[PATCH] This patch fixes endian issue in xHCI for scratchpad buffer.

[Aleksey Kuleshov]

Scratchpad buffer is an array of pointers every of which must be
in little endian format.

Signed-off-by: Aleksey Kuleshov <rnd...@yandex.ru>
---
 drivers/usb/host/xhci-mem.c | 6 +++---
 drivers/usb/host/xhci.h     | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index cf5e179..ffc3236 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1677,7 +1677,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t 
flags)
                if (!buf)
                        goto fail_sp4;
 
-               xhci->scratchpad->sp_array[i] = dma;
+               xhci->scratchpad->sp_array[i] = cpu_to_le64(dma);
                xhci->scratchpad->sp_buffers[i] = buf;
        }
 
@@ -1687,7 +1687,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t 
flags)
        for (i = i - 1; i >= 0; i--) {
                dma_free_coherent(dev, xhci->page_size,
                                    xhci->scratchpad->sp_buffers[i],
-                                   xhci->scratchpad->sp_array[i]);
+                                   le64_to_cpu(xhci->scratchpad->sp_array[i]));
        }
 
        kfree(xhci->scratchpad->sp_buffers);
@@ -1719,7 +1719,7 @@ static void scratchpad_free(struct xhci_hcd *xhci)
        for (i = 0; i < num_sp; i++) {
                dma_free_coherent(dev, xhci->page_size,
                                    xhci->scratchpad->sp_buffers[i],
-                                   xhci->scratchpad->sp_array[i]);
+                                   le64_to_cpu(xhci->scratchpad->sp_array[i]));
        }
        kfree(xhci->scratchpad->sp_buffers);
        dma_free_coherent(dev, num_sp * sizeof(u64),
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 9334cde..385fa70 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1621,7 +1621,7 @@ struct xhci_erst {
 };
 
 struct xhci_scratchpad {
-       u64 *sp_array;
+       __le64 *sp_array;
        dma_addr_t sp_dma;
        void **sp_buffers;
 };
-- 
1.8.3.1