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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,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 D2862C47093 for ; Tue, 1 Jun 2021 08:48:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B316B613AF for ; Tue, 1 Jun 2021 08:48:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234023AbhFAIuh (ORCPT ); Tue, 1 Jun 2021 04:50:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233938AbhFAIuU (ORCPT ); Tue, 1 Jun 2021 04:50:20 -0400 Received: from mail-wr1-x433.google.com (mail-wr1-x433.google.com [IPv6:2a00:1450:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD27CC061343 for ; Tue, 1 Jun 2021 01:48:34 -0700 (PDT) Received: by mail-wr1-x433.google.com with SMTP id z8so8259438wrp.12 for ; Tue, 01 Jun 2021 01:48:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=HsyI5GdZuVzBJ4Q40lGtjbheVohc16mnJhwL7iMTmSw=; b=xaimFvKzZB07yjuzlZWyPID+i3O41/kcqJPcS6iQTWYstiOp6aDbYne2LEu5c5Bux7 3X91TH+ey2cmfMXZ8kv0um25JeEv8d8DqKkZfsjA0q4JdTqyq9I6DPvCkw9m4c1tt1tf lPn1qCjbi02nMpYFRTg/itPrKYtWrubWxcg56rL0v7agha79MwcofUh5IEPUhisFoHHi 5UqOQYX3i8u2pq8/W+d/9E1fc17DzamiGADiKsbfUwM7uvp1mIfiiQ5SLqhtevM5f3pl BnMKeRC6P3WWASjB21jSQrIW4tuqsodmzAcONWwCXZj3Zh7rFDkH9hvR5rdJCpUtLySu zguA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=HsyI5GdZuVzBJ4Q40lGtjbheVohc16mnJhwL7iMTmSw=; b=cw/oKvrOo18Vi+s3b7M7RVfzU6w5IIaph8K6NA26rMzVeTzkGHEAGmCxImsg+nbXUl +QL9btnYiE12o+mHFCmSj9yGlN5sYcfMG7arAMnzL79UasCqcFahi79Y8pwaO5nHyydV TZtlZND38oWIv3OigFIud+sYXNferkq8MeelVoQdqr59I33yma9Tk2Lz52npRt8R4jBr g8nzO4gyxUrxM146YaK1dM0HEUh9H7VjD0OYsItNaEX2FvS5oSup3OsVxtuh7mKUTQv+ Zoe7MVvvkeNVpS+vjkNJ2fwHNsL89nUmRz3gvXu2rIaoyjVEtfaIAjq5rZoISsJvBRdj cZJQ== X-Gm-Message-State: AOAM532DkExv/Qbi7qYTO0pI3Q7VmfraTjRe7O4uz2lYNPKXulRCRzUL SVu2kaSucMvztqPujAABLXG6Tg== X-Google-Smtp-Source: ABdhPJwicPfpiz9Ps9bnHfK5U9UhZq6pV1e3HJK+KjRppnJs8C7vVjbqoq40pD23inszRKpnR1omzw== X-Received: by 2002:a5d:4c49:: with SMTP id n9mr26124117wrt.417.1622537313482; Tue, 01 Jun 2021 01:48:33 -0700 (PDT) Received: from localhost.localdomain ([2a01:e0a:90c:e290:a3a:d001:6a80:207a]) by smtp.gmail.com with ESMTPSA id t14sm1710470wmq.16.2021.06.01.01.48.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Jun 2021 01:48:33 -0700 (PDT) From: Neil Armstrong To: balbi@kernel.org Cc: linux-usb@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong Subject: [PATCH] usb: dwc3-meson-g12a: fix usb2 PHY glue init when phy0 is disabled Date: Tue, 1 Jun 2021 10:48:30 +0200 Message-Id: <20210601084830.260196-1-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1816; h=from:subject; bh=Qf752RJbSHGdE83hMRrW4mM1Uj4TitFrYwm+jlRhNvY=; b=owEBbQKS/ZANAwAKAXfc29rIyEnRAcsmYgBgtfRG0QSALHdUEWJSyZF78sJxWZurbP2ZCdFuehVl tryIs/6JAjMEAAEKAB0WIQQ9U8YmyFYF/h30LIt33NvayMhJ0QUCYLX0RgAKCRB33NvayMhJ0ediEA DAEklNiHPCq29uk/iUjjt18PU0FxsriKAlJsf0WAkT4X8QAiBmOmFWHhG52Ugh1DIAar9YxggiaLVp nxIoiNOEcUG0n8PYca4XoMrrT/K9Qg6gyuEvdtdf5im26Z/pZzMpSQdaG+yzXlOdzA4vRxVv531vZb HE2G7Y5C3/G4eVYIXeN25A61PxbEp0XQLJgrIbZQrsa2x34Da0So46A1PBZ+/KG9xyi+lYk/uo8Ol9 +1CoMKDwOJr36+PL2pDgXEG8bPMqbJdOEcuMXihqH9ZOdSSaRqiX/Xcll0063Hgzp0sSid7J1Eux8W gZ3Y2egjh3e1b2q3dPU9JHrDyAMTCKtqzlwTzs2g3TZE+XT5deZ5THiOyZ8T/Ix2y4L1P71LeSuJNS T4MsZIp+MZueAd8D6CzH/rQZ5ogCFHdde8gA1ukOF2ow/Ji4P6fzzTSi6BbnreT1fv/ZGxJdIuPqe5 3ChDtsFjVHfhBHOC8R4mOiLV+r7lriC2CdtjSesNqpyy4AhHLqFgJF0tUweDK4axJuKblZdeSKYLW9 cN/48ySEMgJKSp7eHV6wLlIwsWhj79IUbfaBAcb5TQHwh/w9XfRLHGeXrqljzkz1KcOYFK8hEMMTqP GeqUnb0elGu5F1Qkh3MHos8Bfr7d5LhnJNGf48gOJpL5I8+HP1qXf2LUG4lg== X-Developer-Key: i=narmstrong@baylibre.com; a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org When only PHY1 is used (for example on Odroid-HC4), the regmap init code uses the usb2 ports when doesn't initialize the PHY1 regmap entry. This fixes: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 ... pc : regmap_update_bits_base+0x40/0xa0 lr : dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8 ... Call trace: regmap_update_bits_base+0x40/0xa0 dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8 dwc3_meson_g12a_usb2_init+0x7c/0xc8 dwc3_meson_g12a_usb_init+0x28/0x48 dwc3_meson_g12a_probe+0x298/0x540 platform_probe+0x70/0xe0 really_probe+0xf0/0x4d8 driver_probe_device+0xfc/0x168 ... Fixes: 013af227f58a97 ("usb: dwc3: meson-g12a: handle the phy and glue registers separately") Signed-off-by: Neil Armstrong --- drivers/usb/dwc3/dwc3-meson-g12a.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index bdf1f98dfad8..9c944bc6d555 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -651,7 +651,7 @@ static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, return PTR_ERR(priv->usb_glue_regmap); /* Create a regmap for each USB2 PHY control register set */ - for (i = 0; i < priv->usb2_ports; i++) { + for (i = 0; i < priv->drvdata->num_phys; i++) { struct regmap_config u2p_regmap_config = { .reg_bits = 8, .val_bits = 32, @@ -659,6 +659,9 @@ static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, .max_register = U2P_R1, }; + if (!strstr(priv->drvdata->phy_names[i], "usb2")) + continue; + u2p_regmap_config.name = devm_kasprintf(priv->dev, GFP_KERNEL, "u2p-%d", i); if (!u2p_regmap_config.name) -- 2.25.1