[PATCH v8 04/08] iommu/ipmmu-vmsa: Break out domain allocation code

[Magnus Damm]

From: Magnus Damm <damm+rene...@opensource.se>

Break out the domain allocation code into a separate function.

This is preparation for future code sharing.

Signed-off-by: Magnus Damm <damm+rene...@opensource.se>
Reviewed-by: Joerg Roedel <jroe...@suse.de>
Reviewed-by: Geert Uytterhoeven <geert+rene...@glider.be>
---

 Changes since V7:
 - Added Reviewed-by from Geert - Thanks!

 drivers/iommu/ipmmu-vmsa.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

--- 0006/drivers/iommu/ipmmu-vmsa.c
+++ work/drivers/iommu/ipmmu-vmsa.c     2017-05-17 16:39:05.380607110 +0900
@@ -509,13 +509,10 @@ static irqreturn_t ipmmu_irq(int irq, vo
  * IOMMU Operations
  */
 
-static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
+static struct iommu_domain *__ipmmu_domain_alloc(unsigned type)
 {
        struct ipmmu_vmsa_domain *domain;
 
-       if (type != IOMMU_DOMAIN_UNMANAGED)
-               return NULL;
-
        domain = kzalloc(sizeof(*domain), GFP_KERNEL);
        if (!domain)
                return NULL;
@@ -525,6 +522,14 @@ static struct iommu_domain *ipmmu_domain
        return &domain->io_domain;
 }
 
+static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
+{
+       if (type != IOMMU_DOMAIN_UNMANAGED)
+               return NULL;
+
+       return __ipmmu_domain_alloc(type);
+}
+
 static void ipmmu_domain_free(struct iommu_domain *io_domain)
 {
        struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);