diff options
Diffstat (limited to 'drivers/xen/swiotlb-xen.c')
-rw-r--r-- | drivers/xen/swiotlb-xen.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 989cf872b98c..877baf2a94f4 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -214,10 +214,13 @@ retry: /* * Get IO TLB memory from any location. */ - if (early) + if (early) { xen_io_tlb_start = memblock_alloc(PAGE_ALIGN(bytes), PAGE_SIZE); - else { + if (!xen_io_tlb_start) + panic("%s: Failed to allocate %lu bytes align=0x%lx\n", + __func__, PAGE_ALIGN(bytes), PAGE_SIZE); + } else { #define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT)) #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT) while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) { @@ -645,7 +648,7 @@ xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs) { -#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) +#ifdef CONFIG_ARM if (xen_get_dma_ops(dev)->mmap) return xen_get_dma_ops(dev)->mmap(dev, vma, cpu_addr, dma_addr, size, attrs); @@ -662,7 +665,7 @@ xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t handle, size_t size, unsigned long attrs) { -#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) +#ifdef CONFIG_ARM if (xen_get_dma_ops(dev)->get_sgtable) { #if 0 /* |