From patchwork Thu May 28 11:04:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 11575623 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3CE5214F6 for ; Thu, 28 May 2020 11:09:31 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 146582088E for ; Thu, 28 May 2020 11:09:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UNJui1lC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 146582088E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:49704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jeGPi-0007HN-7S for patchwork-qemu-devel@patchwork.kernel.org; Thu, 28 May 2020 07:09:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49852) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jeGLM-0005qJ-5m for qemu-devel@nongnu.org; Thu, 28 May 2020 07:05:01 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:54416 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jeGLF-0006j3-BC for qemu-devel@nongnu.org; Thu, 28 May 2020 07:04:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1590663892; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OK+DIJ+nBK50yEZJWn7zCUr/RDhXkLTJsn2cPyz+Rw0=; b=UNJui1lCh13kDqqaUOyxxTZZzZbGWZWHV7BRd5CUOT4Qh35tU/Tmqm1feY16xPz59EENyw R7EVBI6y/Od4plsFPwsJ/a2Y6/zCvAazLdT2W3jZqn/ajPqPpgkeV58mZy4PhZX50Aa1Ju J3PYhrKa/U61DpoKf/jKyuqBH/NsMfw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-301-JPcN9XU3MkqlxQPohX-tkA-1; Thu, 28 May 2020 07:04:51 -0400 X-MC-Unique: JPcN9XU3MkqlxQPohX-tkA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 61249150D; Thu, 28 May 2020 11:04:49 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-32.ams2.redhat.com [10.36.112.32]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2D2C5579A5; Thu, 28 May 2020 11:04:49 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1771C11358D0; Thu, 28 May 2020 13:04:45 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v2 18/24] display/sm501 display/ati: Fix to realize "i2c-ddc" Date: Thu, 28 May 2020 13:04:38 +0200 Message-Id: <20200528110444.20456-19-armbru@redhat.com> In-Reply-To: <20200528110444.20456-1-armbru@redhat.com> References: <20200528110444.20456-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/28 03:11:04 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: berrange@redhat.com, ehabkost@redhat.com, Magnus Damm , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aleksandar Markovic , qemu-ppc@nongnu.org, pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" sm501_init() and ati_vga_realize() create an "i2c-ddc" device, but neglect to realize it. Affects machines sam460ex, shix, r2d, and fulong2e. In theory, a device becomes real only on realize. In practice, the transition from unreal to real is a fuzzy one. The work to make a device real can be spread between realize methods (fine), instance_init methods (wrong), and board code wiring up the device (fine as long as it effectively happens on realize). Depending on what exactly is done where, a device can work even when we neglect to realize it. This one appears to work. Nevertheless, it's a clear misuse of the interface. Even when it works today (more or less by chance), it can break tomorrow. Fix by realizing it right away. Visible in "info qom-tree"; here's the change for sam460ex: /machine (sam460ex-machine) [...] /unattached (container) [...] - /device[14] (sii3112) + /device[14] (i2c-ddc) + /device[15] (sii3112) [rest of device[*] renumbered...] Fixes: 4a1f253adb45ac6019971193d5077c4d5d55886a Fixes: c82c7336de58876862e6b4dccbda29e9240fd388 Cc: BALATON Zoltan Cc: qemu-ppc@nongnu.org Cc: Magnus Damm Cc: Philippe Mathieu-Daudé Cc: Aleksandar Markovic Signed-off-by: Markus Armbruster Tested-by: BALATON Zoltan Reviewed-by: Philippe Mathieu-Daudé --- hw/display/ati.c | 2 ++ hw/display/sm501.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/hw/display/ati.c b/hw/display/ati.c index 065f197678..5c71e5f295 100644 --- a/hw/display/ati.c +++ b/hw/display/ati.c @@ -929,6 +929,8 @@ static void ati_vga_realize(PCIDevice *dev, Error **errp) bitbang_i2c_init(&s->bbi2c, i2cbus); I2CSlave *i2cddc = I2C_SLAVE(qdev_create(BUS(i2cbus), TYPE_I2CDDC)); i2c_set_slave_address(i2cddc, 0x50); + object_property_set_bool(OBJECT(i2cddc), true, "realized", + &error_abort); /* mmio register space */ memory_region_init_io(&s->mm, OBJECT(s), &ati_mm_ops, s, diff --git a/hw/display/sm501.c b/hw/display/sm501.c index acc692531a..fbedc56715 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -1816,6 +1816,8 @@ static void sm501_init(SM501State *s, DeviceState *dev, /* ddc */ I2CDDCState *ddc = I2CDDC(qdev_create(BUS(s->i2c_bus), TYPE_I2CDDC)); i2c_set_slave_address(I2C_SLAVE(ddc), 0x50); + object_property_set_bool(OBJECT(ddc), true, "realized", + &error_abort); /* mmio */ memory_region_init(&s->mmio_region, OBJECT(dev), "sm501.mmio", MMIO_SIZE);