From patchwork Tue Oct 16 02:37:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Rowand X-Patchwork-Id: 984513 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 42Z0fP6PVxz9sCT for ; Tue, 16 Oct 2018 14:09:49 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="MMXCyx5M"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42Z0fP4qdpzF2X3 for ; Tue, 16 Oct 2018 14:09:49 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="MMXCyx5M"; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::543; helo=mail-pg1-x543.google.com; envelope-from=frowand.list@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="MMXCyx5M"; dkim-atps=neutral Received: from mail-pg1-x543.google.com (mail-pg1-x543.google.com [IPv6:2607:f8b0:4864:20::543]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42YzzL4XgHzF3Wj for ; Tue, 16 Oct 2018 13:39:26 +1100 (AEDT) Received: by mail-pg1-x543.google.com with SMTP id i4-v6so10069540pgq.9 for ; Mon, 15 Oct 2018 19:39:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1eIq+bpAJjW92EtiaqYATBx5CfeVYNbB6/35CF3TsEg=; b=MMXCyx5MOpk3tTtohq2TNbmnZ6+COnYfpVIPbLJKeruVi0HnjEGfAU9xSUQKWwjG17 HchDNMJhcV8Rvm+ITZdTDZDNbl+sbzurwnN+XRrqygSQskIc1n8/7e0VoSTQdAKDP8vP NDpum6aBLHer0xcp3RvYJXqr3MWxq7yAr4kOULKWgf4PQHNfDUUlGr2IN2hoo3tyqfJ6 5p5xbuVU8jm0JRvqvscaYx0vnhwWLRq8+QhDupF6V/l0mpBTF9+rcPW9g0YSDt5gJFow WCT5xOrzUGOPYLOQbXZJviWv6mpQIQj6Dhf/67WjWw8tIUdU5gGFLS2W0r5LvYCjLW7y FOBw== 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:in-reply-to :references; bh=1eIq+bpAJjW92EtiaqYATBx5CfeVYNbB6/35CF3TsEg=; b=YRt01S+OK0mntT3tfW2HcCdJTM3ZmzgQAv3SlOTtFMuy9bnbRJ8vIoS+AKxL7kF1C2 frNU4LPpKqKQN4vqVzs78nHTeGPPy4B70EhPRfS5HrZhAdoJCHuGHiC1tmkCznNf6QrH 0bhHyPAg+ZkcLm/iEpBWhJTfReyzSEL2R5APAPXXQMICJtA+FhQfF3skeLzCSFqi75f3 cqJjpBovEzY9hs0axiqwToJvg6MsvEFt5+YXHU5A6pt7RPJCmHiFBQAfFiwuTR2NUmID +GcBAeStjm7zb9L1vYH5Jvzjmd8fP/5PJRVt4nxNCAsmnr6UIwBZdhBxNz3e+8JXwVjL SCUA== X-Gm-Message-State: ABuFfoiIj04rvaQwFbM1Ebzrx+PmSHfVBJGjx4VoVBdG036FoajCdqgg CCbvN+/u+O/dlo2EEyeZg0A= X-Google-Smtp-Source: ACcGV62B6/wbMmS5wkpicwago7Rr2P4eb4qfD07HNPiCO81ezeOIVTIZ2Ps+6h6OBhMbPfHZR9nRIw== X-Received: by 2002:a62:be1a:: with SMTP id l26-v6mr20630475pff.204.1539657565041; Mon, 15 Oct 2018 19:39:25 -0700 (PDT) Received: from localhost.localdomain (c-24-6-192-50.hsd1.ca.comcast.net. [24.6.192.50]) by smtp.gmail.com with ESMTPSA id u79-v6sm18620287pfd.117.2018.10.15.19.39.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 15 Oct 2018 19:39:24 -0700 (PDT) From: frowand.list@gmail.com To: Rob Herring , Pantelis Antoniou , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Alan Tull , Moritz Fischer Subject: [PATCH v4 11/18] of: overlay: test case of two fragments adding same node Date: Mon, 15 Oct 2018 19:37:31 -0700 Message-Id: <1539657458-24401-12-git-send-email-frowand.list@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1539657458-24401-1-git-send-email-frowand.list@gmail.com> References: <1539657458-24401-1-git-send-email-frowand.list@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Frank Rowand Multiple overlay fragments adding or deleting the same node is not supported. An attempt to do so results in an incorrect devicetree. The node name will be munged for the second add. After adding this patch, the unittest messages will show: Duplicate name in motor-1, renamed to "controller#1" OF: overlay: of_overlay_apply() err=0 ### dt-test ### of_overlay_fdt_apply() expected -22, ret=0, overlay_bad_add_dup_node ### dt-test ### FAIL of_unittest_overlay_high_level():2419 Adding overlay 'overlay_bad_add_dup_node' failed ... ### dt-test ### end of unittest - 210 passed, 1 failed The incorrect (munged) node name "controller#1" can be seen in the /proc filesystem: $ pwd /proc/device-tree/testcase-data-2/substation@100/motor-1 $ ls compatible controller controller#1 name phandle spin $ ls controller power_bus $ ls controller#1 power_bus_emergency Signed-off-by: Frank Rowand --- drivers/of/unittest-data/Makefile | 1 + .../of/unittest-data/overlay_bad_add_dup_node.dts | 28 ++++++++++++++++++++++ drivers/of/unittest.c | 5 ++++ 3 files changed, 34 insertions(+) create mode 100644 drivers/of/unittest-data/overlay_bad_add_dup_node.dts diff --git a/drivers/of/unittest-data/Makefile b/drivers/of/unittest-data/Makefile index 013d85e694c6..166dbdbfd1c5 100644 --- a/drivers/of/unittest-data/Makefile +++ b/drivers/of/unittest-data/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_OF_OVERLAY) += overlay.dtb.o \ overlay_12.dtb.o \ overlay_13.dtb.o \ overlay_15.dtb.o \ + overlay_bad_add_dup_node.dtb.o \ overlay_bad_phandle.dtb.o \ overlay_bad_symbol.dtb.o \ overlay_base.dtb.o diff --git a/drivers/of/unittest-data/overlay_bad_add_dup_node.dts b/drivers/of/unittest-data/overlay_bad_add_dup_node.dts new file mode 100644 index 000000000000..145dfc3b1024 --- /dev/null +++ b/drivers/of/unittest-data/overlay_bad_add_dup_node.dts @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0 +/dts-v1/; +/plugin/; + +/* + * &electric_1/motor-1 and &spin_ctrl_1 are the same node: + * /testcase-data-2/substation@100/motor-1 + * + * Thus the new node "controller" in each fragment will + * result in an attempt to add the same node twice. + * This will result in an error and the overlay apply + * will fail. + */ + +&electric_1 { + + motor-1 { + controller { + power_bus = < 0x1 0x2 >; + }; + }; +}; + +&spin_ctrl_1 { + controller { + power_bus_emergency = < 0x101 0x102 >; + }; +}; diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 722537e14848..471b8eb6e842 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -2147,6 +2147,7 @@ struct overlay_info { OVERLAY_INFO_EXTERN(overlay_12); OVERLAY_INFO_EXTERN(overlay_13); OVERLAY_INFO_EXTERN(overlay_15); +OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node); OVERLAY_INFO_EXTERN(overlay_bad_phandle); OVERLAY_INFO_EXTERN(overlay_bad_symbol); @@ -2169,6 +2170,7 @@ struct overlay_info { OVERLAY_INFO(overlay_12, 0), OVERLAY_INFO(overlay_13, 0), OVERLAY_INFO(overlay_15, 0), + OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL), OVERLAY_INFO(overlay_bad_phandle, -EINVAL), OVERLAY_INFO(overlay_bad_symbol, -EINVAL), {} @@ -2413,6 +2415,9 @@ static __init void of_unittest_overlay_high_level(void) unittest(overlay_data_apply("overlay", NULL), "Adding overlay 'overlay' failed\n"); + unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL), + "Adding overlay 'overlay_bad_add_dup_node' failed\n"); + unittest(overlay_data_apply("overlay_bad_phandle", NULL), "Adding overlay 'overlay_bad_phandle' failed\n");