01:34 +0200 From: Sebastian Andrzej Siewior To: linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab , linux-usb@vger.kernel.org, tglx@linutronix.de, Sebastian Andrzej Siewior , Hans Verkuil Subject: [PATCH 16/27] media: pwc: use usb_fill_int_urb() Date: Wed, 20 Jun 2018 13:00:54 +0200 Message-Id: <20180620110105.19955-17-bigeasy@linutronix.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180620110105.19955-1-bigeasy@linutronix.de> References: <20180620110105.19955-1-bigeasy@linutronix.de> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Using usb_fill_int_urb() helps to find code which initializes an URB. A grep for members of the struct (like ->complete) reveal lots of other things, too. Cc: Hans Verkuil Cc: Mauro Carvalho Chehab Signed-off-by: Sebastian Andrzej Siewior --- drivers/media/usb/pwc/pwc-if.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c index 54b036d39c5b..8af72b0a607e 100644 --- a/drivers/media/usb/pwc/pwc-if.c +++ b/drivers/media/usb/pwc/pwc-if.c @@ -409,6 +409,8 @@ static int pwc_isoc_init(struct pwc_device *pdev) /* Allocate and init Isochronuous urbs */ for (i = 0; i < MAX_ISO_BUFS; i++) { + void *buf; + urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); if (urb == NULL) { pwc_isoc_cleanup(pdev); @@ -416,23 +418,18 @@ static int pwc_isoc_init(struct pwc_device *pdev) } pdev->urbs[i] = urb; PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb); - - urb->interval = 1; // devik - urb->dev = udev; - urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint); urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; - urb->transfer_buffer = usb_alloc_coherent(udev, - ISO_BUFFER_SIZE, - GFP_KERNEL, - &urb->transfer_dma); - if (urb->transfer_buffer == NULL) { + buf = usb_alloc_coherent(udev, ISO_BUFFER_SIZE, GFP_KERNEL, + &urb->transfer_dma); + if (buf == NULL) { PWC_ERROR("Failed to allocate urb buffer %d\n", i); pwc_isoc_cleanup(pdev); return -ENOMEM; } - urb->transfer_buffer_length = ISO_BUFFER_SIZE; - urb->complete = pwc_isoc_handler; - urb->context = pdev; + usb_fill_int_urb(urb, udev, + usb_rcvisocpipe(udev, pdev->vendpoint), + buf, ISO_BUFFER_SIZE, pwc_isoc_handler, pdev, 1); + urb->start_frame = 0; urb->number_of_packets = ISO_FRAMES_PER_DESC; for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {