Received: by 2002:a05:6a10:f3d0:0:0:0:0 with SMTP id a16csp2561473pxv; Sun, 27 Jun 2021 01:55:16 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy13+gaC7ZUyIVe42iejvkHXVzZY2TwuRoR9Ve5zRebNkw/d1REh/Qw1MnOJ5cahUbjrI7p X-Received: by 2002:a50:ff09:: with SMTP id a9mr1510298edu.368.1624784115932; Sun, 27 Jun 2021 01:55:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1624784115; cv=none; d=google.com; s=arc-20160816; b=j0O8ZUVeXMjWqzYNpd6PX6Xp+4eVlhTOAjDDQQdAxLCKdFjHvL3bFZ/mZ+QiMc86nL X69mjuOI+H4RDOdJ7C3/3XHdqnRNwGwirwASUEnFz7dFo9/t4zzfJhKb+Sf12wt9BEr3 kAnmKx7guQEJ2iaa8Tdqyszdtxh2mpNKagpiglVn50m8CkTMdS+tLIb1wEqReNA5Ykja DzbP9pXsBDCPueoUrfUkro2yuloen5SvBiC0xxyQHbOFQbKEL9dpgOpPkiGsbRY2Uu7X FvbtrxFmDtA3vDh4MgAXzCAckOUTLJG/aYVNiwzHU33nOfOeICMgDaI62nLqUx9TqLrE FOOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=XBp1/MrNNwNEDstgxjuADVEHCm5pZt/fgGmDIGZ84Qk=; b=MBvaQUNUfZdA6XPVA4wbOy8U76ZwIfgzTaviZm018J982n/f3brnOQ8ztVwidjiW5V WRNAxMQEhePLP06r3SLm8VaO08wb80JKy7G92FClC+ZpBABowG4sA+7AL4UoC/QZA2IP 7KEZ0RCaqJ886EffZ28wS+fxLm00prPJsTJ3Ypbk9y4yjEoFfTzp2QZldqxULZnazZIH 9NliA6DPWJvBr552GisqveXO1E4rSixsQZSl2hnutidoYo28hgd1MmCMCIfI9K4FWf4I JT/yIzUIL1TVwX1Q4GKPlY3g/4lHrWgx1V5G2eICQ61Mvueclc6KHfiYtU/+JELNDHUM nBjw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id 23si11837572ejg.6.2021.06.27.01.54.52; Sun, 27 Jun 2021 01:55:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230119AbhF0IuP (ORCPT + 99 others); Sun, 27 Jun 2021 04:50:15 -0400 Received: from lucky1.263xmail.com ([211.157.147.134]:42328 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbhF0IuO (ORCPT ); Sun, 27 Jun 2021 04:50:14 -0400 Received: from localhost (unknown [192.168.167.16]) by lucky1.263xmail.com (Postfix) with ESMTP id 0A31ACF056; Sun, 27 Jun 2021 16:47:45 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P12363T139708910794496S1624783659924687_; Sun, 27 Jun 2021 16:47:46 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <456593cc75213b8b0db436fb9310d05b> X-RL-SENDER: andy.yan@rock-chips.com X-SENDER: yxj@rock-chips.com X-LOGIN-NAME: andy.yan@rock-chips.com X-FST-TO: hjc@rock-chips.com X-RCPT-COUNT: 7 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Andy Yan To: hjc@rock-chips.com, heiko@sntech.de, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andy Yan Subject: [PATCH] drm/rockchip: Check iommu itself instead of it's parent for device_is_available Date: Sun, 27 Jun 2021 16:47:37 +0800 Message-Id: <20210627084737.309163-1-andy.yan@rock-chips.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When iommu itself is disabled in dts, we should fallback to non-iommu buffer, check iommu parent is meanless here. Signed-off-by: Andy Yan --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 212bd87c0c4a..0d20c8cc1ffa 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -366,7 +366,7 @@ static int rockchip_drm_platform_of_probe(struct device *dev) } iommu = of_parse_phandle(port->parent, "iommus", 0); - if (!iommu || !of_device_is_available(iommu->parent)) { + if (!iommu || !of_device_is_available(iommu)) { DRM_DEV_DEBUG(dev, "no iommu attached for %pOF, using non-iommu buffers\n", port->parent); -- 2.25.1