From: Hanjun Guo <guohanjun@huawei.com>
To: Joerg Roedel <joro@8bytes.org>, <iommu@lists.linux-foundation.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>,
Sudeep Holla <sudeep.holla@arm.com>,
Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
Joerg Roedel <jroedel@suse.de>
Subject: Re: [PATCH v4 02/16] ACPI/IORT: Remove direct access of dev->iommu_fwspec
Date: Fri, 27 Mar 2020 11:30:53 +0800 [thread overview]
Message-ID: <82dea1be-4a2e-e914-c607-8aeb924eb36f@huawei.com> (raw)
In-Reply-To: <20200326150841.10083-3-joro@8bytes.org>
On 2020/3/26 23:08, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@suse.de>
>
> Use the accessor functions instead of directly dereferencing
> dev->iommu_fwspec.
>
> Tested-by: Hanjun Guo <guohanjun@huawei.com>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Signed-off-by: Joerg Roedel <jroedel@suse.de>
> ---
> drivers/acpi/arm64/iort.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
> index ed3d2d1a7ae9..7d04424189df 100644
> --- a/drivers/acpi/arm64/iort.c
> +++ b/drivers/acpi/arm64/iort.c
> @@ -1015,6 +1015,7 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
> return ops;
>
> if (dev_is_pci(dev)) {
> + struct iommu_fwspec *fwspec;
> struct pci_bus *bus = to_pci_dev(dev)->bus;
> struct iort_pci_alias_info info = { .dev = dev };
>
> @@ -1027,8 +1028,9 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
> err = pci_for_each_dma_alias(to_pci_dev(dev),
> iort_pci_iommu_init, &info);
...
>
> - if (!err && iort_pci_rc_supports_ats(node))
> - dev->iommu_fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS;
> + fwspec = dev_iommu_fwspec_get(dev);
> + if (fwspec && iort_pci_rc_supports_ats(node))
Should we check !err as well?
Thanks
Hanjun
> + fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS;
> } else {
> int i = 0;
>
>
next prev parent reply other threads:[~2020-03-27 3:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 15:08 [PATCH v4 00/16] iommu: Move iommu_fwspec out of 'struct device' Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 01/16] iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 02/16] ACPI/IORT: Remove direct access of dev->iommu_fwspec Joerg Roedel
2020-03-27 3:30 ` Hanjun Guo [this message]
2020-03-27 8:45 ` Jean-Philippe Brucker
2020-03-26 15:08 ` [PATCH v4 03/16] drm/msm/mdp5: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 04/16] iommu/tegra-gart: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 05/16] iommu: Rename struct iommu_param to dev_iommu Joerg Roedel
2020-03-26 15:12 ` Greg Kroah-Hartman
2020-03-26 15:08 ` [PATCH v4 06/16] iommu: Move iommu_fwspec to struct dev_iommu Joerg Roedel
2020-03-26 15:12 ` Greg Kroah-Hartman
2020-03-26 15:08 ` [PATCH v4 07/16] iommu/arm-smmu: Fix uninitilized variable warning Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 08/16] iommu: Introduce accessors for iommu private data Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 09/16] iommu/arm-smmu-v3: Use accessor functions " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 10/16] iommu/arm-smmu: Refactor master_cfg/fwspec usage Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 11/16] iommu/arm-smmu: Use accessor functions for iommu private data Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 12/16] iommu/renesas: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 13/16] iommu/mediatek: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 14/16] iommu/qcom: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 15/16] iommu/virtio: " Joerg Roedel
2020-03-26 15:08 ` [PATCH v4 16/16] iommu: Move fwspec->iommu_priv to struct dev_iommu Joerg Roedel
2020-03-27 10:16 ` [PATCH v4 00/16] iommu: Move iommu_fwspec out of 'struct device' Joerg Roedel
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