forked from luck/tmp_suning_uos_patched
vfio/spapr: Fix missing mutex unlock when creating a window
Commitd9c728949d
("vfio/spapr: Postpone default window creation") added an additional exit to the VFIO_IOMMU_SPAPR_TCE_CREATE case and made it possible to return from tce_iommu_ioctl() without unlocking container->lock; this fixes the issue. Fixes:d9c728949d
("vfio/spapr: Postpone default window creation") Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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@ -1123,12 +1123,11 @@ static long tce_iommu_ioctl(void *iommu_data,
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mutex_lock(&container->lock);
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ret = tce_iommu_create_default_window(container);
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if (ret)
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return ret;
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ret = tce_iommu_create_window(container, create.page_shift,
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create.window_size, create.levels,
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&create.start_addr);
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if (!ret)
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ret = tce_iommu_create_window(container,
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create.page_shift,
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create.window_size, create.levels,
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&create.start_addr);
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mutex_unlock(&container->lock);
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