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swiotlb: remove unused swiotlb_alloc()

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Nobody uses swiotlb_alloc().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>
This commit is contained in:
FUJITA Tomonori
2009-07-10 10:04:51 +09:00
parent 3885123da8
commit bb52196be3
3 changed files with 2 additions and 13 deletions
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5
arch/x86/kernel/pci-swiotlb.c
View File

@@ -13,11 +13,6 @@
int swiotlb __read_mostly; int swiotlb __read_mostly;
void *swiotlb_alloc(unsigned order, unsigned long nslabs)
{
return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
}
dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr) dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
{ {
return paddr; return paddr;

2
include/linux/swiotlb.h
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@@ -23,8 +23,6 @@ struct scatterlist;
extern void extern void
swiotlb_init(void); swiotlb_init(void);
extern void *swiotlb_alloc(unsigned order, unsigned long nslabs);
extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev,
phys_addr_t address); phys_addr_t address);
extern phys_addr_t swiotlb_bus_to_phys(struct device *hwdev, extern phys_addr_t swiotlb_bus_to_phys(struct device *hwdev,

8
lib/swiotlb.c
View File

@@ -114,11 +114,6 @@ setup_io_tlb_npages(char *str)
__setup("swiotlb=", setup_io_tlb_npages); __setup("swiotlb=", setup_io_tlb_npages);
/* make io_tlb_overflow tunable too? */ /* make io_tlb_overflow tunable too? */
void * __weak swiotlb_alloc(unsigned order, unsigned long nslabs)
{
return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
}
dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr) dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
{ {
return paddr; return paddr;
@@ -240,7 +235,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
bytes = io_tlb_nslabs << IO_TLB_SHIFT; bytes = io_tlb_nslabs << IO_TLB_SHIFT;
while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) { while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {
io_tlb_start = swiotlb_alloc(order, io_tlb_nslabs); io_tlb_start = (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN,
order);
if (io_tlb_start) if (io_tlb_start)
break; break;
order--; order--;