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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D0ACC433F5 for ; Fri, 5 Nov 2021 18:39:33 +0000 (UTC) Received: by mail.kernel.org (Postfix) id 6203961220; Fri, 5 Nov 2021 18:39:33 +0000 (UTC) Received: from mail-oi1-f175.google.com (mail-oi1-f175.google.com [209.85.167.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 26783611AE; Fri, 5 Nov 2021 18:39:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 26783611AE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-oi1-f175.google.com with SMTP id g125so15871736oif.9; Fri, 05 Nov 2021 11:39:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=Y+2tTqVNPtgyU8gy8heL1eqRjjKPw+inr348G0Hpczo=; b=S0lSAYc/kzkkUP2ul5Ud8tbotSoYq6yL/PAisZptx0RRr//juLH3yuR5LtnpNPGWAw /cB8rWbqzSyo1Dt+ZBjF3h+I1gGWVgaCZHrba4TI1f31K8wXmruAXsr5T3xtfuwmlmpq zdZdkNDUcOX8Q8I9HwgQ4uvse1XVt4pQkFQGeqDLhCNh5XDujsUS71YOenkI8+kE1rhT dHUsYC81ggNrQ0w78M6Eac40/keNMEQ8a7wQZp7B/M5zx39rYYmasXcuPV24XJANQbty fZxOxRsgPwZzPiR2e1MDBW/zsqe93w/nIns18biddVpnlAr0gnxzEe7wNVG6ONGhBQnK s1xQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=Y+2tTqVNPtgyU8gy8heL1eqRjjKPw+inr348G0Hpczo=; b=x3+ZB5XIaWelVwdg1nw16DPBv86+ephywE9AKgmp8VzcT3eh2VB5ZssVDIkhziBUJU uZg3pqE9xkAuG6t3icVNdXsFHk8WHsKEu02ezK5g60RwcxisdoBok1i1S3cCz9fvt8wB 3WKO7X14XwsWsaPkXvmO0LPanAjuwTMe5bmw0vajZf/KqfToSqWu9tqaBrfRvcKfTrtK VYPAOlsB23hx+AMF9zFHWIqXUs3vqwi+zwWWlrS2FiIoryBERKaZz2IpijbeCUt2/gSU DhRpaJ96/dfLyzr+s7K0gdQWv258EY3PrTFql/hS44h7iNqfCm4wT4JxrOhs44uo78Nf ECtQ== X-Gm-Message-State: AOAM532PVWmyX7txIQIqwgdn+DoCjIw0EVhc3aoqbRCzdRq8lPdfVqBZ DWZIi9i2ZLKebMQdsX4aWMRnlh51mfs= X-Google-Smtp-Source: ABdhPJw5GlTufvi//BkpX8W/5ghRqnc7l9Ojq1MFC/x9hhHIZTw+JZ6pBphqnNQwGASC6sbDXtyGPQ== X-Received: by 2002:aca:ad49:: with SMTP id w70mr20785602oie.19.1636137572374; Fri, 05 Nov 2021 11:39:32 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id u7sm2973063oiu.41.2021.11.05.11.39.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Nov 2021 11:39:31 -0700 (PDT) Sender: Guenter Roeck Date: Fri, 5 Nov 2021 11:39:30 -0700 From: Guenter Roeck To: Linus Walleij List-Id: Cc: arm@kernel.org, soc@kernel.org, linux-arm-kernel@lists.infradead.org, Rob Herring , Liviu Dudau , Sudeep Holla , Lorenzo Pieralisi Subject: Re: [PATCH] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names Message-ID: <20211105183930.GA1448386@roeck-us.net> References: <20211024232003.211484-1-linus.walleij@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211024232003.211484-1-linus.walleij@linaro.org> Hi, On Mon, Oct 25, 2021 at 01:20:03AM +0200, Linus Walleij wrote: > From: Rob Herring > > Add a 'reg' entry for register-bit-led nodes on the Arm Ltd platforms. > The 'reg' entry is the LED control register address. With this, the node > name can be updated to use a generic node name, 'led', and a > unit-address. > > Cc: Linus Walleij > Cc: Liviu Dudau > Cc: Sudeep Holla > Cc: Lorenzo Pieralisi > Cc: linux-arm-kernel@lists.infradead.org > Signed-off-by: Rob Herring > Signed-off-by: Linus Walleij > --- > SoC folks: please apply this directly for v5.16. This patch results in widespread sysfs backtraces with various qemu arm emulations (versatilepb, versatileab, realview-pb-a8, realview-pbx-a9, realview-eb, realview-eb-mpcore, integratorcp, mps2-an385). Example log: sysfs: cannot create duplicate filename '/devices/platform/10000000.core-module/10000008.led' CPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0+ #1 Hardware name: ARM-Versatile (Device Tree Support) [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (sysfs_warn_dup+0x50/0x64) [] (sysfs_warn_dup) from [] (sysfs_create_dir_ns+0xdc/0xfc) [] (sysfs_create_dir_ns) from [] (kobject_add_internal+0xb0/0x2f8) [] (kobject_add_internal) from [] (kobject_add+0x58/0xc8) [] (kobject_add) from [] (device_add+0xf0/0x8ac) [] (device_add) from [] (of_platform_device_create_pdata+0xa4/0xfc) [] (of_platform_device_create_pdata) from [] (of_platform_bus_create+0x1a0/0x3d8) [] (of_platform_bus_create) from [] (of_platform_bus_create+0x1ec/0x3d8) [] (of_platform_bus_create) from [] (of_platform_populate+0x68/0xd8) [] (of_platform_populate) from [] (customize_machine+0x1c/0x30) [] (customize_machine) from [] (do_one_initcall+0x88/0x2f8) [] (do_one_initcall) from [] (kernel_init_freeable+0x194/0x224) [] (kernel_init_freeable) from [] (kernel_init+0x10/0x100) [] (kernel_init) from [] (ret_from_fork+0x14/0x3c) Exception stack(0xc1495fb0 to 0xc1495ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 kobject_add_internal failed for 10000008.led with -EEXIST, don't try to register things with the same name in the same directory. Bisect log is attached. Guenter --- # bad: [b8c4a6bfae4eef0d0f143516b262ccacfdb0365a] dt-bindings: watchdog: convert Broadcom's WDT to the json-schema # good: [8bb7eca972ad531c9b149c0a51ab43a417385813] Linux 5.15 git bisect start 'HEAD' 'v5.15' # good: [c0d6586afa3546a3d148cf4b9d9a407b4f79d0bb] Merge tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm git bisect good c0d6586afa3546a3d148cf4b9d9a407b4f79d0bb # good: [2219b0ceefe835b92a8a74a73fe964aa052742a2] Merge tag 'soc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc git bisect good 2219b0ceefe835b92a8a74a73fe964aa052742a2 # bad: [048ff8629e117d8411a787559417c781bcd78d7e] Merge tag 'usb-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb git bisect bad 048ff8629e117d8411a787559417c781bcd78d7e # bad: [f253fb365e1ab89b45db8adef7648c21d7bfd89c] Merge tag 'samsung-dt64-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/dt git bisect bad f253fb365e1ab89b45db8adef7648c21d7bfd89c # good: [c7613530d1ed3534168c219e6e6069f91e771b00] Merge tag 'qcom-arm64-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/dt git bisect good c7613530d1ed3534168c219e6e6069f91e771b00 # good: [8bd8822c83785ae669a23080d1638b0a534203b1] Merge tag 'imx-dt-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/dt git bisect good 8bd8822c83785ae669a23080d1638b0a534203b1 # good: [804565cd9994d4be167d0c42062618ef2065caa8] Merge tag 'ixp4xx-dts-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into arm/dt git bisect good 804565cd9994d4be167d0c42062618ef2065caa8 # good: [9f2feb32c2b6a39fdf8c872486341ffa84b2eff5] Merge tag 'omap-for-v5.16/gpmc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/dt git bisect good 9f2feb32c2b6a39fdf8c872486341ffa84b2eff5 # good: [f9241fe8b9652e6751f4ae684efe0148e3c157c7] ARM: dts: aspeed: Add uart routing to device tree git bisect good f9241fe8b9652e6751f4ae684efe0148e3c157c7 # bad: [2ec492731a1ff651d89c909ccce01fd69346d1f0] Merge tag 'at91-dt-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/dt git bisect bad 2ec492731a1ff651d89c909ccce01fd69346d1f0 # bad: [25b892b583ccf0ce5ac1469d27708f5340147f52] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names git bisect bad 25b892b583ccf0ce5ac1469d27708f5340147f52 # good: [8f0450c51148d28443a1026c9510a6edf932c6eb] dts: socfpga: Add Mercury+ AA1 devicetree git bisect good 8f0450c51148d28443a1026c9510a6edf932c6eb # good: [eb425d57a8b69acadc273e23aaf1bdfded814390] Merge tag 'aspeed-5.16-devicetree-2' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/bmc into arm/dt git bisect good eb425d57a8b69acadc273e23aaf1bdfded814390 # first bad commit: [25b892b583ccf0ce5ac1469d27708f5340147f52] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0F4AC433EF for ; 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Fri, 05 Nov 2021 11:39:32 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id u7sm2973063oiu.41.2021.11.05.11.39.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Nov 2021 11:39:31 -0700 (PDT) Date: Fri, 5 Nov 2021 11:39:30 -0700 From: Guenter Roeck To: Linus Walleij List-Id: Cc: arm@kernel.org, soc@kernel.org, linux-arm-kernel@lists.infradead.org, Rob Herring , Liviu Dudau , Sudeep Holla , Lorenzo Pieralisi Subject: Re: [PATCH] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names Message-ID: <20211105183930.GA1448386@roeck-us.net> References: <20211024232003.211484-1-linus.walleij@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20211024232003.211484-1-linus.walleij@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211105_113933_214379_1B4F42D5 X-CRM114-Status: GOOD ( 15.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Message-ID: <20211105183930.xgdGBdLCv5eeSMdWUxB1T_-UIoGfKRZjA2O04daD1D0@z> Hi, On Mon, Oct 25, 2021 at 01:20:03AM +0200, Linus Walleij wrote: > From: Rob Herring > > Add a 'reg' entry for register-bit-led nodes on the Arm Ltd platforms. > The 'reg' entry is the LED control register address. With this, the node > name can be updated to use a generic node name, 'led', and a > unit-address. > > Cc: Linus Walleij > Cc: Liviu Dudau > Cc: Sudeep Holla > Cc: Lorenzo Pieralisi > Cc: linux-arm-kernel@lists.infradead.org > Signed-off-by: Rob Herring > Signed-off-by: Linus Walleij > --- > SoC folks: please apply this directly for v5.16. This patch results in widespread sysfs backtraces with various qemu arm emulations (versatilepb, versatileab, realview-pb-a8, realview-pbx-a9, realview-eb, realview-eb-mpcore, integratorcp, mps2-an385). Example log: sysfs: cannot create duplicate filename '/devices/platform/10000000.core-module/10000008.led' CPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0+ #1 Hardware name: ARM-Versatile (Device Tree Support) [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (sysfs_warn_dup+0x50/0x64) [] (sysfs_warn_dup) from [] (sysfs_create_dir_ns+0xdc/0xfc) [] (sysfs_create_dir_ns) from [] (kobject_add_internal+0xb0/0x2f8) [] (kobject_add_internal) from [] (kobject_add+0x58/0xc8) [] (kobject_add) from [] (device_add+0xf0/0x8ac) [] (device_add) from [] (of_platform_device_create_pdata+0xa4/0xfc) [] (of_platform_device_create_pdata) from [] (of_platform_bus_create+0x1a0/0x3d8) [] (of_platform_bus_create) from [] (of_platform_bus_create+0x1ec/0x3d8) [] (of_platform_bus_create) from [] (of_platform_populate+0x68/0xd8) [] (of_platform_populate) from [] (customize_machine+0x1c/0x30) [] (customize_machine) from [] (do_one_initcall+0x88/0x2f8) [] (do_one_initcall) from [] (kernel_init_freeable+0x194/0x224) [] (kernel_init_freeable) from [] (kernel_init+0x10/0x100) [] (kernel_init) from [] (ret_from_fork+0x14/0x3c) Exception stack(0xc1495fb0 to 0xc1495ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 kobject_add_internal failed for 10000008.led with -EEXIST, don't try to register things with the same name in the same directory. Bisect log is attached. Guenter --- # bad: [b8c4a6bfae4eef0d0f143516b262ccacfdb0365a] dt-bindings: watchdog: convert Broadcom's WDT to the json-schema # good: [8bb7eca972ad531c9b149c0a51ab43a417385813] Linux 5.15 git bisect start 'HEAD' 'v5.15' # good: [c0d6586afa3546a3d148cf4b9d9a407b4f79d0bb] Merge tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm git bisect good c0d6586afa3546a3d148cf4b9d9a407b4f79d0bb # good: [2219b0ceefe835b92a8a74a73fe964aa052742a2] Merge tag 'soc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc git bisect good 2219b0ceefe835b92a8a74a73fe964aa052742a2 # bad: [048ff8629e117d8411a787559417c781bcd78d7e] Merge tag 'usb-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb git bisect bad 048ff8629e117d8411a787559417c781bcd78d7e # bad: [f253fb365e1ab89b45db8adef7648c21d7bfd89c] Merge tag 'samsung-dt64-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/dt git bisect bad f253fb365e1ab89b45db8adef7648c21d7bfd89c # good: [c7613530d1ed3534168c219e6e6069f91e771b00] Merge tag 'qcom-arm64-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/dt git bisect good c7613530d1ed3534168c219e6e6069f91e771b00 # good: [8bd8822c83785ae669a23080d1638b0a534203b1] Merge tag 'imx-dt-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/dt git bisect good 8bd8822c83785ae669a23080d1638b0a534203b1 # good: [804565cd9994d4be167d0c42062618ef2065caa8] Merge tag 'ixp4xx-dts-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into arm/dt git bisect good 804565cd9994d4be167d0c42062618ef2065caa8 # good: [9f2feb32c2b6a39fdf8c872486341ffa84b2eff5] Merge tag 'omap-for-v5.16/gpmc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/dt git bisect good 9f2feb32c2b6a39fdf8c872486341ffa84b2eff5 # good: [f9241fe8b9652e6751f4ae684efe0148e3c157c7] ARM: dts: aspeed: Add uart routing to device tree git bisect good f9241fe8b9652e6751f4ae684efe0148e3c157c7 # bad: [2ec492731a1ff651d89c909ccce01fd69346d1f0] Merge tag 'at91-dt-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/dt git bisect bad 2ec492731a1ff651d89c909ccce01fd69346d1f0 # bad: [25b892b583ccf0ce5ac1469d27708f5340147f52] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names git bisect bad 25b892b583ccf0ce5ac1469d27708f5340147f52 # good: [8f0450c51148d28443a1026c9510a6edf932c6eb] dts: socfpga: Add Mercury+ AA1 devicetree git bisect good 8f0450c51148d28443a1026c9510a6edf932c6eb # good: [eb425d57a8b69acadc273e23aaf1bdfded814390] Merge tag 'aspeed-5.16-devicetree-2' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/bmc into arm/dt git bisect good eb425d57a8b69acadc273e23aaf1bdfded814390 # first bad commit: [25b892b583ccf0ce5ac1469d27708f5340147f52] ARM: dts: arm: Update register-bit-led nodes 'reg' and node names _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel