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ACPI: Retire acpi_iommu_fwspec_ops()

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Now that iommu_fwspec_init() can signal for probe deferral directly,
acpi_iommu_fwspec_ops() is unneeded and can be cleaned up.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/011e39e275aba3ad451c5a1965ca8ddf20ed36c2.1719919669.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Robin Murphy 2024-07-02 12:40:49 +01:00 committed by Will Deacon
parent 3f7c320916
commit 78596b5c32
1 changed files with 5 additions and 23 deletions
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28
drivers/acpi/scan.c
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@ -1588,26 +1588,14 @@ int acpi_iommu_fwspec_init(struct device *dev, u32 id,
return iommu_fwspec_add_ids(dev, &id, 1);
}
static inline const struct iommu_ops *acpi_iommu_fwspec_ops(struct device *dev)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
return fwspec ? fwspec->ops : NULL;
}
static int acpi_iommu_configure_id(struct device *dev, const u32 *id_in)
{
int err;
const struct iommu_ops *ops;
/* Serialise to make dev->iommu stable under our potential fwspec */
mutex_lock(&iommu_probe_device_lock);
/*
* If we already translated the fwspec there is nothing left to do,
* return the iommu_ops.
*/
ops = acpi_iommu_fwspec_ops(dev);
if (ops) {
/* If we already translated the fwspec there is nothing left to do */
if (dev_iommu_fwspec_get(dev)) {
mutex_unlock(&iommu_probe_device_lock);
return 0;
}
@ -1624,15 +1612,7 @@ static int acpi_iommu_configure_id(struct device *dev, const u32 *id_in)
if (!err && dev->bus)
err = iommu_probe_device(dev);
if (err == -EPROBE_DEFER)
return err;
if (err) {
dev_dbg(dev, "Adding to IOMMU failed: %d\n", err);
return err;
}
if (!acpi_iommu_fwspec_ops(dev))
return -ENODEV;
return 0;
return err;
}
#else /* !CONFIG_IOMMU_API */
@ -1672,6 +1652,8 @@ int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
ret = acpi_iommu_configure_id(dev, input_id);
if (ret == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (ret)
dev_dbg(dev, "Adding to IOMMU failed: %d\n", ret);
arch_setup_dma_ops(dev, attr == DEV_DMA_COHERENT);