}
if (PageHighMem(pfn_to_page(pfn))) {
- /* The buffer does not have a mapping. Map it in and copy */
unsigned int offset = orig_addr & ~PAGE_MASK;
- char *buffer;
+ struct page *page;
unsigned int sz = 0;
unsigned long flags;
sz = min_t(size_t, PAGE_SIZE - offset, size);
local_irq_save(flags);
- buffer = kmap_atomic(pfn_to_page(pfn));
+ page = pfn_to_page(pfn);
if (dir == DMA_TO_DEVICE)
- memcpy(vaddr, buffer + offset, sz);
+ memcpy_from_page(vaddr, page, offset, sz);
else
- memcpy(buffer + offset, vaddr, sz);
- kunmap_atomic(buffer);
+ memcpy_to_page(page, offset, vaddr, sz);
local_irq_restore(flags);
size -= sz;