diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 2ed0ac18e053..6e2cdd7b93d4 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2668,6 +2668,7 @@ static int dwc2_alloc_split_dma_aligned_buf(struct dwc2_hsotg *hsotg, static void dwc2_free_dma_aligned_buffer(struct urb *urb) { void *stored_xfer_buffer; + size_t length; if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER)) return; @@ -2676,9 +2677,14 @@ static void dwc2_free_dma_aligned_buffer(struct urb *urb) memcpy(&stored_xfer_buffer, urb->transfer_buffer + urb->transfer_buffer_length, sizeof(urb->transfer_buffer)); - if (usb_urb_dir_in(urb)) - memcpy(stored_xfer_buffer, urb->transfer_buffer, - urb->transfer_buffer_length); + if (usb_urb_dir_in(urb)) { + if (usb_pipeisoc(urb->pipe)) + length = urb->transfer_buffer_length; + else + length = urb->actual_length; + + memcpy(stored_xfer_buffer, urb->transfer_buffer, length); + } kfree(urb->transfer_buffer); urb->transfer_buffer = stored_xfer_buffer; |