From f21ffe9f6da6d3a69c518b7345c198d48d941c34 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 11 Aug 2011 16:50:56 -0400 Subject: swiotlb: Expose swiotlb_nr_tlb function to modules As a mechanism to detect whether SWIOTLB is enabled or not. We also fix the spelling - it was swioltb instead of swiotlb. CC: FUJITA Tomonori [v1: Ripped out swiotlb_enabled] Signed-off-by: Konrad Rzeszutek Wilk --- lib/swiotlb.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lib/swiotlb.c') diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 99093b396145..058935ef3975 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -110,11 +110,11 @@ setup_io_tlb_npages(char *str) __setup("swiotlb=", setup_io_tlb_npages); /* make io_tlb_overflow tunable too? */ -unsigned long swioltb_nr_tbl(void) +unsigned long swiotlb_nr_tbl(void) { return io_tlb_nslabs; } - +EXPORT_SYMBOL_GPL(swiotlb_nr_tbl); /* Note that this doesn't work with highmem page */ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, volatile void *address) @@ -321,6 +321,7 @@ void __init swiotlb_free(void) free_bootmem_late(__pa(io_tlb_start), PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); } + io_tlb_nslabs = 0; } static int is_swiotlb_buffer(phys_addr_t paddr) -- cgit v1.2.3