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IOMMU fixes for Linux v3.6-rc7

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Two small patches:
 
 	* One patch to fix the function declarations for
 	  !CONFIG_IOMMU_API. This is causing build errors
 	  in linux-next and should be fixed for v3.6.
 
 	* Another patch to fix an IOMMU group related NULL pointer
 	  dereference.
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Merge tag 'iommu-fixes-v3.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "Two small patches:

	* One patch to fix the function declarations for
	  !CONFIG_IOMMU_API. This is causing build errors
	  in linux-next and should be fixed for v3.6.

	* Another patch to fix an IOMMU group related NULL pointer
	  dereference."

* tag 'iommu-fixes-v3.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix wrong assumption in iommu-group specific code
  iommu: static inline iommu group stub functions
This commit is contained in:
Linus Torvalds 2012-09-29 10:37:04 -07:00
commit 6a3e3dbee6
2 changed files with 28 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/iommu/amd_iommu.c
View File

@ -266,7 +266,7 @@ static void swap_pci_ref(struct pci_dev **from, struct pci_dev *to)
static int iommu_init_device(struct device *dev)
{
struct pci_dev *dma_pdev, *pdev = to_pci_dev(dev);
struct pci_dev *dma_pdev = NULL, *pdev = to_pci_dev(dev);
struct iommu_dev_data *dev_data;
struct iommu_group *group;
u16 alias;
@ -293,7 +293,9 @@ static int iommu_init_device(struct device *dev)
dev_data->alias_data = alias_data;
dma_pdev = pci_get_bus_and_slot(alias >> 8, alias & 0xff);
} else
}
if (dma_pdev == NULL)
dma_pdev = pci_dev_get(pdev);
/* Account for quirked devices */

42
include/linux/iommu.h
View File

@ -256,72 +256,78 @@ static inline void iommu_set_fault_handler(struct iommu_domain *domain,
{
}
int iommu_attach_group(struct iommu_domain *domain, struct iommu_group *group)
static inline int iommu_attach_group(struct iommu_domain *domain,
struct iommu_group *group)
{
return -ENODEV;
}
void iommu_detach_group(struct iommu_domain *domain, struct iommu_group *group)
static inline void iommu_detach_group(struct iommu_domain *domain,
struct iommu_group *group)
{
}
struct iommu_group *iommu_group_alloc(void)
static inline struct iommu_group *iommu_group_alloc(void)
{
return ERR_PTR(-ENODEV);
}
void *iommu_group_get_iommudata(struct iommu_group *group)
static inline void *iommu_group_get_iommudata(struct iommu_group *group)
{
return NULL;
}
void iommu_group_set_iommudata(struct iommu_group *group, void *iommu_data,
void (*release)(void *iommu_data))
static inline void iommu_group_set_iommudata(struct iommu_group *group,
void *iommu_data,
void (*release)(void *iommu_data))
{
}
int iommu_group_set_name(struct iommu_group *group, const char *name)
static inline int iommu_group_set_name(struct iommu_group *group,
const char *name)
{
return -ENODEV;
}
int iommu_group_add_device(struct iommu_group *group, struct device *dev)
static inline int iommu_group_add_device(struct iommu_group *group,
struct device *dev)
{
return -ENODEV;
}
void iommu_group_remove_device(struct device *dev)
static inline void iommu_group_remove_device(struct device *dev)
{
}
int iommu_group_for_each_dev(struct iommu_group *group, void *data,
int (*fn)(struct device *, void *))
static inline int iommu_group_for_each_dev(struct iommu_group *group,
void *data,
int (*fn)(struct device *, void *))
{
return -ENODEV;
}
struct iommu_group *iommu_group_get(struct device *dev)
static inline struct iommu_group *iommu_group_get(struct device *dev)
{
return NULL;
}
void iommu_group_put(struct iommu_group *group)
static inline void iommu_group_put(struct iommu_group *group)
{
}
int iommu_group_register_notifier(struct iommu_group *group,
struct notifier_block *nb)
static inline int iommu_group_register_notifier(struct iommu_group *group,
struct notifier_block *nb)
{
return -ENODEV;
}
int iommu_group_unregister_notifier(struct iommu_group *group,
struct notifier_block *nb)
static inline int iommu_group_unregister_notifier(struct iommu_group *group,
struct notifier_block *nb)
{
return 0;
}
int iommu_group_id(struct iommu_group *group)
static inline int iommu_group_id(struct iommu_group *group)
{
return -ENODEV;
}