Set the urb->actual_length to bytes successfully copied in case all bytes
weren't copied from a temporary buffer to the URB sg list.
Also print a debug message
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 27283654ca08..9248ce8d09a4 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1361,12 +1361,17 @@ static void xhci_unmap_temp_buf(struct usb_hcd *hcd, struct urb *urb)
urb->transfer_buffer_length,
dir);
- if (usb_urb_dir_in(urb))
+ if (usb_urb_dir_in(urb)) {
len = sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
urb->transfer_buffer,
buf_len,
0);
-
+ if (len != buf_len) {
+ xhci_dbg(hcd_to_xhci(hcd),
+ "Copy from tmp buf to urb sg list failed\n");
+ urb->actual_length = len;
+ }
+ }
urb->transfer_flags &= ~URB_DMA_MAP_SINGLE;
kfree(urb->transfer_buffer);
urb->transfer_buffer = NULL;
--
2.25.1
