From patchwork Thu Aug 7 03:43:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bo Shen X-Patchwork-Id: 4689191 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 1F46A9FADA for ; Thu, 7 Aug 2014 03:45:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5A4D52017D for ; Thu, 7 Aug 2014 03:45:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 96BA420145 for ; Thu, 7 Aug 2014 03:45:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XFEcD-0006B0-D6; Thu, 07 Aug 2014 03:43:45 +0000 Received: from nasmtp01.atmel.com ([192.199.1.245] helo=DVREDG01.corp.atmel.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XFEcA-00067n-15 for linux-arm-kernel@lists.infradead.org; Thu, 07 Aug 2014 03:43:42 +0000 Received: from sjogate2.atmel.com (10.42.103.223) by DVREDG01.corp.atmel.com (10.42.103.30) with Microsoft SMTP Server id 14.2.347.0; Wed, 6 Aug 2014 21:43:14 -0600 Received: from mango.corp.atmel.com ([10.217.2.46]) by sjogate2.atmel.com (8.13.6/8.13.6) with ESMTP id s773Z7Cq024054; Wed, 6 Aug 2014 20:35:08 -0700 (PDT) From: Bo Shen To: Felipe Balbi Subject: [PATCH] USB: atmel_usba_udc: fix it to deal with final DMA channel Date: Thu, 7 Aug 2014 11:43:07 +0800 Message-ID: <1407382987-11242-1-git-send-email-voice.shen@atmel.com> X-Mailer: git-send-email 1.8.5.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140806_204342_152028_17FD7721 X-CRM114-Status: UNSURE ( 8.69 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: linux-usb@vger.kernel.org, nicolas.ferre@atmel.com, linux-kernel@vger.kernel.org, liaops@embest-tech.com, Bo Shen , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As, the interrupt for DMA is counted from 1, so need to checked the USBA_NR_DMAS, in old way, it only check (USBA_NR_DMAS - 1), so fix it. Reported-by: Max Liao Signed-off-by: Bo Shen --- drivers/usb/gadget/udc/atmel_usba_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 906e65f..c9fe67e 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1661,7 +1661,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (dma_status) { int i; - for (i = 1; i < USBA_NR_DMAS; i++) + for (i = 1; i <= USBA_NR_DMAS; i++) if (dma_status & (1 << i)) usba_dma_irq(udc, &udc->usba_ep[i]); }