[PATCH] iommu: Initialize domain->handler in iommu_domain_alloc()

[KyongHo Cho]

Since it is not guaranteed that an iommu driver initializes in its
domain_init() function, it must be initialized with NULL to prevent
calling a function in an arbitrary location when iommu fault occurred.

Signed-off-by: KyongHo Cho <pullip.cho@xxxxxxxxxxx>
---
 drivers/iommu/iommu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 7cc3c65..2198b2d 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -143,7 +143,7 @@ struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
 	if (bus == NULL || bus->iommu_ops == NULL)
 		return NULL;
 
-	domain = kmalloc(sizeof(*domain), GFP_KERNEL);
+	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
 	if (!domain)
 		return NULL;
 
-- 
1.7.1

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