diff options
Diffstat (limited to 'drivers/iommu/intel/irq_remapping.c')
| -rw-r--r-- | drivers/iommu/intel/irq_remapping.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c index aeffda92b10b..611ef5243cb6 100644 --- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -22,6 +22,7 @@ #include <asm/pci-direct.h> #include "../irq_remapping.h" +#include "cap_audit.h" enum irq_mode { IRQ_REMAPPING, @@ -734,6 +735,9 @@ static int __init intel_prepare_irq_remapping(void) if (dmar_table_init() < 0) return -ENODEV; + if (intel_cap_audit(CAP_AUDIT_STATIC_IRQR, NULL)) + goto error; + if (!dmar_ir_support()) return -ENODEV; @@ -1353,6 +1357,8 @@ static int intel_irq_remapping_alloc(struct irq_domain *domain, irq_data = irq_domain_get_irq_data(domain, virq + i); irq_cfg = irqd_cfg(irq_data); if (!irq_data || !irq_cfg) { + if (!i) + kfree(data); ret = -EINVAL; goto out_free_data; } @@ -1437,6 +1443,10 @@ static int dmar_ir_add(struct dmar_drhd_unit *dmaru, struct intel_iommu *iommu) int ret; int eim = x2apic_enabled(); + ret = intel_cap_audit(CAP_AUDIT_HOTPLUG_IRQR, iommu); + if (ret) + return ret; + if (eim && !ecap_eim_support(iommu->ecap)) { pr_info("DRHD %Lx: EIM not supported by DRHD, ecap %Lx\n", iommu->reg_phys, iommu->ecap); |