From: Frank Wunderlich <frank-w@public-files.de>
To: Yong Wu <yong.wu@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
David Airlie <airlied@linux.ie>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Evan Green <evgreen@chromium.org>,
Robin Murphy <robin.murphy@arm.com>,
Tomasz Figa <tfiga@chromium.org>,
Will Deacon <will.deacon@arm.com>,
linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, youlin.pei@mediatek.com,
Nicolas Boichat <drinkcat@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
anan.sun@mediatek.com, ming-fan.chen@mediatek.com,
yi.kuo@mediatek.com, acourbot@chromium.org,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
Daniel Vetter <daniel@ffwll.ch>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Xia Jiang <xia.jiang@mediatek.com>,
Tiffany Lin <tiffany.lin@mediatek.com>,
Dafna Hirschfeld <dafna.hirschfeld@collabora.com>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Eizan Miyamoto <eizan@chromium.org>,
anthony.huang@mediatek.com
Subject: Aw: Re: [PATCH v6 00/11] Clean up "mediatek,larb"
Date: Wed, 14 Jul 2021 13:23:31 +0200 [thread overview]
Message-ID: <trinity-345a7606-49c0-417a-b40a-5ff156332354-1626261811356@3c-app-gmx-bs01> (raw)
In-Reply-To: <1626261496.14352.16.camel@mhfsdcap03>
> Gesendet: Mittwoch, 14. Juli 2021 um 13:18 Uhr
> Von: "Yong Wu" <yong.wu@mediatek.com>
> Hi Frank,
>
> Thanks for your report. mt7623 use mtk_iommu_v1.c.
>
> I will try to reproduce this locally.
Hi,
as far as i have debugged it dev->iommu_group is NULL, so it crashes on first access (dev_info)
drivers/iommu/iommu.c:
923 void iommu_group_remove_device(struct device *dev)
924 {
925 printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);
926 struct iommu_group *group = dev->iommu_group;
927 struct group_device *tmp_device, *device = NULL;
928
929 printk(KERN_ALERT "DEBUG: Passed %s %d 0x%08x\n",__FUNCTION__,__LINE__,(unsigned int)group);
930 dev_info(dev, "Removing from iommu group %d\n", group->id);
regards Frank
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prev parent reply other threads:[~2021-07-14 11:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 2:56 [PATCH v6 00/11] Clean up "mediatek,larb" Yong Wu
2021-07-14 2:56 ` [PATCH v6 01/11] dt-binding: mediatek: Get rid of mediatek, larb for multimedia HW Yong Wu
2021-07-14 8:13 ` Dafna Hirschfeld
2021-07-14 8:49 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 02/11] iommu/mediatek: Add probe_defer for smi-larb Yong Wu
2021-07-14 2:56 ` [PATCH v6 03/11] iommu/mediatek: Add device_link between the consumer and the larb devices Yong Wu
2021-07-14 8:26 ` Dafna Hirschfeld
2021-07-14 11:16 ` Yong Wu
2021-07-14 2:56 ` [PATCH v6 04/11] media: mtk-jpeg: Get rid of mtk_smi_larb_get/put Yong Wu
2021-07-14 8:28 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 05/11] media: mtk-mdp: " Yong Wu
2021-07-14 8:29 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 06/11] drm/mediatek: Add pm runtime support for ovl and rdma Yong Wu
2021-07-14 8:44 ` Dafna Hirschfeld
2021-07-14 11:17 ` Yong Wu
2021-07-14 2:56 ` [PATCH v6 07/11] drm/mediatek: Get rid of mtk_smi_larb_get/put Yong Wu
2021-07-14 8:30 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 08/11] media: mtk-vcodec: " Yong Wu
2021-07-14 8:31 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 09/11] memory: mtk-smi: " Yong Wu
2021-07-14 8:32 ` Dafna Hirschfeld
2021-07-14 2:56 ` [PATCH v6 10/11] arm: dts: mediatek: Get rid of mediatek, larb for MM nodes Yong Wu
2021-07-14 2:56 ` [PATCH v6 11/11] arm64: " Yong Wu
2021-07-14 8:56 ` [PATCH v6 00/11] Clean up "mediatek,larb" Dafna Hirschfeld
2021-07-14 11:18 ` Yong Wu
2021-07-14 8:59 ` Aw: " Frank Wunderlich
2021-07-14 11:18 ` Yong Wu
2021-07-14 11:23 ` Frank Wunderlich [this message]
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