diff options
Diffstat (limited to 'drivers/xen/swiotlb-xen.c')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index e2c35f45f91e..03d118b6c141 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -52,11 +52,6 @@ static unsigned long xen_io_tlb_nslabs; * Quick lookup value of the bus address of the IOTLB. */ -/* - * Both of these functions should avoid XEN_PFN_PHYS because phys_addr_t - * can be 32bit when dma_addr_t is 64bit leading to a loss in - * information if the shift is done before casting to 64bit. - */ static inline dma_addr_t xen_phys_to_bus(struct device *dev, phys_addr_t paddr) { unsigned long bfn = pfn_to_bfn(XEN_PFN_DOWN(paddr)); @@ -101,7 +96,7 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr) { unsigned long bfn = XEN_PFN_DOWN(dma_addr); unsigned long xen_pfn = bfn_to_local_pfn(bfn); - phys_addr_t paddr = XEN_PFN_PHYS(xen_pfn); + phys_addr_t paddr = (phys_addr_t)xen_pfn << XEN_PAGE_SHIFT; /* If the address is outside our domain, it CAN * have the same virtual address as another address |