From patchwork Tue Jan 11 06:55:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 531317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0799AC433F5 for ; Tue, 11 Jan 2022 06:56:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348349AbiAKG4M (ORCPT ); Tue, 11 Jan 2022 01:56:12 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:45392 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348348AbiAKG4K (ORCPT ); Tue, 11 Jan 2022 01:56:10 -0500 Received: from localhost.localdomain (unknown [IPv6:2a00:c281:14a3:8100:8072:ec19:b639:c4ab]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: dafna) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id CF2B61F4409B; Tue, 11 Jan 2022 06:56:06 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1641884167; bh=8oowA17GymZEoHGk/YGso5OcG6BlTUZOleF572Qbu7U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LcIXyR8wpZofzlhrVgLTteyz2kpa57Xw9nqqCgJYzSGshx4es0y8hE+/vk/tMgQM8 eipVAxJ/kGyj2JkiA1YLLLf4Q1+O0XCRLs60ClQwP01p04gdLK7uDBmQGyyjkVyWPK s7DzdYRoZ+2rWIHrnWrDkYgKTtx6D+DX41QvEjP5bX91YLq4s12bs4VWmYRL9PbSPM 3TlNq/K4QuQb/qVE6c5mIT/6qpy2o8oUu0se6A2CO8ZZ6iIK2fqRC4ssA4QrU9yu7j zvje52rtRzaoK7xRqo3kT0mu53aCElMCNgS/5wubu1K0Qqdk5Uyok921UjtPqU1gPa ZSbqWG6+vpQ3Q== From: Dafna Hirschfeld To: ezequiel@vanguardiasur.com.ar Cc: linux-media@vger.kernel.org, laurent.pinchart@ideasonboard.com, hverkuil@xs4all.nl, ribalda@chromium.org, tfiga@chromium.org, senozhatsky@google.com, hch@lst.de, Dafna Hirschfeld , kernel@collabora.com Subject: [PATCH 2/3] media: stk1160: move transfer_buffer and urb to same struct 'stk1160_urb' Date: Tue, 11 Jan 2022 08:55:04 +0200 Message-Id: <20220111065505.6323-3-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220111065505.6323-1-dafna.hirschfeld@collabora.com> References: <20220111065505.6323-1-dafna.hirschfeld@collabora.com> Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Instead of having two separated arrays, one for the urbs and one for their buffers, have one array of a struct containing both. In addition, the array is just 16 pointers, no need to dynamically allocate it. Signed-off-by: Dafna Hirschfeld --- drivers/media/usb/stk1160/stk1160-v4l.c | 2 +- drivers/media/usb/stk1160/stk1160-video.c | 50 ++++++++--------------- drivers/media/usb/stk1160/stk1160.h | 11 ++--- 3 files changed, 23 insertions(+), 40 deletions(-) diff --git a/drivers/media/usb/stk1160/stk1160-v4l.c b/drivers/media/usb/stk1160/stk1160-v4l.c index 6a4eb616d516..a06030451db4 100644 --- a/drivers/media/usb/stk1160/stk1160-v4l.c +++ b/drivers/media/usb/stk1160/stk1160-v4l.c @@ -232,7 +232,7 @@ static int stk1160_start_streaming(struct stk1160 *dev) /* submit urbs and enables IRQ */ for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { - rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_KERNEL); + rc = usb_submit_urb(dev->isoc_ctl.stk1160_urb[i].urb, GFP_KERNEL); if (rc) { stk1160_err("cannot submit urb[%d] (%d)\n", i, rc); goto out_uninit; diff --git a/drivers/media/usb/stk1160/stk1160-video.c b/drivers/media/usb/stk1160/stk1160-video.c index 91bd6adccdd1..4194d31b53bb 100644 --- a/drivers/media/usb/stk1160/stk1160-video.c +++ b/drivers/media/usb/stk1160/stk1160-video.c @@ -347,7 +347,7 @@ void stk1160_cancel_isoc(struct stk1160 *dev) * We don't care for NULL pointer since * usb_kill_urb allows it. */ - usb_kill_urb(dev->isoc_ctl.urb[i]); + usb_kill_urb(dev->isoc_ctl.stk1160_urb[i].urb); } stk1160_dbg("all urbs killed\n"); @@ -366,30 +366,25 @@ void stk1160_free_isoc(struct stk1160 *dev) for (i = 0; i < num_bufs; i++) { - urb = dev->isoc_ctl.urb[i]; + urb = dev->isoc_ctl.stk1160_urb[i].urb; if (urb) { - if (dev->isoc_ctl.transfer_buffer[i]) { + if (dev->isoc_ctl.stk1160_urb[i].transfer_buffer) { #ifndef CONFIG_DMA_NONCOHERENT usb_free_coherent(dev->udev, urb->transfer_buffer_length, - dev->isoc_ctl.transfer_buffer[i], + dev->isoc_ctl.stk1160_urb[i].transfer_buffer, urb->transfer_dma); #else - kfree(dev->isoc_ctl.transfer_buffer[i]); + kfree(dev->isoc_ctl.stk1160_urb[i].transfer_buffer); #endif } usb_free_urb(urb); - dev->isoc_ctl.urb[i] = NULL; + dev->isoc_ctl.stk1160_urb[i].urb = NULL; } - dev->isoc_ctl.transfer_buffer[i] = NULL; + dev->isoc_ctl.stk1160_urb[i].transfer_buffer = NULL; } - kfree(dev->isoc_ctl.urb); - kfree(dev->isoc_ctl.transfer_buffer); - - dev->isoc_ctl.urb = NULL; - dev->isoc_ctl.transfer_buffer = NULL; dev->isoc_ctl.num_bufs = 0; stk1160_dbg("all urb buffers freed\n"); @@ -429,19 +424,6 @@ int stk1160_alloc_isoc(struct stk1160 *dev) dev->isoc_ctl.buf = NULL; dev->isoc_ctl.max_pkt_size = dev->max_pkt_size; - dev->isoc_ctl.urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); - if (!dev->isoc_ctl.urb) { - stk1160_err("out of memory for urb array\n"); - return -ENOMEM; - } - - dev->isoc_ctl.transfer_buffer = kcalloc(num_bufs, sizeof(void *), - GFP_KERNEL); - if (!dev->isoc_ctl.transfer_buffer) { - stk1160_err("out of memory for usb transfers\n"); - kfree(dev->isoc_ctl.urb); - return -ENOMEM; - } /* allocate urbs and transfer buffers */ for (i = 0; i < num_bufs; i++) { @@ -449,15 +431,15 @@ int stk1160_alloc_isoc(struct stk1160 *dev) urb = usb_alloc_urb(max_packets, GFP_KERNEL); if (!urb) goto free_i_bufs; - dev->isoc_ctl.urb[i] = urb; + dev->isoc_ctl.stk1160_urb[i].urb = urb; #ifndef CONFIG_DMA_NONCOHERENT - dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev, - sb_size, GFP_KERNEL, &urb->transfer_dma); + dev->isoc_ctl.stk1160_urb[i].transfer_buffer = + usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL, &urb->transfer_dma); #else - dev->isoc_ctl.transfer_buffer[i] = kmalloc(sb_size, GFP_KERNEL); + dev->isoc_ctl.stk1160_urb[i].transfer_buffer = kmalloc(sb_size, GFP_KERNEL); #endif - if (!dev->isoc_ctl.transfer_buffer[i]) { + if (!dev->isoc_ctl.stk1160_urb[i].transfer_buffer) { stk1160_err("cannot alloc %d bytes for tx[%d] buffer\n", sb_size, i); @@ -466,14 +448,14 @@ int stk1160_alloc_isoc(struct stk1160 *dev) goto free_i_bufs; goto nomore_tx_bufs; } - memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size); + memset(dev->isoc_ctl.stk1160_urb[i].transfer_buffer, 0, sb_size); /* * FIXME: Where can I get the endpoint? */ urb->dev = dev->udev; urb->pipe = usb_rcvisocpipe(dev->udev, STK1160_EP_VIDEO); - urb->transfer_buffer = dev->isoc_ctl.transfer_buffer[i]; + urb->transfer_buffer = dev->isoc_ctl.stk1160_urb[i].transfer_buffer; urb->transfer_buffer_length = sb_size; urb->complete = stk1160_isoc_irq; urb->context = dev; @@ -508,8 +490,8 @@ int stk1160_alloc_isoc(struct stk1160 *dev) * enough to work fine, so we just free the extra urb, * store the allocated count and keep going, fingers crossed! */ - usb_free_urb(dev->isoc_ctl.urb[i]); - dev->isoc_ctl.urb[i] = NULL; + usb_free_urb(dev->isoc_ctl.stk1160_urb[i].urb); + dev->isoc_ctl.stk1160_urb[i].urb = NULL; stk1160_warn("%d urbs allocated. Trying to continue...\n", i); diff --git a/drivers/media/usb/stk1160/stk1160.h b/drivers/media/usb/stk1160/stk1160.h index a31ea1c80f25..1ffca1343d88 100644 --- a/drivers/media/usb/stk1160/stk1160.h +++ b/drivers/media/usb/stk1160/stk1160.h @@ -84,6 +84,11 @@ struct stk1160_buffer { unsigned int pos; /* current pos inside buffer */ }; +struct stk1160_urb { + struct urb *urb; + char *transfer_buffer; +}; + struct stk1160_isoc_ctl { /* max packet size of isoc transaction */ int max_pkt_size; @@ -91,11 +96,7 @@ struct stk1160_isoc_ctl { /* number of allocated urbs */ int num_bufs; - /* urb for isoc transfers */ - struct urb **urb; - - /* transfer buffers for isoc transfer */ - char **transfer_buffer; + struct stk1160_urb stk1160_urb[STK1160_NUM_BUFS]; /* current buffer */ struct stk1160_buffer *buf;