From patchwork Mon Nov 27 09:04:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469286 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="MPzl9jCx" Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DBF8B183 for ; Mon, 27 Nov 2023 01:04:43 -0800 (PST) Received: by mail-ej1-x62c.google.com with SMTP id a640c23a62f3a-a02c48a0420so538391066b.2 for ; Mon, 27 Nov 2023 01:04:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075882; x=1701680682; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=f1Odgh8NQ+ymmAyVzkExaOV4kNSDq/6wv5PLiqzNFYg=; b=MPzl9jCxhIUN6DjkTUK94dkPbCkWZ1DjnfDjx6uOOvWT6PjCae5EzmolsWinzmZaDz K2Vixs6mgTPcu+u670olQFdDmbWA0nZf3A+wb15aMQc26Ga6DmyI6Yc1617gtHzxCf0o 0Is6WO1rNR1GkZUxprIeqIGRu8ftoxs3D64nP4hGBzj+S/IcDIOlZp+UEJSPHCdoFdpm mttuZ05PnlSdRjjgPNxCtYtOQc/ivHVlSifejBhvbGzOOMMcz880QivPgMcWeACWCYmI IeBip2veRpGlkuGCRxiGYxyAFLZ/CjYkq8CzC13J7MlOe+FyIdyu2owObzrm77AuHCXI cItw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075882; x=1701680682; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=f1Odgh8NQ+ymmAyVzkExaOV4kNSDq/6wv5PLiqzNFYg=; b=BxsEt8M+OQBAnbhAnLj3Lix4RPQXAJ4rAybUwTHw25R3j5n771YbRdssGiAsr6s/yQ p6trOD2n6aNCqkXEPBdx/l+tZXeKltXEpoWv1NVV1cYWm1DzBSeg5hSZnEYoWeBFS0jv x/6mGNWszK4gojplYImf0siH+X4lutRwTv3BEqWqxyev9SSbRuMrozInq2vyRKvhVAsN e3qzHNTgYLA8h9GNPFDZ1/kE8ULJ7RQknCXUqJLdss821vOsYo+YhDZrukb9QFK1fH5V 83vXEiL2Gl4GpPn8Odi8/FwD2Vvdlk6Jo/XZHmpMSRpH9irqzcxLY8+iETankaIqfRy3 Cf5Q== X-Gm-Message-State: AOJu0YzwBARHOOUqxE6y6QFdm2KHoMYaGgayLNpSd9mm6x9uJRD3yn4o mMr0Bx67ORWtM3bVWAUqPuJuvg== X-Google-Smtp-Source: AGHT+IGyVXfUv1sDMUPq/6NZ7GqiTKqXeM9iCEMC+wqTiTcYkSKLXtlJyA2qzpJxPGOMLqTAsDKrKA== X-Received: by 2002:a17:906:10d:b0:a00:2686:6b40 with SMTP id 13-20020a170906010d00b00a0026866b40mr6513858eje.14.1701075882183; Mon, 27 Nov 2023 01:04:42 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:41 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 1/6] net: ravb: Check return value of reset_control_deassert() Date: Mon, 27 Nov 2023 11:04:21 +0200 Message-Id: <20231127090426.3761729-2-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea reset_control_deassert() could return an error. Some devices cannot work if reset signal de-assert operation fails. To avoid this check the return code of reset_control_deassert() in ravb_probe() and take proper action. Fixes: 0d13a1a464a0 ("ravb: Add reset support") Signed-off-by: Claudiu Beznea Reviewed-by: Philipp Zabel Reviewed-by: Sergey Shtylyov Reviewed-by: Sergey Shtylyov --- Changes since [1]: - added goto label for free_netdev() [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index c70cff80cc99..50c4c79be035 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2645,7 +2645,10 @@ static int ravb_probe(struct platform_device *pdev) ndev->features = info->net_features; ndev->hw_features = info->net_hw_features; - reset_control_deassert(rstc); + error = reset_control_deassert(rstc); + if (error) + goto out_free_netdev; + pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); @@ -2872,11 +2875,11 @@ static int ravb_probe(struct platform_device *pdev) out_disable_refclk: clk_disable_unprepare(priv->refclk); out_release: - free_netdev(ndev); - pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); reset_control_assert(rstc); +out_free_netdev: + free_netdev(ndev); return error; } From patchwork Mon Nov 27 09:04:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469287 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="Cy84VwcD" Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3331E18A for ; Mon, 27 Nov 2023 01:04:45 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id 4fb4d7f45d1cf-543456dbd7bso9457757a12.1 for ; Mon, 27 Nov 2023 01:04:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075883; x=1701680683; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=SY105oJjqBLJjrNiZ881NJwgu30bKrulY2ZruFXx9EI=; b=Cy84VwcD08LovmdeluY81pY4hAxrPC/7PtZXICdWX86mK7rGn5tzGvr/0Dixx9M34c PrRrOJPAVkN53uadZIHupv8vw8QrB2kHVuEzz4+QiAqiBGrTLo1Eb/XsNircAQ5wcuTK VIaJhxKj5MlCGXgy/5d9FF4SIvYNmyd3Qo7ihEGVwgZCNkhMPEAXtSHgJsfEAyiSeGBB 9kAvls/FfeXBq00H6X2HYiBiDZYCvjNk3oyG8ytiw0pudB9Ajc0ifHIUIOBBnz6+ofdh /3KkXn8vCe8fKYN8w1iFlmaWVSYMof2tr+Ht1Jm9Fs0aflYkcDfB2iO1y5ssYiMI0BGV w6pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075883; x=1701680683; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SY105oJjqBLJjrNiZ881NJwgu30bKrulY2ZruFXx9EI=; b=T7WeHl7Zb71epUAtPd4FGjK+m47M3x0ppstj5htzpCjxtYHqDDHK6v2/Qw2ztKhDxv aC0uABo4mWzrTi0ofF/aobH08Cg8RdTweT9b72vyc6LabpGWx4GTDN8iMwgFpieTaFuz jPxm7Scxozm1ngtb/KcRBa6kiEC7OZRY+maAw1HKsphI3LdJxLOU9JHui4YCtejwsUYQ tcZD8UPXChC/WtZUtRCAKuhbCbm2xYyVRqji5hmWoLQLMKSV5mSNwNwyBBxud44lgvTa n3M0RhtZQGkNuhM3DiqEU739qv3UvVUZg3gDHFyGlcgc3o9qO25NszD7ZdkCFAllQGdD SCbw== X-Gm-Message-State: AOJu0YzoSMgx6CSkvukfG2jerZRKPQ56bCOpvrPur+sYUZklgD7osPem OpP6FOFXAiZTSFwsp65QO8VGtQ== X-Google-Smtp-Source: AGHT+IE8VvNviNCZfHfu2FY1K+dZrQy6vqtZ9sx52MzgYilOK6puI7wCb7uyJ3cx0P9Jel53TArD0A== X-Received: by 2002:a17:906:c44:b0:9ff:889c:c2ff with SMTP id t4-20020a1709060c4400b009ff889cc2ffmr12596865ejf.22.1701075883737; Mon, 27 Nov 2023 01:04:43 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:43 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 2/6] net: ravb: Use pm_runtime_resume_and_get() Date: Mon, 27 Nov 2023 11:04:22 +0200 Message-Id: <20231127090426.3761729-3-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea pm_runtime_get_sync() may return an error. In case it returns with an error dev->power.usage_count needs to be decremented. pm_runtime_resume_and_get() takes care of this. Thus use it. Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Signed-off-by: Claudiu Beznea Reviewed-by: Sergey Shtylyov --- Changes since [1]: - added goto label for pm_runtime_disable(); with this innecessary changes were removed [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 50c4c79be035..cd3474168452 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2650,7 +2650,9 @@ static int ravb_probe(struct platform_device *pdev) goto out_free_netdev; pm_runtime_enable(&pdev->dev); - pm_runtime_get_sync(&pdev->dev); + error = pm_runtime_resume_and_get(&pdev->dev); + if (error < 0) + goto out_runtime_disable; if (info->multi_irqs) { if (info->err_mgmt_irqs) @@ -2876,6 +2878,7 @@ static int ravb_probe(struct platform_device *pdev) clk_disable_unprepare(priv->refclk); out_release: pm_runtime_put(&pdev->dev); +out_runtime_disable: pm_runtime_disable(&pdev->dev); reset_control_assert(rstc); out_free_netdev: From patchwork Mon Nov 27 09:04:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469288 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="mOW8jygG" Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0335F18C for ; Mon, 27 Nov 2023 01:04:47 -0800 (PST) Received: by mail-ej1-x62f.google.com with SMTP id a640c23a62f3a-a04196fc957so570454866b.2 for ; Mon, 27 Nov 2023 01:04:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075885; x=1701680685; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=sQu10j0QwV+Ad1UGRhRRU7KzoLHJiBSEBkkZ5ea4Ue8=; b=mOW8jygGTTUSGr7OMcMHFQIUAKrZcmdrT0Lm9SCUKlwpmtlg/4E8Beo5KiXx+LW4tE CWiI0Bu77dttGNPMVAQxqOV8LaevIHY6Lpo54B8c+2ystx8GJxlnSct7WrkFeobHxSrV Tncu3FJt7ZOqm11A5bxL9nr3OFeU2IuQR3zlgAnAOJzpuwLnNw+C9db/NwnW/qGyHd68 rTF/zjAJhqIvEhGRfTxPcPLwbzKWPrw/457bv4DZ94JWReWw+GbvkewGnyOtMPwS/CO9 G7iWfj6FATirr5rGhp4ECHCV6Al/cBGsyNHjzW2W3HsgsmdZgf2K5tWnaQ0UyoEjICEv XA5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075885; x=1701680685; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sQu10j0QwV+Ad1UGRhRRU7KzoLHJiBSEBkkZ5ea4Ue8=; b=VfsmcSWKUBwWkZ2oz2wmu6nGMu7R8iT7l7Xy+aiEWrWEY/peSUA2eiN20KqNO/9Edk 3Iwu/PC0QG5R72RG8ZvUlKl6lVyp6ZnxVRUcb2pi2wLSDF5siFBrqiAL9YOfT1CLK62/ xLN4DZfzfW993dEvDcYk1ZR8VaQ1/FvIwWB8NEE6Xo3xfg8YPqK1sO7yJ58ub+jN5DhR t3WPW8pwtXHpMj46sPEX7OJUDNFe5o6YMFONlenyEyNo8qltnuvc5VOwmhhVY2kdpyVB a9DmsepRX7kyX5vofpMYVocUtQr4Ry6cSRV6OyCnWBdKNy7DbPj9vqUrhJgx4R3wNmMO Ob3g== X-Gm-Message-State: AOJu0Yz/bOTEhDiyFLvdXukhU0wci0yJ6ermNuGKoo2uEieRshKrFjcw fjT7BvsNO3/mudnTS0uIARNKyA== X-Google-Smtp-Source: AGHT+IGISQK94Ry155vVV8zvw2RP+e6FJAj5j8pFkqlLI+MX3mV1b6v4bHggEslm10y8MkPvbBynTQ== X-Received: by 2002:a17:906:eb0f:b0:a02:95ea:1289 with SMTP id mb15-20020a170906eb0f00b00a0295ea1289mr8362060ejb.20.1701075885302; Mon, 27 Nov 2023 01:04:45 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:44 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 3/6] net: ravb: Make write access to CXR35 first before accessing other EMAC registers Date: Mon, 27 Nov 2023 11:04:23 +0200 Message-Id: <20231127090426.3761729-4-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea Hardware manual of RZ/G3S (and RZ/G2L) specifies the following on the description of CXR35 register (chapter "PHY interface select register (CXR35)"): "After release reset, make write-access to this register before making write-access to other registers (except MDIOMOD). Even if not need to change the value of this register, make write-access to this register at least one time. Because RGMII/MII MODE is recognized by accessing this register". The setup procedure for EMAC module (chapter "Setup procedure" of RZ/G3S, RZ/G2L manuals) specifies the E-MAC.CXR35 register is the first EMAC register that is to be configured. Note [A] from chapter "PHY interface select register (CXR35)" specifies the following: [A] The case which CXR35 SEL_XMII is used for the selection of RGMII/MII in APB Clock 100 MHz. (1) To use RGMII interface, Set ‘H’03E8_0000’ to this register. (2) To use MII interface, Set ‘H’03E8_0002’ to this register. Take into account these indication. Fixes: 1089877ada8d ("ravb: Add RZ/G2L MII interface support") Signed-off-by: Claudiu Beznea Reviewed-by: Sergey Shtylyov --- Changes since [1]: - collected Rb tag [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index cd3474168452..2d4f4fb3d16e 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -515,6 +515,15 @@ static void ravb_emac_init_gbeth(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); + if (priv->phy_interface == PHY_INTERFACE_MODE_MII) { + ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_MII, CXR35); + ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, 0); + } else { + ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_RGMII, CXR35); + ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, + CXR31_SEL_LINK0); + } + /* Receive frame limit set register */ ravb_write(ndev, GBETH_RX_BUFF_MAX + ETH_FCS_LEN, RFLR); @@ -537,14 +546,6 @@ static void ravb_emac_init_gbeth(struct net_device *ndev) /* E-MAC interrupt enable register */ ravb_write(ndev, ECSIPR_ICDIP, ECSIPR); - - if (priv->phy_interface == PHY_INTERFACE_MODE_MII) { - ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, 0); - ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_MII, CXR35); - } else { - ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, - CXR31_SEL_LINK0); - } } static void ravb_emac_init_rcar(struct net_device *ndev) From patchwork Mon Nov 27 09:04:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469289 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="m079bd8O" Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EDFA19B for ; Mon, 27 Nov 2023 01:04:48 -0800 (PST) Received: by mail-ej1-x629.google.com with SMTP id a640c23a62f3a-a02d12a2444so571170166b.3 for ; Mon, 27 Nov 2023 01:04:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075887; x=1701680687; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ELkubP0P+TLGoCnHyLiXJ02PqgLHPPVcTUt4fu5hI+U=; b=m079bd8OcJFjx2msty6Z505gA3PCNLsaHAVt4LHONHEE7B36nWigeeRxBK3dbs0a4k SzOzokAVadlBLFaTRAUNwFBBpX9tvxtJ7PwSwOyOKiRHwMXLRpzZ/poRfBuggQ02BsY8 KDAyh67FRQ/Pm7U19f+eRHBw/buiigB3YUIib6QEYsaTZvD9vWEZ51pq3371W7HR1ib4 rB/Fl1a/lT0kpz+AscGl6u5MDKiFzArgxAAiNS0tvizvKDpx+SGpKc1GgsMzMAId3cnZ fRMiO0hpo0xRQnNdguTt5CrLrs5bKofZuw/i9lW42cOFi3tBYCpC8zOYX/n7lzrM+E0s bPJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075887; x=1701680687; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ELkubP0P+TLGoCnHyLiXJ02PqgLHPPVcTUt4fu5hI+U=; b=Md0tWDw1wpaI1nmS3ZoXcIktv+4CHBATaQ3S88nq5EK1hLUOkqP9iCuKnvUBcKykPm tCE3SL4XhlL8aX//ZHWc0pA++wsKzrZAAjmhCLhss67WXKvaqDiBp2Uhjd6OoFY/qwvA 6IduoFXA4YUt1iNsnB+0DLHyu0ry6C38dGIq2mHD3PJherCGlEiOlycCrWnGlCWuZ+1A fFcwZ5EHSV5Ei8/j+QdPZ5q6i+JKGV56NzeyfjY1HW5Du+EaRp8J7UqgihRpQu8wGfJ6 2MgtEa1sXBLSV15SOCmGswYfOOk72zySBho0VAcP839KQeYFDeSPBh9/q6fwCqkQjMs2 ie0Q== X-Gm-Message-State: AOJu0YzFJzCxMdPjNIdcaDQ/LgU/s7h79Qr7RlA1hkXMvktnkh7FWq+8 1WNL3u4sTDwScfZRpY7ZiUyrYg== X-Google-Smtp-Source: AGHT+IEIMf4qeMFVDjYLj32OSSye/z3Y4oNh+XijNY2yVvs3ZhGPDM3AVtdECxYxN4j1YBRLpqAqWw== X-Received: by 2002:a17:906:3a87:b0:a03:24d9:12ce with SMTP id y7-20020a1709063a8700b00a0324d912cemr7704534ejd.63.1701075886887; Mon, 27 Nov 2023 01:04:46 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:46 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 4/6] net: ravb: Start TX queues after HW initialization succeeded Date: Mon, 27 Nov 2023 11:04:24 +0200 Message-Id: <20231127090426.3761729-5-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea ravb_phy_start() may fail. If that happens, the TX queues will remain started. Thus, move the netif_tx_start_all_queues() after PHY is successfully initialized. Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Signed-off-by: Claudiu Beznea Reviewed-by: Sergey Shtylyov --- Changes since [1]: - collected Rb tag [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 2d4f4fb3d16e..f7e62e6c9df9 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1812,13 +1812,13 @@ static int ravb_open(struct net_device *ndev) if (info->gptp) ravb_ptp_init(ndev, priv->pdev); - netif_tx_start_all_queues(ndev); - /* PHY control start */ error = ravb_phy_start(ndev); if (error) goto out_ptp_stop; + netif_tx_start_all_queues(ndev); + return 0; out_ptp_stop: From patchwork Mon Nov 27 09:04:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469290 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="mK2+XRTf" Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D462E1AD for ; Mon, 27 Nov 2023 01:04:49 -0800 (PST) Received: by mail-ej1-x633.google.com with SMTP id a640c23a62f3a-a0bdf4eeb46so193960766b.3 for ; Mon, 27 Nov 2023 01:04:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075888; x=1701680688; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=mlwN1qAsHWca5scAvNLuwE5lxsRTiu67SGgg4R0r8Q0=; b=mK2+XRTfjLkVysJyfdFGzgvus2pb0IBOCv6sWeT19Po0xmWmXeF1fnURbwfgrXTZoh mXUzckH4CPLdA0SPT3d33BmXpCTqPx9tEeE4V3hKbwncMAmSCzd5N7dackSvibWFhtBU 777w/QINmqmeNPb0gMNzogDgRQjo3sxsyO0t8jic6+uJquqkoiy+eYw5MkEC/V3NO0fE S1PFx7PVKkA9FRhyof+DNq38cie0OWM1J7Iej1lxVWIBephtRBsUJebF+99rBkzDtCMh X8O/Nlib/4jFfj18+lHStyX2BDPEF14M6Zqaxh1LvA/8Icm2yUR0d+EFLahRGIidh9EF B/Rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075888; x=1701680688; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mlwN1qAsHWca5scAvNLuwE5lxsRTiu67SGgg4R0r8Q0=; b=K2AmnvXO6wPJOq0Q8Wl6feOYINYHvCvpEzZ5Pw3/fhUdH/J8KLS9rY8gFYDqlJ/JMk uyYmqn57FJCn4kPsUPf2GMsFlP+WPWFsFmEFsuhw4AKk3Mjn0orpP3qcF5y/1WSPFI0B /mIV6Z+/w0793PweQ41EFFFsJJH51X5x2FrjDbaROBkTXr5AteBIc543khVAMMCgesfG COv4QSFIo+6QDOustCsANnDfLHWSEkbVLpvrP8ICH4jrtdnbZsn0hlHhIrKdVE/wLHyf XywchP3GQtNgi3WGDGdEgQXKSHjHiI48Kh4gclRzMKT/avkdXNRKTyRKhYVjbs6q0VG7 zk6Q== X-Gm-Message-State: AOJu0YxUb+C1a5RKPSg42WLNkbjEnXNsCAJM7Zzka7mZ4hKxDP/Fqkf6 cSnWraDpv0gDD9Tt6M4iql+EFA== X-Google-Smtp-Source: AGHT+IHDt74vApXNuokupSF97i72AROOdDfRVSFnhGnDr0hpPadcCYRP9B7Fma+bCxtiohowOhGS1Q== X-Received: by 2002:a17:906:5817:b0:a00:aa23:34d0 with SMTP id m23-20020a170906581700b00a00aa2334d0mr7398772ejq.68.1701075888425; Mon, 27 Nov 2023 01:04:48 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:48 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 5/6] net: ravb: Stop DMA in case of failures on ravb_open() Date: Mon, 27 Nov 2023 11:04:25 +0200 Message-Id: <20231127090426.3761729-6-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea In case ravb_phy_start() returns with error the settings applied in ravb_dmac_init() are not reverted (e.g. config mode). For this call ravb_stop_dma() on failure path of ravb_open(). Fixes: a0d2f20650e8 ("Renesas Ethernet AVB PTP clock driver") Signed-off-by: Claudiu Beznea Reviewed-by: Sergey Shtylyov --- Changes since [1]: - s/ravb_dma_init/ravb_dmac_init in commit description - collected Rb tag [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index f7e62e6c9df9..805720166ef3 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1825,6 +1825,7 @@ static int ravb_open(struct net_device *ndev) /* Stop PTP Clock driver */ if (info->gptp) ravb_ptp_stop(ndev); + ravb_stop_dma(ndev); out_free_irq_mgmta: if (!info->multi_irqs) goto out_free_irq; From patchwork Mon Nov 27 09:04:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13469291 X-Patchwork-Delegate: kuba@kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="aBN5G60R" Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D542FD59 for ; Mon, 27 Nov 2023 01:04:51 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id 4fb4d7f45d1cf-54b0073d50fso3377348a12.2 for ; Mon, 27 Nov 2023 01:04:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1701075890; x=1701680690; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=AFPzyYcg2nUUJpJ3l3C/kpW+QQW8M0KLB90b9p9tNMM=; b=aBN5G60RGOPaDQLtt8UsvGBjnXb3POhSF2ghUsdTfzN2oXHfPrmoNJltef434ClBBO slK79P+pSwgj3DbfC8MAnMzoSNSm5kQqhB2Sucdk2xin8VM6DmkyXmpkOcP/JMtljC+S rmj8beatuLWIZU1Rmhk25ht5R1OpW1JR5wI31s2wx3UYguaz2dFzsqnvq9/3Cp9zWYaZ akhcNadPZOx86mqInbdYP9I942UpBG5hXpsYXsh0t+NNaIMa5LRrUtZGV/+ZDUruXlzt m7YVObIX0lhe2FAV0ETx95B1txsNYBPYfdkY0h5qStGrBs+RBHdnP9teTM7rbMer6O// vRfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701075890; x=1701680690; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=AFPzyYcg2nUUJpJ3l3C/kpW+QQW8M0KLB90b9p9tNMM=; b=K563LUwnx3rUxETw66v12D9IiQnqK48gcu3d0l62QZ9OeMT2bqQHjpfzK2I3nk7QUU Sf1e1OQna9urB/VCWLhgBIeVli0Bofd5NVzWvjg3hHLM0nlrdkzR7nUAFcllyJBqnuFL oC90eM7a18xAjdNI1YFE8v/kM2+DsEt4wuOziDpb6B8cPkGfGIttnP0pUcumLgvcAD/F p7xf78jtGzDvXMEkzcqIC8NJsyXMPbW0rj2qbc3SKrF7qCJ2wZFiXEC6FDVHXbgQHKTy 8ePsRdZotDjNn5ffsBV+JzvTZnDQx75o4hTgZ4GjhBnNOeOQ2crGd7KE4U9gtsLeq4WI AjRQ== X-Gm-Message-State: AOJu0Yz5ZeraMHhY+LwtERQdFBE9X7xd4fv9GvefAe9MLumxdpkbG5EP WbyVjwYRLhkGYkyi+vQLWkRK9w== X-Google-Smtp-Source: AGHT+IG75ahxVbdOpMa6yVtBJCLfLwgBcjelwbDYnqzwJwKosGZ3obiYPvVpMGx+sQuqdwUax2Sqow== X-Received: by 2002:a17:906:8916:b0:9e6:1dc9:9807 with SMTP id fr22-20020a170906891600b009e61dc99807mr5225024ejc.77.1701075889980; Mon, 27 Nov 2023 01:04:49 -0800 (PST) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.125]) by smtp.gmail.com with ESMTPSA id ay14-20020a170906d28e00b009fad1dfe472sm5456539ejb.153.2023.11.27.01.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 01:04:49 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, geert+renesas@glider.be, wsa+renesas@sang-engineering.com, robh@kernel.org, biju.das.jz@bp.renesas.com, prabhakar.mahadev-lad.rj@bp.renesas.com, mitsuhiro.kimura.kc@renesas.com, masaru.nagai.vx@renesas.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH 6/6] net: ravb: Keep reverse order of operations in ravb_remove() Date: Mon, 27 Nov 2023 11:04:26 +0200 Message-Id: <20231127090426.3761729-7-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> References: <20231127090426.3761729-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea On RZ/G3S SMARC Carrier II board having RGMII connections b/w Ethernet MACs and PHYs it has been discovered that doing unbind/bind for ravb driver in a loop leads to wrong speed and duplex for Ethernet links and broken connectivity (the connectivity cannot be restored even with bringing interface down/up). Before doing unbind/bind the Ethernet interfaces were configured though systemd. The sh instructions used to do unbind/bind were: $ cd /sys/bus/platform/drivers/ravb/ $ while :; do echo 11c30000.ethernet > unbind ; \ echo 11c30000.ethernet > bind; done It has been discovered that there is a race b/w IOCTLs initialized by systemd at the response of success binding and the "ravb_write(ndev, CCC_OPC_RESET, CCC)" instruction in ravb_remove() as follows: 1/ as a result of bind success the user space open/configures the interfaces tough an IOCTL; the following stack trace has been identified on RZ/G3S: Call trace: dump_backtrace+0x9c/0x100 show_stack+0x20/0x38 dump_stack_lvl+0x48/0x60 dump_stack+0x18/0x28 ravb_open+0x70/0xa58 __dev_open+0xf4/0x1e8 __dev_change_flags+0x198/0x218 dev_change_flags+0x2c/0x80 devinet_ioctl+0x640/0x708 inet_ioctl+0x1e4/0x200 sock_do_ioctl+0x50/0x108 sock_ioctl+0x240/0x358 __arm64_sys_ioctl+0xb0/0x100 invoke_syscall+0x50/0x128 el0_svc_common.constprop.0+0xc8/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x34/0xb8 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x190/0x198 2/ this call may execute concurrently with ravb_remove() as the unbind/bind operation was executed in a loop 3/ if the operation mode is changed to RESET (though ravb_write(ndev, CCC_OPC_RESET, CCC) instruction in ravb_remove()) while the above ravb_open() is in progress it may lead to MAC (or PHY, or MAC-PHY connection, the right point hasn't been identified at the moment) to be broken, thus the Ethernet connectivity fails to restore. The simple fix for this is to move ravb_write(ndev, CCC_OPC_RESET, CCC)) after unregister_netdev() to avoid resetting the controller while the netdev interface is still registered. To avoid future issues in ravb_remove(), the patch follows the proper order of operations in ravb_remove(): reverse order compared with ravb_probe(). This avoids described races as the IOCTLs as well as unregister_netdev() (called now at the beginning of ravb_remove()) calls rtnl_lock() before continuing and IOCTLs check (though devinet_ioctl()) if device is still registered just after taking the lock: int devinet_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr) { // ... rtnl_lock(); ret = -ENODEV; dev = __dev_get_by_name(net, ifr->ifr_name); if (!dev) goto done; // ... done: rtnl_unlock(); out: return ret; } Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Signed-off-by: Claudiu Beznea Reviewed-by: Sergey Shtylyov --- Changes since [1]: - none; this patch is new [1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/ drivers/net/ethernet/renesas/ravb_main.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 805720166ef3..9cad10db59b7 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2894,22 +2894,26 @@ static void ravb_remove(struct platform_device *pdev) struct ravb_private *priv = netdev_priv(ndev); const struct ravb_hw_info *info = priv->info; - /* Stop PTP Clock driver */ - if (info->ccc_gac) - ravb_ptp_stop(ndev); - - clk_disable_unprepare(priv->gptp_clk); - clk_disable_unprepare(priv->refclk); - - /* Set reset mode */ - ravb_write(ndev, CCC_OPC_RESET, CCC); unregister_netdev(ndev); if (info->nc_queues) netif_napi_del(&priv->napi[RAVB_NC]); netif_napi_del(&priv->napi[RAVB_BE]); + ravb_mdio_release(priv); + + /* Stop PTP Clock driver */ + if (info->ccc_gac) + ravb_ptp_stop(ndev); + dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat, priv->desc_bat_dma); + + /* Set reset mode */ + ravb_write(ndev, CCC_OPC_RESET, CCC); + + clk_disable_unprepare(priv->gptp_clk); + clk_disable_unprepare(priv->refclk); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); reset_control_assert(priv->rstc);