diff options
Diffstat (limited to 'kernel/lib/iommu-common.c')
| -rw-r--r-- | kernel/lib/iommu-common.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/kernel/lib/iommu-common.c b/kernel/lib/iommu-common.c index df30632f0..858dc1aae 100644 --- a/kernel/lib/iommu-common.c +++ b/kernel/lib/iommu-common.c @@ -11,18 +11,13 @@ #include <linux/dma-mapping.h> #include <linux/hash.h> -#ifndef DMA_ERROR_CODE -#define DMA_ERROR_CODE (~(dma_addr_t)0x0) -#endif - static unsigned long iommu_large_alloc = 15; static DEFINE_PER_CPU(unsigned int, iommu_hash_common); static inline bool need_flush(struct iommu_map_table *iommu) { - return (iommu->lazy_flush != NULL && - (iommu->flags & IOMMU_NEED_FLUSH) != 0); + return ((iommu->flags & IOMMU_NEED_FLUSH) != 0); } static inline void set_flush(struct iommu_map_table *iommu) @@ -119,12 +114,12 @@ unsigned long iommu_tbl_range_alloc(struct device *dev, unsigned long align_mask = 0; if (align_order > 0) - align_mask = 0xffffffffffffffffl >> (64 - align_order); + align_mask = ~0ul >> (BITS_PER_LONG - align_order); /* Sanity check */ if (unlikely(npages == 0)) { WARN_ON_ONCE(1); - return DMA_ERROR_CODE; + return IOMMU_ERROR_CODE; } if (largealloc) { @@ -207,11 +202,12 @@ unsigned long iommu_tbl_range_alloc(struct device *dev, goto again; } else { /* give up */ - n = DMA_ERROR_CODE; + n = IOMMU_ERROR_CODE; goto bail; } } - if (n < pool->hint || need_flush(iommu)) { + if (iommu->lazy_flush && + (n < pool->hint || need_flush(iommu))) { clear_flush(iommu); iommu->lazy_flush(iommu); } @@ -259,7 +255,7 @@ void iommu_tbl_range_free(struct iommu_map_table *iommu, u64 dma_addr, unsigned long flags; unsigned long shift = iommu->table_shift; - if (entry == DMA_ERROR_CODE) /* use default addr->entry mapping */ + if (entry == IOMMU_ERROR_CODE) /* use default addr->entry mapping */ entry = (dma_addr - iommu->table_map_base) >> shift; pool = get_pool(iommu, entry); |