From patchwork Wed Jan 10 18:03:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10155787 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 DED46602D8 for ; Wed, 10 Jan 2018 18:05:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D421720499 for ; Wed, 10 Jan 2018 18:05:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C74FA209CE; Wed, 10 Jan 2018 18:05:04 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable 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 54F0720499 for ; Wed, 10 Jan 2018 18:05:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752799AbeAJSEu (ORCPT ); Wed, 10 Jan 2018 13:04:50 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:37254 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752268AbeAJSDc (ORCPT ); Wed, 10 Jan 2018 13:03:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=PBiT/6fPlxw4vQy0BCMmj9W1v1dHz5v2sdt5aCPHBnE=; b=XgEryKA1pMHUw2MjgQy0QXk0C /kUky9CyJP7VspuMNH94iFaXh0vrwu69BK5Pn1Q/GOgSDnT/utlifQpD4e25p4Y0jmjwplzrOooDR Kz54DcsvdwVz9jfZOzB1WFq/Mcn3MTmcXxjZxqOnaGcLeNpK6hN4Xig/+n3uIbZ1/+c7qeIWoKnSA FO1n+mTYRf7ArFYcQIwEyw6Dqqc81YdSYt4txMw3z40knjXk2WUxvGDEtypRvdwqSkZT5aI5P1u+U Xv7atesAtBzc2mWLG0/nAtf/c0NIpAuHX3t/m8VefS8FnqzYeeO/FoepBIbtq0ggBF/bErYtQwKmR sbtl+cY0g==; Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.89 #1 (Red Hat Linux)) id 1eZKio-0000bX-RH; Wed, 10 Jan 2018 18:03:31 +0000 From: Christoph Hellwig To: Bjorn Helgaas , Mauro Carvalho Chehab Cc: Kong Lai , linux-pci@vger.kernel.org, linux-media@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] media/ttusb-dev: remove pci_zalloc_coherent abuse Date: Wed, 10 Jan 2018 19:03:20 +0100 Message-Id: <20180110180322.30186-3-hch@lst.de> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20180110180322.30186-1-hch@lst.de> References: <20180110180322.30186-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Switch to a plain kzalloc instead of pci_zalloc_coherent to allocate memory for the USB DMA. Signed-off-by: Christoph Hellwig --- drivers/media/usb/ttusb-dec/ttusb_dec.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index cdefb5dfbbdc..4d5acdf578a6 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -127,7 +127,6 @@ struct ttusb_dec { struct urb *irq_urb; dma_addr_t irq_dma_handle; void *iso_buffer; - dma_addr_t iso_dma_handle; struct urb *iso_urb[ISO_BUF_COUNT]; int iso_stream_count; struct mutex iso_mutex; @@ -1185,11 +1184,7 @@ static void ttusb_dec_free_iso_urbs(struct ttusb_dec *dec) for (i = 0; i < ISO_BUF_COUNT; i++) usb_free_urb(dec->iso_urb[i]); - - pci_free_consistent(NULL, - ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * - ISO_BUF_COUNT), - dec->iso_buffer, dec->iso_dma_handle); + kfree(dec->iso_buffer); } static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) @@ -1198,15 +1193,10 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) dprintk("%s\n", __func__); - dec->iso_buffer = pci_zalloc_consistent(NULL, - ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT), - &dec->iso_dma_handle); - - if (!dec->iso_buffer) { - dprintk("%s: pci_alloc_consistent - not enough memory\n", - __func__); + dec->iso_buffer = kcalloc(FRAMES_PER_ISO_BUF * ISO_BUF_COUNT, + ISO_FRAME_SIZE, GFP_KERNEL); + if (!dec->iso_buffer) return -ENOMEM; - } for (i = 0; i < ISO_BUF_COUNT; i++) { struct urb *urb;