From: Godfrey Mwangi godmwan@microsoft.com
On some platforms with low USB throughput, tranfers of huge files take a long time and watchdog timer can expire resulting in hardware reset. Avoid this by petting the watchdog as long as we have pending transfers.
Signed-off-by: Godfrey Mwangi godmwan@microsoft.com --- drivers/usb/host/xhci-ring.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index c8260cbdf9..de954314bc 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -18,6 +18,7 @@ #include <log.h> #include <asm/byteorder.h> #include <usb.h> +#include <watchdog.h> #include <asm/unaligned.h> #include <linux/bug.h> #include <linux/errno.h> @@ -758,6 +759,8 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, /* Calculate length for next transfer */ addr += trb_buff_len; trb_buff_len = min((length - running_total), TRB_MAX_BUFF_SIZE); + + schedule(); } while (running_total < length);
giveback_first_trb(udev, ep_index, start_cycle, start_trb);