Patch "usb: dwc3: core: avoid Overflow events" has been added to the 4.9-stable tree
Subsystems (3)
This is a note to let you know that I've just added the patch titled
usb: dwc3: core: avoid Overflow events
to the 4.9-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-core-avoid-overflow-events.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
e71d363d9c611c99fb78f53bfee99616e7fe352cMon Sep 17 00:00:00 2001
From: Felipe Balbi <[email protected]>
Date: Fri, 23 Dec 2016 14:40:40 +0200
Subject: usb: dwc3: core: avoid Overflow events
From: Felipe Balbi <[email protected]>
commit e71d363d9c611c99fb78f53bfee99616e7fe352c upstream.
Now that we're handling so many transfers at a time and for some dwc3 revisions LPM events *must* be enabled, we can fall into a situation where too many events fire and we start receiving Overflow events.
Let's do what XHCI does and allocate a full page for the Event Ring, this will avoid any future issues.
--- drivers/usb/dwc3/core.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
drivers/usb/dwc3/core.h +1 -3
@@ -43,9 +43,7 @@#define DWC3_XHCI_RESOURCES_NUM 2#define DWC3_SCRATCHBUF_SIZE 4096/* each buffer is assumed to be 4KiB */ -#define DWC3_EVENT_SIZE 4/* bytes */ -#define DWC3_EVENT_MAX_NUM 64/* 2 events/endpoint */ -#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) +#define DWC3_EVENT_BUFFERS_SIZE 4096#define DWC3_EVENT_TYPE_MASK 0xfe#define DWC3_EVENT_TYPE_DEV 0
Patches currently in stable-queue which might be from [email protected] are
queue-4.9/usb-dummy-hcd-fix-bug-in-stop_activity-handle-ep0.patch queue-4.9/usb-dwc3-core-avoid-overflow-events.patch queue-4.9/usb-gadgetfs-fix-use-after-free-bug.patch queue-4.9/usb-gadget-composite-test-get_alt-presence-instead-of-set_alt.patch queue-4.9/usb-gadgetfs-restrict-upper-bound-on-device-configuration-size.patch queue-4.9/usb-gadgetfs-fix-checks-of-wtotallength-in-config-descriptors.patch queue-4.9/usb-gadgetfs-fix-unbounded-memory-allocation-bug.patch