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usb: xhci: pet watchdog during transfers

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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>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Godfrey Mwangi 2023-08-04 12:00:39 -07:00 committed by Marek Vasut
parent c7aafb20ce
commit fe91450a59
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/xhci-ring.c
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@ -17,6 +17,7 @@
#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>
@ -796,6 +797,8 @@ 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);