From: Godfrey Mwangi <godm...@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 <godm...@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);
--
2.40.0
