From: Yong Wu <yong.wu@mediatek.com>
To: 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>
Cc: 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>, <yong.wu@mediatek.com>,
<youlin.pei@mediatek.com>, Matthias Kaehlcke <mka@chromium.org>,
<anan.sun@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>,
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>,
Frank Wunderlich <frank-w@public-files.de>,
<mingyuan.ma@mediatek.com>, <yf.wang@mediatek.com>,
<libo.kang@mediatek.com>
Subject: [PATCH v9 03/15] iommu/mediatek: Return ENODEV if the device is NULL
Date: Fri, 12 Nov 2021 18:54:57 +0800 [thread overview]
Message-ID: <20211112105509.12010-4-yong.wu@mediatek.com> (raw)
In-Reply-To: <20211112105509.12010-1-yong.wu@mediatek.com>
The platform device is created at:
of_platform_default_populate_init: arch_initcall_sync
->of_platform_populate
->of_platform_device_create_pdata
When entering our probe, all the devices should be already created.
if it is null, means NODEV. Currently we don't get the fail case.
It's a minor fix, no need add fixes tags.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 2 +-
drivers/iommu/mtk_iommu_v1.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index d837adfd1da5..8f566d2e72e5 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -846,7 +846,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
plarbdev = of_find_device_by_node(larbnode);
if (!plarbdev) {
of_node_put(larbnode);
- return -EPROBE_DEFER;
+ return -ENODEV;
}
data->larb_imu[id].dev = &plarbdev->dev;
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 1467ba1e4417..68bf02f87cfd 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -604,7 +604,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
plarbdev = of_find_device_by_node(larbnode);
if (!plarbdev) {
of_node_put(larbnode);
- return -EPROBE_DEFER;
+ return -ENODEV;
}
data->larb_imu[i].dev = &plarbdev->dev;
--
2.18.0
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next prev parent reply other threads:[~2021-11-12 10:58 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-12 10:54 [PATCH v9 00/15] Clean up "mediatek,larb" Yong Wu
2021-11-12 10:54 ` [PATCH v9 01/15] dt-binding: mediatek: Get rid of mediatek, larb for multimedia HW Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:54 ` [PATCH v9 02/15] iommu/mediatek-v1: Free the existed fwspec if the master dev already has Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:54 ` Yong Wu [this message]
2022-01-11 10:57 ` [PATCH v9 03/15] iommu/mediatek: Return ENODEV if the device is NULL AngeloGioacchino Del Regno
2021-11-12 10:54 ` [PATCH v9 04/15] iommu/mediatek: Add probe_defer for smi-larb Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:54 ` [PATCH v9 05/15] iommu/mediatek: Add device_link between the consumer and the larb devices Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 06/15] media: mtk-jpeg: Get rid of mtk_smi_larb_get/put Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 07/15] media: mtk-mdp: " Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 08/15] drm/mediatek: Add pm runtime support for ovl and rdma Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 09/15] drm/mediatek: Get rid of mtk_smi_larb_get/put Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 10/15] media: mtk-vcodec: " Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 11/15] media: mtk-vcodec: dec: Remove mtk_vcodec_release_dec_pm Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 12/15] media: mtk-vcodec: enc: Remove mtk_vcodec_release_enc_pm Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2022-01-13 10:11 ` AngeloGioacchino Del Regno
2022-01-13 10:15 ` Hans Verkuil
2022-01-13 10:17 ` AngeloGioacchino Del Regno
2022-01-13 16:10 ` Matthias Brugger
2022-01-17 9:41 ` Yong Wu
2022-01-21 11:56 ` Hans Verkuil
2021-11-12 10:55 ` [PATCH v9 13/15] memory: mtk-smi: Get rid of mtk_smi_larb_get/put Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-11-12 10:55 ` [PATCH v9 14/15] arm: dts: mediatek: Get rid of mediatek, larb for MM nodes Yong Wu
2021-11-12 10:55 ` [PATCH v9 15/15] arm64: " Yong Wu
2022-01-11 10:57 ` AngeloGioacchino Del Regno
2021-12-06 11:52 ` [PATCH v9 00/15] Clean up "mediatek,larb" Joerg Roedel
2021-12-06 12:33 ` Hans Verkuil
2021-12-06 13:48 ` Joerg Roedel
2021-12-06 12:23 ` Hans Verkuil
2021-12-06 13:06 ` Hsin-Yi Wang
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