diff options
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index c5a9190b218f..0ef6b12f961d 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -326,9 +326,6 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, swiotlb_adjust_nareas(num_possible_cpus()); nslabs = default_nslabs; - if (nslabs < IO_TLB_MIN_SLABS) - panic("%s: nslabs = %lu too small\n", __func__, nslabs); - /* * By default allocate the bounce buffer memory from low memory, but * allow to pick a location everywhere for hypervisors with guest @@ -341,8 +338,7 @@ retry: else tlb = memblock_alloc_low(bytes, PAGE_SIZE); if (!tlb) { - pr_warn("%s: Failed to allocate %zu bytes tlb structure\n", - __func__, bytes); + pr_warn("%s: failed to allocate tlb structure\n", __func__); return; } @@ -579,7 +575,10 @@ static void swiotlb_bounce(struct device *dev, phys_addr_t tlb_addr, size_t size } } -#define slot_addr(start, idx) ((start) + ((idx) << IO_TLB_SHIFT)) +static inline phys_addr_t slot_addr(phys_addr_t start, phys_addr_t idx) +{ + return start + (idx << IO_TLB_SHIFT); +} /* * Carefully handle integer overflow which can occur when boundary_mask == ~0UL. @@ -765,7 +764,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr, /* * When dir == DMA_FROM_DEVICE we could omit the copy from the orig * to the tlb buffer, if we knew for sure the device will - * overwirte the entire current content. But we don't. Thus + * overwrite the entire current content. But we don't. Thus * unconditional bounce may prevent leaking swiotlb content (i.e. * kernel memory) to user-space. */ |