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iommu/core: Define iommu_ops and register_iommu only with CONFIG_IOMMU_API 

This makes it impossible to compile an iommu driver into the
kernel without selecting CONFIG_IOMMU_API.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
hifive-unleashed-5.1
Joerg Roedel 2011-09-06 16:48:40 +02:00
parent 51acc0bcfc
commit 39d4ebb959
1 changed files with 3 additions and 5 deletions
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8
include/linux/iommu.h
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@ -34,6 +34,8 @@ struct iommu_domain {
#define IOMMU_CAP_CACHE_COHERENCY 0x1
#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
#ifdef CONFIG_IOMMU_API
struct iommu_ops {
int (*domain_init)(struct iommu_domain *domain);
void (*domain_destroy)(struct iommu_domain *domain);
@ -49,8 +51,6 @@ struct iommu_ops {
unsigned long cap);
};
#ifdef CONFIG_IOMMU_API
extern void register_iommu(struct iommu_ops *ops);
extern bool iommu_found(void);
extern struct iommu_domain *iommu_domain_alloc(void);
@ -70,9 +70,7 @@ extern int iommu_domain_has_cap(struct iommu_domain *domain,
#else /* CONFIG_IOMMU_API */
static inline void register_iommu(struct iommu_ops *ops)
{
}
struct iommu_ops {};
static inline bool iommu_found(void)
{