From: Dmitry Osipenko <digetx@gmail.com>
To: Nicolin Chen <nicoleotsuka@gmail.com>,
thierry.reding@gmail.com, joro@8bytes.org, krzk@kernel.org
Cc: linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, jonathanh@nvidia.com
Subject: Re: [PATCH 4/5] iommu/tegra-smmu: Add PCI support
Date: Sun, 27 Sep 2020 01:18:15 +0300 [thread overview]
Message-ID: <b95b69fb-8570-f5dc-c486-b94958f2a791@gmail.com> (raw)
In-Reply-To: <20200926080719.6822-5-nicoleotsuka@gmail.com>
26.09.2020 11:07, Nicolin Chen пишет:
...
> +#ifdef CONFIG_PCI
> + if (!iommu_present(&pci_bus_type)) {
Is this iommu_present() check really needed?
> + pci_request_acs();
Shouldn't pci_request_acs() be invoked *after* bus_set_iommu() succeeds?
> + err = bus_set_iommu(&pci_bus_type, &tegra_smmu_ops);
> + if (err < 0) {
> + bus_set_iommu(&platform_bus_type, NULL);
> + iommu_device_unregister(&smmu->iommu);
> + iommu_device_sysfs_remove(&smmu->iommu);
> + return ERR_PTR(err);
> + }
> + }
> +#endif
> +
> if (IS_ENABLED(CONFIG_DEBUG_FS))
> tegra_smmu_debugfs_init(smmu);
>
>
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next prev parent reply other threads:[~2020-09-26 22:18 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-26 8:07 [PATCH 0/5] iommu/tegra-smmu: Adding PCI support and mappings debugfs node Nicolin Chen
2020-09-26 8:07 ` [PATCH 1/5] iommu/tegra-smmu: Unwrap tegra_smmu_group_get Nicolin Chen
2020-09-28 7:13 ` Thierry Reding
2020-09-28 19:33 ` Nicolin Chen
2020-09-26 8:07 ` [PATCH 2/5] iommu/tegra-smmu: Expend mutex protection range Nicolin Chen
2020-09-26 8:07 ` [PATCH 3/5] iommu/tegra-smmu: Use iommu_fwspec in .probe_/.attach_device() Nicolin Chen
2020-09-26 14:48 ` Dmitry Osipenko
2020-09-26 20:42 ` Nicolin Chen
2020-09-28 7:29 ` Thierry Reding
2020-09-28 7:52 ` Thierry Reding
2020-09-28 22:18 ` Nicolin Chen
2020-09-29 4:06 ` Dmitry Osipenko
2020-09-29 5:36 ` Nicolin Chen
2020-09-26 8:07 ` [PATCH 4/5] iommu/tegra-smmu: Add PCI support Nicolin Chen
2020-09-26 22:18 ` Dmitry Osipenko [this message]
2020-09-28 22:31 ` Nicolin Chen
2020-09-28 7:55 ` Thierry Reding
2020-09-28 22:33 ` Nicolin Chen
2020-09-26 8:07 ` [PATCH 5/5] iommu/tegra-smmu: Add pagetable mappings to debugfs Nicolin Chen
2020-09-26 14:48 ` Dmitry Osipenko
2020-09-26 20:47 ` Nicolin Chen
2020-09-26 21:41 ` Dmitry Osipenko
2020-09-26 21:24 ` Dmitry Osipenko
2020-09-26 21:37 ` Dmitry Osipenko
-- strict thread matches above, loose matches on Subject: below --
2019-01-16 20:50 [PATCH 1/5] iommu/tegra-smmu: Fix domain_alloc Navneet Kumar
[not found] ` <1547671814-30088-1-git-send-email-navneetk-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2019-01-16 20:50 ` [PATCH 4/5] iommu/tegra-smmu: Add PCI support Navneet Kumar
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