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iommu/amd: Properly initialize irq-table lock

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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>
This commit is contained in:
Joerg Roedel 2013-04-09 21:14:08 +02:00
parent 0dfedd6194
commit 197887f03d
1 changed files with 3 additions and 0 deletions
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3
drivers/iommu/amd_iommu.c
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@ -3930,6 +3930,9 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic)
if (!table) if (!table)
goto out; goto out;
/* Initialize table spin-lock */
spin_lock_init(&table->lock);
if (ioapic) if (ioapic)
/* Keep the first 32 indexes free for IOAPIC interrupts */ /* Keep the first 32 indexes free for IOAPIC interrupts */
table->min_index = 32; table->min_index = 32;