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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-11 08:39:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-11 08:39:35 +0100 |
| commit | 0e42b5fee8a8c5bc173f702b0745da6d9329c714 (patch) | |
| tree | a71b0daded5764fcc33b88f9344872c13f4b488e /drivers/acpi/scan.c | |
| parent | 386a766c4169006d0e9df44823849930b8995e32 (diff) | |
| parent | a39b6ac3781d46ba18193c9dbb2110f31e9bffe9 (diff) | |
| download | linux-0e42b5fee8a8c5bc173f702b0745da6d9329c714.tar.gz linux-0e42b5fee8a8c5bc173f702b0745da6d9329c714.tar.bz2 linux-0e42b5fee8a8c5bc173f702b0745da6d9329c714.zip | |
Merge 6.7-rc5 into char-misc-next
We need the char/misc fixes in here as well for testing and to build off
of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index fa5dd71a80fa..02bb2cce423f 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1568,17 +1568,22 @@ static const struct iommu_ops *acpi_iommu_configure_id(struct device *dev, 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 (ops) { + mutex_unlock(&iommu_probe_device_lock); return ops; + } err = iort_iommu_configure_id(dev, id_in); if (err && err != -EPROBE_DEFER) err = viot_iommu_configure(dev); + mutex_unlock(&iommu_probe_device_lock); /* * If we have reason to believe the IOMMU driver missed the initial |