From: Joerg Roedel <joro@8bytes.org>
Date: Tue, 9 Apr 2013 19:14:08 +0000 (+0200)
Subject: iommu/amd: Properly initialize irq-table lock
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=197887f03daecdb3ae21bafeb4155412abad3497;p=linux-beck.git

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>
---

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;