linux-stable.git/drivers/usb/host, branch v3.10.41

usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM

2014-05-06T14:55:31+00:00

commit 01bb59ebffdec314da8da66266edf29529372f9b upstream.

When CONFIG_PCI and CONFIG_PM are not selected, xhci.c gets this
warning:
drivers/usb/host/xhci.c:409:13: warning: ‘xhci_msix_sync_irqs’ defined
but not used [-Wunused-function]

Instead of creating nested #ifdefs, this patch fixes it by defining the
xHCI PCI stubs as inline.

This warning has been in since 3.2 kernel and was
caused by commit 421aa841a134f6a743111cf44d0c6d3b45e3cf8c
"usb/xhci: hide MSI code behind PCI bars", but wasn't noticed
until 3.13 when a configuration with these options was tried

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

xhci: extend quirk for Renesas cards

2014-05-06T14:55:31+00:00

commit 6db249ebefc6bf5c39f35dfaacc046d8ad3ffd70 upstream.

After suspend another Renesas PCI-X USB 3.0 card doesn't work.
[root@fedora-20 ~]# lspci -vmnnd 1912:
Device:	03:00.0
Class:	USB controller [0c03]
Vendor:	Renesas Technology Corp. [1912]
Device:	uPD720202 USB 3.0 Host Controller [0015]
SVendor:	Renesas Technology Corp. [1912]
SDevice:	uPD720202 USB 3.0 Host Controller [0015]
Rev:	02
ProgIf:	30

This patch should be applied to stable kernel 3.14 that contain
the commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d
"xhci: Fix resume issues on Renesas chips in Samsung laptops"

Reported-and-tested-by: Anatoly Kharchenko 
Reference: http://redmine.russianfedora.pro/issues/1315
Signed-off-by: Igor Gnatenko 
Signed-off-by: Mathias Nyman 
Signed-off-by: Greg Kroah-Hartman

xhci: Prevent runtime pm from autosuspending during initialization

2014-05-06T14:55:31+00:00

commit bcffae7708eb8352f44dc510b326541fe43a02a4 upstream.

xHCI driver has its own pci probe function that will call usb_hcd_pci_probe
to register its usb-2 bus, and then continue to manually register the
usb-3 bus. usb_hcd_pci_probe does a pm_runtime_put_noidle at the end and
might thus trigger a runtime suspend before the usb-3 bus is ready.

Prevent the runtime suspend by increasing the usage count in the
beginning of xhci_pci_probe, and decrease it once the usb-3 bus is
ready.

xhci-platform driver is not using usb_hcd_pci_probe to set up
busses and should not need to have it's usage count increased during probe.

Signed-off-by: Mathias Nyman 
Acked-by: Dan Williams 
Acked-by: Alan Stern 
Signed-off-by: Sarah Sharp 
Signed-off-by: Greg Kroah-Hartman

xhci: Fix resume issues on Renesas chips in Samsung laptops

2014-03-31T16:58:14+00:00

commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d upstream.

Don Zickus  writes:

Some co-workers of mine bought Samsung laptops that had mostly usb3 ports.
Those ports did not resume correctly (the driver would timeout communicating
and fail).  This led to frustration as suspend/resume is a common use for
laptops.

Poking around, I applied the reset on resume quirk to this chipset and the
resume started working.  Reloading the xhci_hcd module had been the temporary
workaround.

Signed-off-by: Sarah Sharp 
Reported-by: Don Zickus 
Tested-by: Prarit Bhargava 
Signed-off-by: Greg Kroah-Hartman

usb: ehci: fix deadlock when threadirqs option is used

2014-03-07T05:30:10+00:00

commit a1227f3c1030e96ebc51d677d2f636268845c5fb upstream.

ehci_irq() and ehci_hrtimer_func() can deadlock on ehci->lock when
threadirqs option is used. To prevent the deadlock use
spin_lock_irqsave() in ehci_irq().

This change can be reverted when hrtimer callbacks become threaded.

Signed-off-by: Stanislaw Gruszka 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

usb: ehci: add freescale imx28 special write register method

2014-02-06T19:08:13+00:00

commit feffe09f510c475df082546815f9e4a573f6a233 upstream.

According to Freescale imx28 Errata, "ENGR119653 USB: ARM to USB
register error issue", All USB register write operations must
use the ARM SWP instruction. So, we implement a special ehci_write
for imx28.

Discussion for it at below:
http://marc.info/?l=linux-usb&m=137996395529294&w=2

Without this patcheset, imx28 works unstable at high AHB bus loading.
If the bus loading is not high, the imx28 usb can work well at the most
of time. There is a IC errata for this problem, usually, we consider
IC errata is a problem not a new feature, and this workaround is needed
for that, so we need to add them to stable tree 3.11+.

Cc: robert.hodaszi@digi.com
Signed-off-by: Peter Chen 
Acked-by: Alan Stern 
Signed-off-by: Marc Kleine-Budde 
Tested-by: Marc Kleine-Budde 
Signed-off-by: Greg Kroah-Hartman

usb: xhci: Check for XHCI_PLAT in xhci_cleanup_msix()

2014-02-06T19:08:13+00:00

commit 9005355af23856c55a5538c9024355785424821b upstream.

If CONFIG_PCI is enabled, make sure xhci_cleanup_msix()
doesn't try to free a bogus PCI IRQ or dereference an invalid
pci_dev when the xHCI device is actually a platform_device.

This patch should be backported to kernels as old as 3.9, that
contain the commit 52fb61250a7a132b0cfb9f4a1060a1f3c49e5a25
"xhci-plat: Don't enable legacy PCI interrupts."

Signed-off-by: Jack Pham 
Signed-off-by: Sarah Sharp 
Signed-off-by: Greg Kroah-Hartman

fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy

2013-10-05T14:13:11+00:00

commit ad1260e9fbf768d6bed227d9604ebee76a84aae3 upstream.

For controller versions greater than 1.6, setting ULPI_PHY_CLK_SEL
bit when USB_EN bit is already set causes instability issues with
PHY_CLK_VLD bit. So USB_EN is set only for IP controller version
below 1.6 before setting ULPI_PHY_CLK_SEL bit

Signed-off-by: Ramneek Mehresh 
Signed-off-by: Greg Kroah-Hartman

USB: UHCI: accept very late isochronous URBs

2013-10-05T14:13:11+00:00

commit bef073b067a7b1874a6b381e0035bb0516d71a77 upstream.

Commit 24f531371de1 (USB: EHCI: accept very late isochronous URBs)
changed the isochronous API provided by ehci-hcd.  URBs submitted too
late, so that the time slots for all their packets have already
expired, are no longer rejected outright.  Instead the submission is
accepted, and the URB completes normally with a -EXDEV error for each
packet.  This is what client drivers expect.

This patch implements the same policy in uhci-hcd.  It should be
applied to all kernels containing commit c44b225077bb (UHCI: implement
new semantics for URB_ISO_ASAP).

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: OHCI: accept very late isochronous URBs

2013-10-05T14:13:11+00:00

commit a8693424c751b8247ee19bd8b857f1d4f432b972 upstream.

Commit 24f531371de1 (USB: EHCI: accept very late isochronous URBs)
changed the isochronous API provided by ehci-hcd.  URBs submitted too
late, so that the time slots for all their packets have already
expired, are no longer rejected outright.  Instead the submission is
accepted, and the URB completes normally with a -EXDEV error for each
packet.  This is what client drivers expect.

This patch implements the same policy in ohci-hcd.  The change is more
complicated than it was in ehci-hcd, because ohci-hcd doesn't scan for
isochronous completions in the same way as ehci-hcd does.  Rather, it
depends on the hardware adding completed TDs to a "done queue".  Some
OHCI controller don't handle this properly when a TD's time slot has
already expired, so we have to avoid adding such TDs to the schedule
in the first place.  As a result, if the URB was submitted too late
then none of its TDs will get put on the schedule, so none of them
will end up on the done queue, so the driver will never realize that
the URB should be completed.

To solve this problem, the patch adds one to urb_priv->td_cnt for such
URBs, making it larger than urb_priv->length (td_cnt already gets set
to the number of TD's that had to be skipped because their slots have
expired).  Each time an URB is given back, the finish_urb() routine
looks to see if urb_priv->td_cnt for the next URB on the same endpoint
is marked in this way.  If so, it gives back the next URB right away.

This should be applied to all kernels containing commit 815fa7b91761
(USB: OHCI: fix logic for scheduling isochronous URBs).

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman