This is a note to let you know that I've just added the patch titled
usb: dwc3: fix TRB completion when multiple TRBs are started
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-dwc3-fix-trb-completion-when-multiple-trbs-are-started.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0b93a4c838fa10370d72f86fe712426ac63804de Mon Sep 17 00:00:00 2001
From: Felipe Balbi <balbi@xxxxxx>
Date: Thu, 4 Sep 2014 10:28:10 -0500
Subject: usb: dwc3: fix TRB completion when multiple TRBs are started
From: Felipe Balbi <balbi@xxxxxx>
commit 0b93a4c838fa10370d72f86fe712426ac63804de upstream.
After commit 2ec2a8be (usb: dwc3: gadget:
always enable IOC on bulk/interrupt transfers)
we created a situation where it was possible to
hang a bulk/interrupt endpoint if we had more
than one pending request in our queue and they
were both started with a single Start Transfer
command.
The problems triggers because we had not enabled
Transfer In Progress event for those endpoints
and we were not able to process early giveback
of requests completed without LST bit set.
Fix the problem by finally enabling Xfer In Progress
event for all endpoint types, except control.
Fixes: 2ec2a8be (usb: dwc3: gadget: always
enable IOC on bulk/interrupt transfers)
Reported-by: Pratyush Anand <pratyush.anand@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -445,7 +445,7 @@ static int dwc3_gadget_set_ep_config(str
dep->stream_capable = true;
}
- if (usb_endpoint_xfer_isoc(desc))
+ if (!usb_endpoint_xfer_control(desc))
params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN;
/*
@@ -1937,12 +1937,6 @@ static void dwc3_endpoint_interrupt(stru
dwc3_endpoint_transfer_complete(dwc, dep, event, 1);
break;
case DWC3_DEPEVT_XFERINPROGRESS:
- if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
- dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n",
- dep->name);
- return;
- }
-
dwc3_endpoint_transfer_complete(dwc, dep, event, 0);
break;
case DWC3_DEPEVT_XFERNOTREADY:
Patches currently in stable-queue which might be from balbi@xxxxxx are
queue-3.14/usb-dwc3-omap-fix-ordering-for-runtime-pm-calls.patch
queue-3.14/usb-chipidea-msm-use-usb-phy-api-to-control-phy-state.patch
queue-3.14/usb-dwc3-fix-trb-completion-when-multiple-trbs-are-started.patch
queue-3.14/usb-gadget-f_fs-drop-duplicate-usb_functionfs_descs_head-declaration.patch
queue-3.14/usb-phy-tegra-avoid-use-of-sizeof-void.patch
queue-3.14/usb-phy-twl4030-usb-fix-lost-interrupts-after-id-pin-goes-down.patch
queue-3.14/usb-host-xhci-fix-compliance-mode-workaround.patch
queue-3.14/usb-phy-twl4030-usb-fix-regressions-to-runtime-pm-on-omaps.patch
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