usb: usbfs: correct kernel->user page attribute mismatch

[linux-2.6-microblaze.git] / drivers / usb / core / devio.c

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 6833c91..b9db981 100644 (file)
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -217,6 +217,7 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma)
 {
        struct usb_memory *usbm = NULL;
        struct usb_dev_state *ps = file->private_data;
+       struct usb_hcd *hcd = bus_to_hcd(ps->dev->bus);
        size_t size = vma->vm_end - vma->vm_start;
        void *mem;
        unsigned long flags;
@@ -250,9 +251,7 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma)
        usbm->vma_use_count = 1;
        INIT_LIST_HEAD(&usbm->memlist);
 
-       if (remap_pfn_range(vma, vma->vm_start,
-                       virt_to_phys(usbm->mem) >> PAGE_SHIFT,
-                       size, vma->vm_page_prot) < 0) {
+       if (dma_mmap_coherent(hcd->self.sysdev, vma, mem, dma_handle, size)) {
                dec_usb_memory_use_count(usbm, &usbm->vma_use_count);
                return -EAGAIN;
        }