iommu/amd: Properly initialize irq-table lock

Fixes a lockdep warning.

Cc: stable@vger.kernel.org # >= v3.7
Reviewed-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index b05599dd2c43..f42793d1574d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3930,6 +3930,9 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic)
         if (!table)
                 goto out;
 
+        /* Initialize table spin-lock */
+        spin_lock_init(&table->lock);
+
         if (ioapic)
                 /* Keep the first 32 indexes free for IOAPIC interrupts */
                 table->min_index = 32;