xhci: Fix a bug in count_sg_trbs_needed() that resulted in an extra TRB
being counted in some cases.
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Signed-off-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
---
drivers/usb/host/xhci-ring.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 8939086..7714668 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2380,7 +2380,7 @@ static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb)
num_trbs++;
/* How many more 64KB chunks to transfer, how many more TRBs? */
- while (running_total < sg_dma_len(sg)) {
+ while (running_total < sg_dma_len(sg) && running_total < temp) {
num_trbs++;
running_total += TRB_MAX_BUFF_SIZE;
}
--
1.6.5.1.69.g36942
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