Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753364AbcCXPjb (ORCPT ); Thu, 24 Mar 2016 11:39:31 -0400 Received: from eusmtp01.atmel.com ([212.144.249.243]:32348 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751359AbcCXPjX (ORCPT ); Thu, 24 Mar 2016 11:39:23 -0400 Subject: Re: [PATCH 1/1] net: macb: replace macb_writel() call by queue_writel() to update queue ISR To: Cyrille Pitchen , , , , References: <1458830404-6213-1-git-send-email-cyrille.pitchen@atmel.com> CC: From: Nicolas Ferre Organization: atmel Message-ID: <56F40A30.6030907@atmel.com> Date: Thu, 24 Mar 2016 16:39:28 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <1458830404-6213-1-git-send-email-cyrille.pitchen@atmel.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.161.30.18] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1507 Lines: 46 Le 24/03/2016 15:40, Cyrille Pitchen a ?crit : > macb_interrupt() should not use macb_writel(bp, ISR, ) but only > queue_writel(queue, ISR, ). > > There is one IRQ and one set of {ISR, IER, IDR, IMR} [1] registers per > queue on gem hardware, though only queue0 is actually used for now to > receive frames: other queues can already be used to transmit frames. > > The queue_readl() and queue_writel() helper macros are designed to access > the relevant IRQ registers. > > [1] > ISR: Interrupt Status Register > IER: Interrupt Enable Register > IDR: Interrupt Disable Register > IMR: Interrupt Mask Register > > Signed-off-by: Cyrille Pitchen > Fixes: bfbb92c44670 ("net: macb: Handle the RXUBR interrupt on all devices") Acked-by: Nicolas Ferre Thanks! > --- > drivers/net/ethernet/cadence/macb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c > index 39447a337149..c9c6b2762a39 100644 > --- a/drivers/net/ethernet/cadence/macb.c > +++ b/drivers/net/ethernet/cadence/macb.c > @@ -1146,7 +1146,7 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) > macb_writel(bp, NCR, ctrl | MACB_BIT(RE)); > > if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) > - macb_writel(bp, ISR, MACB_BIT(RXUBR)); > + queue_writel(queue, ISR, MACB_BIT(RXUBR)); > } > > if (status & MACB_BIT(ISR_ROVR)) { > -- Nicolas Ferre