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| author | Ruslan Bukin <br@FreeBSD.org> | 2022-05-07 09:27:17 +0000 |
|---|---|---|
| committer | Ruslan Bukin <br@FreeBSD.org> | 2022-05-07 09:27:17 +0000 |
| commit | 8b8e56dd5bc781b7d1c7185cd267b0b16a637aa2 (patch) | |
| tree | 0d498f1dd81533b9c273ed5b4aba6717d4c6fc8d | |
| parent | 6ff004272a1ebf4c326b2644a9e52e8c74a8254f (diff) | |
| download | src-8b8e56dd5bc781b7d1c7185cd267b0b16a637aa2.tar.gz src-8b8e56dd5bc781b7d1c7185cd267b0b16a637aa2.zip | |
Check if iommu ctx is valid before passing it to functions.
Differential Revision: https://reviews.freebsd.org/D35130
Sponsored by: UKRI
| -rw-r--r-- | sys/arm64/arm64/gicv3_its.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/arm64/arm64/gicv3_its.c b/sys/arm64/arm64/gicv3_its.c index 7b06a44f35b3..a77be66bdd7f 100644 --- a/sys/arm64/arm64/gicv3_its.c +++ b/sys/arm64/arm64/gicv3_its.c @@ -1481,6 +1481,8 @@ gicv3_iommu_init(device_t dev, device_t child, struct iommu_domain **domain) sc = device_get_softc(dev); ctx = iommu_get_dev_ctx(child); + if (ctx == NULL) + return (ENXIO); error = iommu_map_msi(ctx, PAGE_SIZE, GITS_TRANSLATER, IOMMU_MAP_ENTRY_WRITE, IOMMU_MF_CANWAIT, &sc->ma); *domain = iommu_get_ctx_domain(ctx); @@ -1494,6 +1496,9 @@ gicv3_iommu_deinit(device_t dev, device_t child) struct iommu_ctx *ctx; ctx = iommu_get_dev_ctx(child); + if (ctx == NULL) + return; + iommu_unmap_msi(ctx); } #endif |