linux-kernel - [PATCH 2/3] usb: dwc2: host: do not delay retries after successful transfer

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Message-Id: <20180615220131.65402-2-dmitry.torokhov@gmail.com>
Date:   Fri, 15 Jun 2018 15:01:30 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Felipe Balbi <felipe.balbi@...ux.intel.com>,
        Minas Harutyunyan <hminas@...opsys.com>
Cc:     Douglas Anderson <dianders@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] usb: dwc2: host: do not delay retries after successful transfer

When handling split transactions we should not be delaying retrying
SSPLIT/CSPLIT after we successfully communicate with the device, so
let's reset dtd->num_naks counter when handling XFERCOMPL.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/usb/dwc2/hcd_intr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index d423b6a49f96c..b9879de6230d0 100644
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -1092,6 +1092,7 @@ static void dwc2_hc_xfercomp_intr(struct dwc2_hsotg *hsotg,
 	}
 
 handle_xfercomp_done:
+	qtd->num_naks = 0;
 	disable_hc_int(hsotg, chnum, HCINTMSK_XFERCOMPL);
 }
 
-- 
2.18.0.rc1.244.gcf134e6275-goog