From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF4E1C004C9 for ; Tue, 7 May 2019 06:43:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9073B205C9 for ; Tue, 7 May 2019 06:43:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=geanix.com header.i=@geanix.com header.b="YpnfD3eb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726517AbfEGGnB (ORCPT ); Tue, 7 May 2019 02:43:01 -0400 Received: from first.geanix.com ([116.203.34.67]:39484 "EHLO first.geanix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725839AbfEGGnB (ORCPT ); Tue, 7 May 2019 02:43:01 -0400 Received: from localhost (unknown [193.163.1.7]) by first.geanix.com (Postfix) with ESMTPSA id 89BE237F; Tue, 7 May 2019 06:42:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=geanix.com; s=first; t=1557211340; bh=3j7hsqfL5Ak7/I07fcDuhw+qz+OMng7K/tE0F6C+WWc=; h=From:To:Cc:Subject:Date; b=YpnfD3eb+YPB29xtHpf26lp5faJa0/sZ8OX2+NSJ2QW+/NScicNU6T6JX1g3Kg3f6 IUGDshncsdRa2a5FrzIMOxteBADFg/AHlrzgnzeNA7/T56yTA1LkbUFimWQdHZIsKx ySxur8Sbd9oMaLAhvyRekPecYEbghUG7wn6XtHGtvxLt5tJ71/yb7/bbcpgFhLiw5g ejOjnAvTl365nf7U6gy1vdM9elJYt3F+FBic6C+Nl6tHjny0SULOoZJnMMVLwP8GOm q3AZ2HPjAtdXCX2+XyHroO/58jQPbwIniou1yVagmQkngEZQ9WgM7jNRHIdppKubr6 uTMDQMpF3nUvQ== From: Esben Haabendal To: netdev@vger.kernel.org Cc: "David S. Miller" , Michal Simek , Andrew Lunn , YueHaibing , Yang Wei , Luis Chamberlain , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] net: ll_temac: Improve error message on error IRQ Date: Tue, 7 May 2019 08:42:57 +0200 Message-Id: <20190507064258.2790-1-esben@geanix.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The channel status register value can be very helpful when debugging SDMA problems. Signed-off-by: Esben Haabendal --- drivers/net/ethernet/xilinx/ll_temac_main.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c index 9851991..36fc4c4 100644 --- a/drivers/net/ethernet/xilinx/ll_temac_main.c +++ b/drivers/net/ethernet/xilinx/ll_temac_main.c @@ -886,8 +886,10 @@ static irqreturn_t ll_temac_tx_irq(int irq, void *_ndev) if (status & (IRQ_COAL | IRQ_DLY)) temac_start_xmit_done(lp->ndev); - if (status & 0x080) - dev_err(&ndev->dev, "DMA error 0x%x\n", status); + if (status & (IRQ_ERR | IRQ_DMAERR)) + dev_err_ratelimited(&ndev->dev, + "TX error 0x%x TX_CHNL_STS=0x%08x\n", + status, lp->dma_in(lp, TX_CHNL_STS)); return IRQ_HANDLED; } @@ -904,6 +906,10 @@ static irqreturn_t ll_temac_rx_irq(int irq, void *_ndev) if (status & (IRQ_COAL | IRQ_DLY)) ll_temac_recv(lp->ndev); + if (status & (IRQ_ERR | IRQ_DMAERR)) + dev_err_ratelimited(&ndev->dev, + "RX error 0x%x RX_CHNL_STS=0x%08x\n", + status, lp->dma_in(lp, RX_CHNL_STS)); return IRQ_HANDLED; } -- 2.4.11