From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938664AbcKNC5a (ORCPT ); Sun, 13 Nov 2016 21:57:30 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:47094 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933685AbcKNCYQ (ORCPT ); Sun, 13 Nov 2016 21:24:16 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Felipe Balbi" Date: Mon, 14 Nov 2016 00:14:20 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 219/346] usb: gadget: udc: core: don't starve DMA resources In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.39-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Felipe Balbi commit 23fd537c9508fb6e3b93ddf23982f51afc087781 upstream. Always unmap all SG entries as required by DMA API Fixes: a698908d3b3b ("usb: gadget: add generic map/unmap request utilities") Signed-off-by: Felipe Balbi [bwh: Backported to 3.16: adjust filename, context] Signed-off-by: Ben Hutchings --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -91,7 +91,7 @@ void usb_gadget_unmap_request(struct usb return; if (req->num_mapped_sgs) { - dma_unmap_sg(&gadget->dev, req->sg, req->num_mapped_sgs, + dma_unmap_sg(&gadget->dev, req->sg, req->num_sgs, is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->num_mapped_sgs = 0;