diff options
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 9f5851064aea..dd6a8e2d53a7 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -199,6 +199,7 @@ void __init swiotlb_update_mem_attributes(void) int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) { unsigned long i, bytes; + size_t alloc_size; bytes = nslabs << IO_TLB_SHIFT; @@ -211,12 +212,18 @@ int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE * between io_tlb_start and io_tlb_end. */ - io_tlb_list = memblock_alloc( - PAGE_ALIGN(io_tlb_nslabs * sizeof(int)), - PAGE_SIZE); - io_tlb_orig_addr = memblock_alloc( - PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t)), - PAGE_SIZE); + alloc_size = PAGE_ALIGN(io_tlb_nslabs * sizeof(int)); + io_tlb_list = memblock_alloc(alloc_size, PAGE_SIZE); + if (!io_tlb_list) + panic("%s: Failed to allocate %lu bytes align=0x%lx\n", + __func__, alloc_size, PAGE_SIZE); + + alloc_size = PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t)); + io_tlb_orig_addr = memblock_alloc(alloc_size, PAGE_SIZE); + if (!io_tlb_orig_addr) + panic("%s: Failed to allocate %lu bytes align=0x%lx\n", + __func__, alloc_size, PAGE_SIZE); + for (i = 0; i < io_tlb_nslabs; i++) { io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; |