[ 10/73] iommu/amd: Properly initialize irq-table lock

From: Greg Kroah-Hartman
Date: Thu May 09 2013 - 19:13:59 EST


3.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Joerg Roedel <joro@xxxxxxxxxx>

commit 197887f03daecdb3ae21bafeb4155412abad3497 upstream.

Fixes a lockdep warning.

Reviewed-by: Shuah Khan <shuahkhan@xxxxxxxxx>
Signed-off-by: Joerg Roedel <joro@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/iommu/amd_iommu.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3947,6 +3947,9 @@ static struct irq_remap_table *get_irq_t
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;


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