From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
krzk@kernel.org, jonathanh@nvidia.com, thierry.reding@gmail.com,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev
Date: Tue, 29 Sep 2020 23:34:36 -0700 [thread overview]
Message-ID: <20200930063435.GC16460@Asurada-Nvidia> (raw)
In-Reply-To: <931eb16b-4529-2c20-c696-c57a9138aded@gmail.com>
On Wed, Sep 30, 2020 at 08:20:50AM +0300, Dmitry Osipenko wrote:
> 30.09.2020 08:10, Dmitry Osipenko пишет:
> > 30.09.2020 03:30, Nicolin Chen пишет:
> >> static void tegra_smmu_release_device(struct device *dev)
> >
> > The tegra_get_memory_controller() uses of_find_device_by_node(), hence
> > tegra_smmu_release_device() should put_device(mc) in order to balance
> > back the refcounting.
> >
>
> Actually, the put_device(mc) should be right after
> tegra_get_memory_controller() in tegra_smmu_probe_device() because SMMU
> is a part of MC, hence MC can't just go away.
Hmm..I found that there is no put_device() call in tegra20-devfreq.
Should we just put_device(pdev->dev) in tegra_get_memory_controller?
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next prev parent reply other threads:[~2020-09-30 6:40 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 0:30 [PATCH v2 0/3] iommu/tegra-smmu: Add PCI support Nicolin Chen
2020-09-30 0:30 ` [PATCH v2 1/3] memory: tegra: Add helper function tegra_get_memory_controller Nicolin Chen
2020-09-30 5:12 ` Dmitry Osipenko
2020-09-30 5:44 ` Nicolin Chen
2020-09-30 6:32 ` Dmitry Osipenko
2020-09-30 6:38 ` Nicolin Chen
2020-09-30 7:31 ` Dmitry Osipenko
2020-09-30 7:21 ` Krzysztof Kozlowski
2020-09-30 7:25 ` Nicolin Chen
2020-09-30 7:50 ` Krzysztof Kozlowski
2020-09-30 0:30 ` [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev Nicolin Chen
2020-09-30 5:10 ` Dmitry Osipenko
2020-09-30 5:20 ` Dmitry Osipenko
2020-09-30 5:50 ` Nicolin Chen
2020-09-30 6:34 ` Nicolin Chen [this message]
2020-09-30 5:11 ` Dmitry Osipenko
2020-09-30 5:49 ` Nicolin Chen
2020-09-30 6:10 ` Dmitry Osipenko
2020-09-30 6:13 ` Nicolin Chen
2020-09-30 6:33 ` Dmitry Osipenko
2020-09-30 5:24 ` Dmitry Osipenko
2020-09-30 5:39 ` Nicolin Chen
2020-09-30 5:48 ` Dmitry Osipenko
2020-09-30 5:39 ` Dmitry Osipenko
2020-09-30 5:41 ` Nicolin Chen
2020-09-30 5:59 ` Dmitry Osipenko
2020-09-30 6:19 ` Nicolin Chen
2020-09-30 0:30 ` [PATCH v2 3/3] iommu/tegra-smmu: Add PCI support Nicolin Chen
2020-09-30 5:10 ` Dmitry Osipenko
2020-09-30 5:28 ` Nicolin Chen
2020-09-30 5:10 ` Dmitry Osipenko
2020-09-30 5:29 ` Nicolin Chen
2020-09-30 5:58 ` Dmitry Osipenko
2020-09-30 7:16 ` Nicolin Chen
2020-09-30 5:10 ` Dmitry Osipenko
2020-09-30 5:34 ` Nicolin Chen
2020-09-30 6:01 ` Dmitry Osipenko
2020-09-30 7:12 ` Nicolin Chen
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