From 35b2719e72d375f3e32c819858165668d948d5f2 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 8 Mar 2017 13:56:37 +0200 Subject: [PATCH] usb: dwc3: gadget: make to increment req->remaining in all cases Sometimes, we might get a completion for a TRB which is left with HWO bit. Even in these cases, we should increment req->remaining to properly report total transferred size. I noticed this while debuggin a separate problem seen with MSC tests from USBCV. Sometimes we would erroneously report a completion for a 512-byte transfer when, in reality, we transferred 0 bytes. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 3db5eeae2bfb..0d75158e43fe 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2189,12 +2189,12 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, return 1; } - if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) - return 1; - count = trb->size & DWC3_TRB_SIZE_MASK; req->remaining += count; + if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) + return 1; + if (dep->direction) { if (count) { trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size); -- 2.20.1