From patchwork Thu Oct 27 08:21:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13021771 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC87BC38A2D for ; Thu, 27 Oct 2022 08:22:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234953AbiJ0IWt (ORCPT ); Thu, 27 Oct 2022 04:22:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234927AbiJ0IWp (ORCPT ); Thu, 27 Oct 2022 04:22:45 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 611D61CB0C; Thu, 27 Oct 2022 01:22:43 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.95,217,1661785200"; d="scan'208";a="140573960" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 27 Oct 2022 17:22:43 +0900 Received: from localhost.localdomain (unknown [10.226.93.45]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id DCFE24048F22; Thu, 27 Oct 2022 17:22:37 +0900 (JST) From: Biju Das To: Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Biju Das , Vincent Mailhol , =?utf-8?q?Stefan_M=C3=A4tje?= , Ulrich Hecht , Lad Prabhakar , Christophe JAILLET , linux-can@vger.kernel.org, netdev@vger.kernel.org, Geert Uytterhoeven , Chris Paterson , Biju Das , linux-renesas-soc@vger.kernel.org Subject: [PATCH v3 6/6] can: rcar_canfd: Add has_gerfl_eef to struct rcar_canfd_hw_info Date: Thu, 27 Oct 2022 09:21:58 +0100 Message-Id: <20221027082158.95895-7-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221027082158.95895-1-biju.das.jz@bp.renesas.com> References: <20221027082158.95895-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org R-Car has ECC error flags in global error interrupts whereas it is not available on RZ/G2L. Add has_gerfl_eef to struct rcar_canfd_hw_info so that rcar_canfd_ global_error() will process ECC errors only for R-Car. whilst, this patch fixes the below checkpatch warnings CHECK: Unnecessary parentheses around 'ch == 0' CHECK: Unnecessary parentheses around 'ch == 1' Signed-off-by: Biju Das Reviewed-by: Geert Uytterhoeven --- v2->v3: * No change. v1->v2: * Replaced info->has_gerfl to gpriv->info->has_gerfl and wrapped the ECC error flag check within single if statement. --- drivers/net/can/rcar/rcar_canfd.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index f8eafb132b39..00242eac377d 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -523,6 +523,7 @@ struct rcar_canfd_hw_info { /* hardware features */ unsigned shared_global_irqs:1; /* Has shared global irqs */ unsigned multi_channel_irqs:1; /* Has multiple channel irqs */ + unsigned has_gerfl_eef:1; /* Has ECC Error Flag */ }; /* Channel priv data */ @@ -596,6 +597,7 @@ static const struct rcar_canfd_hw_info rcar_gen3_hw_info = { .max_channels = 2, .postdiv = 2, .shared_global_irqs = 1, + .has_gerfl_eef = 1, }; static const struct rcar_canfd_hw_info rzg2l_hw_info = { @@ -608,6 +610,7 @@ static const struct rcar_canfd_hw_info r8a779a0_hw_info = { .max_channels = 8, .postdiv = 2, .shared_global_irqs = 1, + .has_gerfl_eef = 1, }; /* Helper functions */ @@ -955,13 +958,15 @@ static void rcar_canfd_global_error(struct net_device *ndev) u32 ridx = ch + RCANFD_RFFIFO_IDX; gerfl = rcar_canfd_read(priv->base, RCANFD_GERFL); - if ((gerfl & RCANFD_GERFL_EEF0) && (ch == 0)) { - netdev_dbg(ndev, "Ch0: ECC Error flag\n"); - stats->tx_dropped++; - } - if ((gerfl & RCANFD_GERFL_EEF1) && (ch == 1)) { - netdev_dbg(ndev, "Ch1: ECC Error flag\n"); - stats->tx_dropped++; + if (gpriv->info->has_gerfl_eef) { + if ((gerfl & RCANFD_GERFL_EEF0) && ch == 0) { + netdev_dbg(ndev, "Ch0: ECC Error flag\n"); + stats->tx_dropped++; + } + if ((gerfl & RCANFD_GERFL_EEF1) && ch == 1) { + netdev_dbg(ndev, "Ch1: ECC Error flag\n"); + stats->tx_dropped++; + } } if (gerfl & RCANFD_GERFL_MES) { sts = rcar_canfd_read(priv->base,