diff options
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 619a3e503346..9c40709c2f4e 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -388,6 +388,7 @@ static struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node, static int iort_get_id_mapping_index(struct acpi_iort_node *node) { struct acpi_iort_smmu_v3 *smmu; + struct acpi_iort_pmcg *pmcg; switch (node->type) { case ACPI_IORT_NODE_SMMU_V3: @@ -415,6 +416,10 @@ static int iort_get_id_mapping_index(struct acpi_iort_node *node) return smmu->id_mapping_index; case ACPI_IORT_NODE_PMCG: + pmcg = (struct acpi_iort_pmcg *)node->node_data; + if (pmcg->overflow_gsiv || node->mapping_count == 0) + return -EINVAL; + return 0; default: return -EINVAL; |