diff options
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 3 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 5ae1512af5..db38fd43f6 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -408,6 +408,9 @@ static int xhci_scratchpad_alloc(struct xhci_ctrl *ctrl) scratchpad->sp_array[i] = cpu_to_le64(ptr); } + xhci_flush_cache((uintptr_t)scratchpad->sp_array, + sizeof(u64) * num_sp); + return 0; fail_sp3: diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 804384e030..d725b71983 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -670,6 +670,9 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, first_trb = true; + /* flush the buffer before use */ + xhci_flush_cache((uintptr_t)buffer, length); + /* Queue the first TRB, even if it's zero-length */ do { u32 remainder = 0; @@ -913,6 +916,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, trb_fields[2] = length_field; trb_fields[3] = field | ep_ring->cycle_state; + xhci_flush_cache((uintptr_t)buffer, length); queue_trb(ctrl, ep_ring, true, trb_fields); } |