mirror of https://github.com/hak5/openwrt-owl.git
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 2fb3834b3ce43c6320c8186795b86ffa2257bd21 Mon Sep 17 00:00:00 2001
|
|
From: P33M <P33M@github.com>
|
|
Date: Fri, 20 Sep 2013 16:08:27 +0100
|
|
Subject: [PATCH 093/196] dwc_otg: Enable NAK holdoff for control split
|
|
transactions
|
|
|
|
Certain low-speed devices take a very long time to complete a
|
|
data or status stage of a control transaction, producing NAK
|
|
responses until they complete internal processing - the USB2.0
|
|
spec limit is up to 500mS. This causes the same type of interrupt
|
|
storm as seen with USB-serial dongles prior to c8edb238.
|
|
|
|
In certain circumstances, usually while booting, this interrupt
|
|
storm could cause SD card timeouts.
|
|
---
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 3 +--
|
|
1 file changed, 1 insertion(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
index 19abea0..509b629 100644
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
|
|
@@ -1857,8 +1857,7 @@ static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd,
|
|
*/
|
|
switch(dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
|
|
case UE_BULK:
|
|
- //case UE_INTERRUPT:
|
|
- //case UE_CONTROL:
|
|
+ case UE_CONTROL:
|
|
if (nak_holdoff_enable)
|
|
hc->qh->nak_frame = dwc_otg_hcd_get_frame_number(hcd);
|
|
}
|
|
--
|
|
1.9.1
|
|
|