linux-stable.git/drivers/usb, branch v4.4.35

usb: gadget: u_ether: remove interrupt throttling

2016-11-18T09:48:35+00:00

commit fd9afd3cbe404998d732be6cc798f749597c5114 upstream.

According to Dave Miller "the networking stack has a
hard requirement that all SKBs which are transmitted
must have their completion signalled in a fininte
amount of time. This is because, until the SKB is
freed by the driver, it holds onto socket,
netfilter, and other subsystem resources."

In summary, this means that using TX IRQ throttling
for the networking gadgets is, at least, complex and
we should avoid it for the time being.

Reported-by: Ville Syrjälä 
Tested-by: Ville Syrjälä 
Suggested-by: David Miller 
Signed-off-by: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-acm: fix TIOCMIWAIT

2016-11-18T09:48:35+00:00

commit 18266403f3fe507f0246faa1d5432333a2f139ca upstream.

The TIOCMIWAIT implementation would return -EINVAL if any of the three
supported signals were included in the mask.

Instead of returning an error in case TIOCM_CTS is included, simply
drop the mask check completely, which is in accordance with how other
drivers implement this ioctl.

Fixes: 5a6a62bdb925 ("cdc-acm: add TIOCMIWAIT")
Signed-off-by: Johan Hovold 
Acked-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

usb: dwc3: Fix size used in dma_free_coherent()

2016-11-10T15:36:37+00:00

commit 51fbc7c06c8900370c6da5fc4a4685add8fa4fb0 upstream.

In commit 2abd9d5fa60f9 ("usb: dwc3: ep0: Add chained TRB support"), the
size of the memory allocated with 'dma_alloc_coherent()' has been modified
but the corresponding calls to 'dma_free_coherent()' have not been updated
accordingly.

This has been spotted with coccinelle, using the following script:
////////////////////
@r@
expression x0, x1, y0, y1, z0, z1, t0, t1, ret;
@@

*   ret = dma_alloc_coherent(x0, y0, z0, t0);
    ...
*   dma_free_coherent(x1, y1, ret, t1);

@script:python@
y0 << r.y0;
y1 << r.y1;

@@
if y1.find(y0) == -1:
 print "WARNING: sizes look different:  '%s'   vs   '%s'" % (y0, y1)
////////////////////

Fixes: 2abd9d5fa60f9 ("usb: dwc3: ep0: Add chained TRB support")

Signed-off-by: Christophe JAILLET 
Signed-off-by: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman

USB: serial: cp210x: fix tiocmget error handling

2016-11-10T15:36:34+00:00

commit de24e0a108bc48062e1c7acaa97014bce32a919f upstream.

The current tiocmget implementation would fail to report errors up the
stack and instead leaked a few bits from the stack as a mask of
modem-status flags.

Fixes: 39a66b8d22a3 ("[PATCH] USB: CP2101 Add support for flow control")
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

xhci: add restart quirk for Intel Wildcatpoint PCH

2016-11-10T15:36:34+00:00

commit 4c39135aa412d2f1381e43802523da110ca7855c upstream.

xHC in Wildcatpoint-LP PCH is similar to LynxPoint-LP and need the
same quirks to prevent machines from spurious restart while
shutting them down.

Reported-by: Hasan Mahmood 
Signed-off-by: Mathias Nyman 
Signed-off-by: Greg Kroah-Hartman

usb: increase ohci watchdog delay to 275 msec

2016-11-10T15:36:33+00:00

commit ed6d6f8f42d7302f6f9b6245f34927ec20d26c12 upstream.

Increase ohci watchout delay to 275 ms. Previous delay was 250 ms
with 20 ms of slack, after removing slack time some ohci controllers don't
respond in time. Logs from systems with controllers that have the
issue would show "HcDoneHead not written back; disabled"

Signed-off-by: Bryan Paluch 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

xhci: use default USB_RESUME_TIMEOUT when resuming ports.

2016-11-10T15:36:33+00:00

commit 7d3b016a6f5a0fa610dfd02b05654c08fa4ae514 upstream.

USB2 host inititated resume, and system suspend bus resume
need to use the same USB_RESUME_TIMEOUT as elsewhere.

This resolves a device disconnect issue at system resume seen
on Intel Braswell and Apollolake, but is in no way limited to
those platforms.

Signed-off-by: Mathias Nyman 
Signed-off-by: Greg Kroah-Hartman

USB: serial: ftdi_sio: add support for Infineon TriBoard TC2X7

2016-11-10T15:36:33+00:00

commit ca006f785fbfd7a5c901900bd3fe2b26e946a1ee upstream.

This adds support to ftdi_sio for the Infineon TriBoard TC2X7
engineering board for first-generation Aurix SoCs with Tricore CPUs.
Mere addition of the device IDs does the job.

Signed-off-by: Stefan Tauner 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: serial: fix potential NULL-dereference at probe

2016-11-10T15:36:33+00:00

commit 126d26f66d9890a69158812a6caa248c05359daa upstream.

Make sure we have at least one port before attempting to register a
console.

Currently, at least one driver binds to a "dummy" interface and requests
zero ports for it. Should such an interface also lack endpoints, we get
a NULL-deref during probe.

Fixes: e5b1e2062e05 ("USB: serial: make minor allocation dynamic")
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

usb: gadget: function: u_ether: don't starve tx request queue

2016-11-10T15:36:33+00:00

commit 6c83f77278f17a7679001027e9231291c20f0d8a upstream.

If we don't guarantee that we will always get an
interrupt at least when we're queueing our very last
request, we could fall into situation where we queue
every request with 'no_interrupt' set. This will
cause the link to get stuck.

The behavior above has been triggered with g_ether
and dwc3.

Reported-by: Ville Syrjälä 
Signed-off-by: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman