Fix the following gcc warning:
drivers/usb/host/xhci.c:1349:15: warning: variable ‘len’ set but not
used [-Wunused-but-set-variable ]
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
---
drivers/usb/host/xhci.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index ca9385d22f68..08290698b939 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1361,11 +1361,15 @@ 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_warn(hcd_to_xhci(hcd), "WARN Wrong transfer buffer read length: %u != %u\n",
+ len, buf_len);
+ }
urb->transfer_flags &= ~URB_DMA_MAP_SINGLE;
kfree(urb->transfer_buffer);
--
2.25.4
