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parisc: turn GET_IOC into an inline function 

This makes the function both more readable and more typesafe.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Christoph Hellwig 2019-01-29 19:13:05 +01:00 committed by Helge Deller
parent 9b8eeab019
commit 25c9dbe8bb
1 changed files with 8 additions and 4 deletions
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12
drivers/parisc/iommu.h
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@ -26,10 +26,14 @@ static inline void *parisc_walk_tree(struct device *dev)
return dev->platform_data;
}
#define GET_IOC(dev) ({ \
void *__pdata = parisc_walk_tree(dev); \
__pdata ? HBA_DATA(__pdata)->iommu : NULL; \
})
static inline struct ioc *GET_IOC(struct device *dev)
{
struct pci_hba_data *pdata = parisc_walk_tree(dev);
if (!pdata)
return NULL;
return pdata->iommu;
}
#ifdef CONFIG_IOMMU_CCIO
void *ccio_get_iommu(const struct parisc_device *dev);