diff options
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/swiotlb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 20f414f713e5..72506085795c 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -128,15 +128,17 @@ setup_io_tlb_npages(char *str) } early_param("swiotlb", setup_io_tlb_npages); +static bool no_iotlb_memory; + unsigned long swiotlb_nr_tbl(void) { - return io_tlb_nslabs; + return unlikely(no_iotlb_memory) ? 0 : io_tlb_nslabs; } EXPORT_SYMBOL_GPL(swiotlb_nr_tbl); unsigned int swiotlb_max_segment(void) { - return max_segment; + return unlikely(no_iotlb_memory) ? 0 : max_segment; } EXPORT_SYMBOL_GPL(swiotlb_max_segment); @@ -159,8 +161,6 @@ unsigned long swiotlb_size_or_default(void) return size ? size : (IO_TLB_DEFAULT_SIZE); } -static bool no_iotlb_memory; - void swiotlb_print_info(void) { unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT; |