GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
9 years agousb: dwc2: gadget: fix zero length packet transfers
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:59 +0000 (13:38 +0100)]
usb: dwc2: gadget: fix zero length packet transfers

According to programming guide, zero length packet should be
programmed on its own and should not be counted in DIEPTSIZ.PktCnt
with other packets.

For ep0, this is the zlp for DATA IN stage (if required) and not for
the STATUS stage.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: manage ep0 state in software
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:58 +0000 (13:38 +0100)]
usb: dwc2: gadget: manage ep0 state in software

Manage ep0 state in software to add handling of status OUT stage.
Just toggling hsotg->setup in s3c_hsotg_handle_outdone leaves it in
wrong state in 2-stage control transfers.
Moreover, ensure that for setup-packet s3c_hsotg_handle_outdone is
called either from SetupDone or OutDone but not both. Dwc2 ip v3.00a
generates both SetupDone and OutDone on setup packets.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: kill requests after disabling ep
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:57 +0000 (13:38 +0100)]
usb: dwc2: gadget: kill requests after disabling ep

kill_all_requests() can flush the fifo. Call it after disabling the
endpoint.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: consider all tx fifos
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:56 +0000 (13:38 +0100)]
usb: dwc2: gadget: consider all tx fifos

When matching tx fifo to endpoint, consider all fifos instead of
hard limiting to 8
Moreover, print error in case no fifo could be found.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: fix debug loop limits
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:55 +0000 (13:38 +0100)]
usb: dwc2: gadget: fix debug loop limits

< 15 check doesn't show debug information for endpoint 15.
It is possible to have less than 15 endpoints so use limit
provided by hardware configuration.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: remove unused members from hsotg_req
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:54 +0000 (13:38 +0100)]
usb: dwc2: gadget: remove unused members from hsotg_req

These members are only occupying space.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: dt-bindings: add dt binding info for dwc2 fifo resizing
Gregory Herrero [Fri, 9 Jan 2015 12:38:53 +0000 (13:38 +0100)]
Documentation: dt-bindings: add dt binding info for dwc2 fifo resizing

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: configure fifos from device tree
Gregory Herrero [Fri, 9 Jan 2015 12:38:52 +0000 (13:38 +0100)]
usb: dwc2: gadget: configure fifos from device tree

As fifo size can vary between SOCs, add possibility to configure
them from device tree. Fifo sizes used by the legacy driver will
be used If they are not provided by the device tree.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Reviewed-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: check interrupts for all endpoints
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:51 +0000 (13:38 +0100)]
usb: dwc2: gadget: check interrupts for all endpoints

Current code does not check endpoint 15 interrupt. Use number
of endpoint configured in hardware instead of the hardcoded value.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: add bi-directional endpoint support
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:50 +0000 (13:38 +0100)]
usb: dwc2: gadget: add bi-directional endpoint support

GHWCFG1 provides hardware configuration of each endpoint. Use
it to configure the endpoints instead of assuming all even
endpoint are OUT and all odd endpoints are IN.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: dt-bindings: add dt binding info for dwc2 g-use-dma
Gregory Herrero [Fri, 9 Jan 2015 12:38:49 +0000 (13:38 +0100)]
Documentation: dt-bindings: add dt binding info for dwc2 g-use-dma

Indicate if gadget driver must use dma for usb transfers.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: add device tree property to enable dma
Gregory Herrero [Fri, 9 Jan 2015 12:38:48 +0000 (13:38 +0100)]
usb: dwc2: gadget: add device tree property to enable dma

* Add an of specific function to parse device node properties.
* Enable dma usage only if device tree property 'g_use_dma' is present.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: don't erase gahbcfg register when enabling dma
Gregory Herrero [Fri, 9 Jan 2015 12:38:47 +0000 (13:38 +0100)]
usb: dwc2: gadget: don't erase gahbcfg register when enabling dma

Do a read-modify-write instead of only setting DMAEn bit.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: write correct value in ahbcfg register
Gregory Herrero [Fri, 9 Jan 2015 12:38:46 +0000 (13:38 +0100)]
usb: dwc2: gadget: write correct value in ahbcfg register

HBstLen is GAHBCFG[4:1]. Use GAHBCFG_HBSTLEN_SHIFT to write burst-
length at correct position.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: fix error path in dwc2_gadget_init
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:45 +0000 (13:38 +0100)]
usb: dwc2: gadget: fix error path in dwc2_gadget_init

In the error path, s3c_hsotg_phy_disable should be called after a
call to s3c_hsotg_phy_enable is made.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: don't embed ep0 buffers
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:44 +0000 (13:38 +0100)]
usb: dwc2: gadget: don't embed ep0 buffers

When using DMA, data of the previous setup packet can be read back
from cache because ep0 and ctrl buffers are embedded in struct s3c_hsotg.
Allocate buffers instead of embedding them.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Reviewed-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: don't process XferCompl on setup packet
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:43 +0000 (13:38 +0100)]
usb: dwc2: gadget: don't process XferCompl on setup packet

Only process DOEPINT.XferCompl on data packet as DOEPINTn.SetUp can
occur with or without DOEPINT.XferCompl. When DOEPINT.SetUp occurs
with DOEPINT.XferCompl, only DOEPINT.SetUp needs to be handled.

Moreover, ignore DOEPINT.XferCompl when it occurs with
DOEPINT.StupPktRcvd as driver needs to wait for DOEPINT.SetUp to
continue.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: mask fifo empty irq with dma
Mian Yousaf Kaukab [Fri, 9 Jan 2015 12:38:42 +0000 (13:38 +0100)]
usb: dwc2: gadget: mask fifo empty irq with dma

When using DMA, keep fifo empty interrupt disabled. Otherwise
core is flooded by interrupts.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: gadget: register gadget handle to the phy
Gregory Herrero [Fri, 9 Jan 2015 12:38:41 +0000 (13:38 +0100)]
usb: dwc2: gadget: register gadget handle to the phy

Bind peripheral controller to the phy on udc_start. Unbind on
udc_stop.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: mv_udc_core: delete pullup operation at .udc_start
Peter Chen [Mon, 12 Jan 2015 08:37:57 +0000 (16:37 +0800)]
usb: gadget: mv_udc_core: delete pullup operation at .udc_start

UDC core has already done it after .udc_start.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: pxa27x_udc: delete pullup operation at .udc_start and .udc_stop
Peter Chen [Mon, 12 Jan 2015 08:37:56 +0000 (16:37 +0800)]
usb: gadget: pxa27x_udc: delete pullup operation at .udc_start and .udc_stop

UDC core has already done it before .udc_stop and after .udc_start.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: pxa27x_udc: delete pullup operation at .udc_start and .udc_stop
Peter Chen [Mon, 12 Jan 2015 08:37:55 +0000 (16:37 +0800)]
usb: gadget: pxa27x_udc: delete pullup operation at .udc_start and .udc_stop

UDC core has already done it before .udc_stop and after .udc_start.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: f_fs: refactor and document __ffs_ep0_read_events better
Michal Nazarewicz [Wed, 10 Sep 2014 15:50:24 +0000 (17:50 +0200)]
usb: gadget: f_fs: refactor and document __ffs_ep0_read_events better

Instead of using variable length array, use a static length equal to
the size of the ffs->ev.types array.  This gets rid of a sparse warning:

drivers/usb/gadget/function/f_fs.c:401:44: warning:
Variable length array is used.

and makes it more explicit that the array has a very tight upper size
limit.  Also add some more documentation about the ev.types array and
how its size is limited and affects the rest of the code.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Rohith Seelaboyina <rseelaboyina@nvidia.com>
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agotools: ffs-aio-example: add missing wMaxPacketSize for HS descs
Robert Baldyga [Mon, 5 Jan 2015 09:44:44 +0000 (10:44 +0100)]
tools: ffs-aio-example: add missing wMaxPacketSize for HS descs

It's needed, to have more than 64 bytes of maxpacketsize.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: generic: add vbus support
Robert Jarzmik [Sat, 6 Dec 2014 21:05:15 +0000 (22:05 +0100)]
usb: phy: generic: add vbus support

Add support for vbus detection and power supply. This code is more or
less stolen from phy-gpio-vbus-usb.c, and aims at providing a detection
mechanism for VBus (ie. usb cable plug) based on a GPIO line, and a
power supply activation which draws current from the VBus.

[ balbi@ti.com : fix build break ]

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: nop: device tree documentation for vbus
Robert Jarzmik [Sat, 6 Dec 2014 21:05:14 +0000 (22:05 +0100)]
usb: phy: nop: device tree documentation for vbus

Enhance the phy documentation by adding 2 new optional bindings :
 - the vbus gpio, which detects usb insertion
 - the vbus regulator, which provides current drawn from the usb cable

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: generic: migrate to gpio_desc
Robert Jarzmik [Sat, 6 Dec 2014 21:05:13 +0000 (22:05 +0100)]
usb: phy: generic: migrate to gpio_desc

Change internal gpio handling from integer gpios into gpio
descriptors. This change only addresses the internal API and
device-tree/ACPI, while the legacy platform data remains integer space
based.

This change is only build compile tested, and very prone to error. I
leave this comment for now in the commit message so that this patch gets
some testing as I'm pretty sure it's buggy.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: atmel_usba: Cache INT_ENB register value
Boris Brezillon [Tue, 6 Jan 2015 13:47:02 +0000 (14:47 +0100)]
usb: gadget: atmel_usba: Cache INT_ENB register value

Cache INT_ENB register value in order to avoid uncached iomem access, and
thus improve access time to INT_ENB value.

Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: atmel_usba_udc: Mask status with enabled irqs
Boris Brezillon [Tue, 6 Jan 2015 13:47:01 +0000 (14:47 +0100)]
usb: atmel_usba_udc: Mask status with enabled irqs

Avoid interpreting useless status flags when we're not waiting for such
events by masking the status variable with the interrupt enabled register
value.

Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reported-by: Patrice VILCHEZ <patrice.vilchez@atmel.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: atmel_usba_udc: Add at91sam9g45 and at91sam9x5 errata handling
Boris Brezillon [Tue, 6 Jan 2015 13:46:59 +0000 (14:46 +0100)]
usb: atmel_usba_udc: Add at91sam9g45 and at91sam9x5 errata handling

at91sam9g45 and at91sam9x5 SoCs have an hardware bug forcing us to
generate a pulse on the BIAS signal on "USB end of reset” and
“USB end of resume" events.

Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reported-by: Patrice VILCHEZ <patrice.vilchez@atmel.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: atmel_usba_udc: Rework at91sam9rl errata handling
Boris Brezillon [Tue, 6 Jan 2015 13:46:58 +0000 (14:46 +0100)]
usb: atmel_usba_udc: Rework at91sam9rl errata handling

at91sam9rl SoC has an erratum forcing us to toggle the BIAS on USB
suspend/resume events.

This specific handling is only activated when CONFIG_ARCH_AT91SAM9RL is
set and this option is only set when building a non-DT kernel, which is
problematic since non-DT support for at91sam9rl SoC has been removed.

Rework the toggle_bias implementation to attach it to the "at91sam9rl-udc"
compatible string.

Add new compatible strings to avoid executing at91sam9rl erratum handling
on other SoCs.

Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: phy-fsl-usb: Remove some unused functions
Rickard Strandqvist [Thu, 1 Jan 2015 19:15:34 +0000 (20:15 +0100)]
usb: phy: phy-fsl-usb: Remove some unused functions

Removes some functions that are not used anywhere:
fsl_otg_tick_timer() view_ulpi()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: change some comments
Peter Chen [Tue, 30 Dec 2014 06:02:28 +0000 (14:02 +0800)]
usb: phy: change some comments

- Delete the OTG stuffs
- .set_suspend is for controller, not for A-device or B-device.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: phy-mxs-usb: do not depend on speed for disconnect notifier
Peter Chen [Wed, 24 Dec 2014 05:48:03 +0000 (13:48 +0800)]
usb: phy: phy-mxs-usb: do not depend on speed for disconnect notifier

For some user cases, like plug out and replug in usb device during
the system suspend, the speed negotiation will be error due to host
doesn't know the device's disconnection, and it still hopes the
high speed device, but the device backs to "powered" state which
its high speed termination is not enabled, the usb core calls
the PHY's disconnect notifier with "full speed", it will NOT
take effect at all.

If the usb core calls disconnect notifer, the port change must happen,
so it is safe to disable high speed disconenct detector, since
connect notifier will be called soon if the device is still connected
on the port, and we will enable high speed disconnect detector at that
time.

Acked-by: Li Jun <b47624@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: phy: phy-mxs-usb: add power down and disable wakeup for .shutdown
Peter Chen [Wed, 24 Dec 2014 05:48:02 +0000 (13:48 +0800)]
usb: phy: phy-mxs-usb: add power down and disable wakeup for .shutdown

When we shut down the PHY, we need to power down all PHY's functions
as well as disable wakeup, it is the opposite operation we do at .init.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agodrivers: usb: dwc2: remove 'force' parameter from kill_all_requests()
Robert Baldyga [Tue, 16 Dec 2014 10:51:44 +0000 (11:51 +0100)]
drivers: usb: dwc2: remove 'force' parameter from kill_all_requests()

This patch fixes in simpler way the bug described in [1] and [2]. It
looks like DWC2 is the only UDC driver that doesn't force usb requests
to complete in ep_disable() function. This causes described problem,
because we have no guarantee that all requests will be completed before
unbind of usb function.

To fix this problem we force all requests of disabled endpoint to complete.
Also currently running request is not handled. This allowed to simplify
code of kill_all_requests() function, because 'force' parameter is always
set to true, so we don't need it anymore.

In s3c_hsotg_rx_data() we change function used to print message when active
request is NULL from dev_warn() to dev_dbg(), because such situation is
harmless for driver and now it can take place during normal endpoint
disabling.

[1] https://lkml.org/lkml/2014/12/9/283
[2] https://lkml.org/lkml/2014/12/12/360

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Re-enable dynamic debug messages
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:51:02 +0000 (14:51 +0100)]
usb: gadget: udc: net2280: Re-enable dynamic debug messages

Some debug messages were not build due to unconditional #if 0.

These messages are very useful for debugging and the user can enable
them on demand via dynamic debug.

If they are not enabled the performance is not affected.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Move ASSERT_OUT_NAKING into out_flush
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:51:01 +0000 (14:51 +0100)]
usb: gadget: udc: net2280: Move ASSERT_OUT_NAKING into out_flush

ASSERT_OUT_NAKING was only called by out_flush and was hidden behind a
ifdef.

This patch moves the inline function into out_flush and remove the
ifdef. The user can decide to print the debug message or not via dynamic
printk

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Simplify scan_dma_completions
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:51:00 +0000 (14:51 +0100)]
usb: gadget: udc: net2280: Simplify scan_dma_completions

After fix superspeed dma_done was applied we can simplify the code by
removing the duplicated dma_done and letting the function check if there
are more completed dma transactions.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Declare allow_status_338x as inline
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:59 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Declare allow_status_338x as inline

The function is very simple, does not declare any variable and it is
called in the irq path.

The counterpart for net228x is already declared as inline.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove function resume_dma
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:58 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove function resume_dma

Function resume_dma is not used, remove it.

The reason the compiler did not catch this dead code is the inline
modifier.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Improve patching of defect 7374
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:57 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Improve patching of defect 7374

Once the defect 7374 is patched, there is no reason the keep reading the
idx scratch register.

Cache the content of the scratch idx register on device flag.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Clean function net2280_queue
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:56 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Clean function net2280_queue

Do not duplicate the code for the else branch of the condition.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Merge abort_dma for 228x and 338x
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:55 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Merge abort_dma for 228x and 338x

We can use the same function for both families of chips and also remove
the ep_stop_dma() function.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove function ep_stall
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:54 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove function ep_stall

irqs_superspeed calls ep_stall instead of set/clear_halt, due to a
workaround for SS seqnum. Create a function with the workaround and
call set/clear_halt instead.

This way we can compare the code of super/normal speed and it is easier
to follow the code.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove field is_halt
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:53 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove field is_halt

Field is_halt is never used by any function.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Code cleanout remove ep_stdrsp function
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:52 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Code cleanout remove ep_stdrsp function

ep_stdrsp was only called by handle_stat0_irqs_superspeed and with
always the same flags.

Remove the function and replace the call by the code inside the
function, since it is very simple once the dead code is removed.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove restart_dma inline function definition
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:51 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove restart_dma inline function definition

restart_dma is not used before it is declaration. Therefore we can
remove this definition.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove dma_started field
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:50 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove dma_started field

Remove dma_started field from net2280_ep structure, since it is not used
by any function.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove use_dma module parameter
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:49 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove use_dma module parameter

use_dma parameter was designed to enable the dma on the chip. It was
enabled by default.

It comes from the time when the dma was not reliable. Now it has been
working ok in production.

This patch removes this parameter.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove module parameter use_msi
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:48 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove module parameter use_msi

Parameter use_msi was used to enable msi irq on usb338x chips, it was
enabled by default.

There is no reason to prefer non-msi irq on usb338x, and it falls back
to non msi on error.

Therefore remove this option.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: remove full_speed module parameter
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:47 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: remove full_speed module parameter

This patch removes the full_speed parameter used force full-speed
operation.

It was designed exclusively for testing purposes, and there is no
reason to maintain this in a production kernel.

Reverts: 2f0760774711c957c395b31131b848043af98edf
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: net2280: Remove obsolete module param use_dma_chaining
Ricardo Ribalda Delgado [Fri, 28 Nov 2014 13:50:46 +0000 (14:50 +0100)]
usb: gadget: udc: net2280: Remove obsolete module param use_dma_chaining

use_dma_chaining module parameter was designed to avoid creating one irq
per package on a group of packages (with the help of the driver's flag
no_interrupt).

Unfortunately, when this parameter is enabled, the driver fails to work
on both net2280 and 3380 chips.

This patch removes this parameter, which was disabled by default.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: renesas_usbhs: fix platform init error message
Sergei Shtylyov [Tue, 4 Nov 2014 22:48:48 +0000 (01:48 +0300)]
usb: renesas_usbhs: fix platform init error message

There is a typo ("prove" instead of "probe") in the error message printed when
the platform initialization fails. Replace that word with more fitting "init".

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: cleanup on stack DECLARE_COMPLETIONs
Nicholas Mc Guire [Tue, 23 Dec 2014 18:50:14 +0000 (19:50 +0100)]
usb: gadget: cleanup on stack DECLARE_COMPLETIONs

fixups for incorrect use of DECLARE_COMPLETION. see also commit
6e9a4738 ("completions: lockdep annotate on stack completions")

patch is against 3.18.0 linux-next

This was only code reviewed and compile tested

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: f_uac1: update Class-Specific AudioControl Interface Header Descriptor
Xuebing Wang [Wed, 10 Dec 2014 08:28:15 +0000 (16:28 +0800)]
usb: gadget: f_uac1: update Class-Specific AudioControl Interface Header Descriptor

Update this according to USB Audio Class 1.0 spec. This fixes the Windows 7
detection issue.

Cc: Rafael Brune <mail@rbrune.de>
Signed-off-by: Xuebing Wang <xbing6@gmail.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(Fixed some code style issues)
Tested-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: f_uac1: configure endpoint before using it
Xuebing Wang [Wed, 10 Dec 2014 08:28:14 +0000 (16:28 +0800)]
usb: gadget: f_uac1: configure endpoint before using it

UAC1 forget to do it.

Signed-off-by: Xuebing Wang <xbing6@gmail.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: fix platform_no_drv_owner.cocci warnings
Julia Lawall [Wed, 26 Nov 2014 06:00:45 +0000 (07:00 +0100)]
usb: gadget: fix platform_no_drv_owner.cocci warnings

Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: remove bogus NULL check
Dan Carpenter [Tue, 25 Nov 2014 15:56:22 +0000 (18:56 +0300)]
usb: gadget: udc: remove bogus NULL check

"ep" isn't NULL here, and static checkers complain because we
dereferenced it on the previous line.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: clean up a printk
Dan Carpenter [Tue, 25 Nov 2014 15:55:57 +0000 (18:55 +0300)]
usb: gadget: udc: clean up a printk

We already know what "value" is, so there is no need to check.  It
puzzles static checkers to have the unneeded condition.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: platform: add generic PHY framework support
Yunzhi Li [Mon, 8 Dec 2014 09:46:26 +0000 (17:46 +0800)]
usb: dwc2: platform: add generic PHY framework support

Get PHY parameters from devicetree and power off usb PHY during
system suspend.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: uvc: configfs support in uvc function
Andrzej Pietrasiewicz [Wed, 10 Dec 2014 11:34:02 +0000 (12:34 +0100)]
usb: gadget: uvc: configfs support in uvc function

Add support for using the uvc function as a component of USB gadgets composed
with configfs.

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: uvc: verify descriptors presence
Andrzej Pietrasiewicz [Wed, 10 Dec 2014 11:34:01 +0000 (12:34 +0100)]
usb: gadget: uvc: verify descriptors presence

If the caller of uvc_alloc() does not provide enough
descriptors, binding the function should fail, so appropriate
code is returned from uvc_copy_descriptors().

uvc_function_bind() is modified accordingly to account for possible
errors from uvc_copy_descriptors().

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: f_uvc: rename a macro to avoid conflicts
Andrzej Pietrasiewicz [Wed, 10 Dec 2014 11:34:00 +0000 (12:34 +0100)]
usb: gadget: f_uvc: rename a macro to avoid conflicts

When configfs is integrated, CONFIGFS_ATTR_STRUCT and CONFIGFS_ATTR_OPS
macros should be used, but the latter expects that tere is a to_f_uvc_opts
function accepting a config_item, whereas the macro being changed
can be applied to a different type of argument.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: phy: nop: Fix the description of 'vcc-supply'
Fabio Estevam [Fri, 12 Dec 2014 15:08:26 +0000 (13:08 -0200)]
Documentation: usb: phy: nop: Fix the description of 'vcc-supply'

Since bd27fa44e13830d2b ("usb: phy: generic: Don't use regulator framework for
RESET line") we no longer model the reset line as a regulator supply, so
adapt the documentation accordingly.

Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: renesas_usbhs: kill dead code in usbhs_probe()
Sergei Shtylyov [Fri, 12 Dec 2014 19:53:18 +0000 (22:53 +0300)]
usb: renesas_usbhs: kill dead code in usbhs_probe()

usbhsc_drvcllbck_notify_hotplug() always returns 0, so it's rather pointless to
store and check its result for being < 0.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: hid: consistently use 2^n - 1 for max values
Andrzej Pietrasiewicz [Mon, 15 Dec 2014 12:50:05 +0000 (13:50 +0100)]
usb: gadget: hid: consistently use 2^n - 1 for max values

A maximum value which fits in 16 bits, unsigned, is 65535.

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: UVC function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:42 +0000 (14:56 +0100)]
Documentation: usb: UVC function testing

Summary of how to test UVC function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: UAC2 function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:41 +0000 (14:56 +0100)]
Documentation: usb: UAC2 function testing

Summary of how to test UAC2 function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: UAC1 function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:40 +0000 (14:56 +0100)]
Documentation: usb: UAC1 function testing

Summary of how to test UAC1 function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: SOURCESINK function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:39 +0000 (14:56 +0100)]
Documentation: usb: SOURCESINK function testing

Summary of how to test SOURCESINK function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: SERIAL function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:38 +0000 (14:56 +0100)]
Documentation: usb: SERIAL function testing

Summary of how to test SERIAL function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: RNDIS function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:37 +0000 (14:56 +0100)]
Documentation: usb: RNDIS function testing

Summary of how to test RNDIS function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: PHONET function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:36 +0000 (14:56 +0100)]
Documentation: usb: PHONET function testing

Summary of how to test PHONET function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: OBEX function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:35 +0000 (14:56 +0100)]
Documentation: usb: OBEX function testing

Summary of how to test OBEX function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: NCM function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:34 +0000 (14:56 +0100)]
Documentation: usb: NCM function testing

Summary of how to test NCM function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: MIDI function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:33 +0000 (14:56 +0100)]
Documentation: usb: MIDI function testing

Summary of how to test MIDI function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: MASS STORAGE function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:32 +0000 (14:56 +0100)]
Documentation: usb: MASS STORAGE function testing

Summary of how to test MASS STORAGE function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: LOOPBACK function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:31 +0000 (14:56 +0100)]
Documentation: usb: LOOPBACK function testing

Summary of how to test LOOPBACK function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: HID function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:30 +0000 (14:56 +0100)]
Documentation: usb: HID function testing

Summary of how to test HID function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: FFS function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:29 +0000 (14:56 +0100)]
Documentation: usb: FFS function testing

Summary of how to test FFS (FunctionFS) function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: EEM function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:28 +0000 (14:56 +0100)]
Documentation: usb: EEM function testing

Summary of how to test EEM function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: ECM subset function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:27 +0000 (14:56 +0100)]
Documentation: usb: ECM subset function testing

Summary of how to test ECM subset function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: ECM function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:26 +0000 (14:56 +0100)]
Documentation: usb: ECM function testing

Summary of how to test ECM function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: ACM function testing
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:25 +0000 (14:56 +0100)]
Documentation: usb: ACM function testing

The newly added file will be used to provide descriptions of how to test
the functions of USB gadgets.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoDocumentation: usb: gadget_serial: update generic serial setup instruction
Andrzej Pietrasiewicz [Tue, 16 Dec 2014 13:56:24 +0000 (14:56 +0100)]
Documentation: usb: gadget_serial: update generic serial setup instruction

Using module parameters to specify accepted Vendor ID, Product ID is
considered legacy now. Update the documentation to reflect it.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc3: Remove current_trb as it is unused
Amit Virdi [Fri, 19 Dec 2014 07:10:18 +0000 (12:40 +0530)]
usb: dwc3: Remove current_trb as it is unused

This field was introduced but never used. So, remove it.

Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc3: gadget: Remove redundant check
Amit Virdi [Fri, 19 Dec 2014 07:10:17 +0000 (12:40 +0530)]
usb: dwc3: gadget: Remove redundant check

dwc3_gadget_init_hw_endpoints calls dwc3_alloc_trb_pool only if epnum is not
equal to 0 or 1. Hence, rechecking it in the called function is redundant.

Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc2: Fixed a few typos in comments
Mickael Maison [Tue, 23 Dec 2014 16:39:45 +0000 (17:39 +0100)]
usb: dwc2: Fixed a few typos in comments

Fixed 3 typos in comments

Signed-off-by: Mickael Maison <mickael.maison@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: gadget: udc: s3c2410_udc.c: Remove some unused functions
Rickard Strandqvist [Sat, 20 Dec 2014 22:30:11 +0000 (23:30 +0100)]
usb: gadget: udc: s3c2410_udc.c: Remove some unused functions

Removes some functions that are not used anywhere:
s3c2410_udc_clear_ep_state() s3c2410_udc_set_ep0_sse_out()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agousb: dwc3: Fixed a typo in comments
Mickael Maison [Tue, 23 Dec 2014 16:34:43 +0000 (17:34 +0100)]
usb: dwc3: Fixed a typo in comments

Fixed a typo in comments

Signed-off-by: Mickael Maison <mickael.maison@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agolinux 3.19-rc4
Linus Torvalds [Sun, 11 Jan 2015 20:44:53 +0000 (12:44 -0800)]
linux 3.19-rc4

9 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 11 Jan 2015 20:44:10 +0000 (12:44 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Three small fixes from over the Christmas period, and wiring up the
  new execveat syscall for ARM"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error
  ARM: 8253/1: mm: use phys_addr_t type in map_lowmem() for kernel mem region
  ARM: 8249/1: mm: dump: don't skip regions
  ARM: wire up execveat syscall

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 11 Jan 2015 19:53:46 +0000 (11:53 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes: two vdso fixes, two kbuild fixes and a boot failure fix
  with certain odd memory mappings"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, vdso: Use asm volatile in __getcpu
  x86/build: Clean auto-generated processor feature files
  x86: Fix mkcapflags.sh bash-ism
  x86: Fix step size adjustment during initial memory mapping
  x86_64, vdso: Fix the vdso address randomization algorithm

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 11 Jan 2015 19:51:49 +0000 (11:51 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: group scheduling corner case fix, two deadline scheduler
  fixes, effective_load() overflow fix, nested sleep fix, 6144 CPUs
  system fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix RCU stall upon -ENOMEM in sched_create_group()
  sched/deadline: Avoid double-accounting in case of missed deadlines
  sched/deadline: Fix migration of SCHED_DEADLINE tasks
  sched: Fix odd values in effective_load() calculations
  sched, fanotify: Deal with nested sleeps
  sched: Fix KMALLOC_MAX_SIZE overflow during cpumask allocation

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 11 Jan 2015 19:47:45 +0000 (11:47 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, but also some kernel side fixes: uncore PMU
  driver fix, user regs sampling fix and an instruction decoder fix that
  unbreaks PEBS precise sampling"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
  perf/x86_64: Improve user regs sampling
  perf: Move task_pt_regs sampling into arch code
  x86: Fix off-by-one in instruction decoder
  perf hists browser: Fix segfault when showing callchain
  perf callchain: Free callchains when hist entries are deleted
  perf hists: Fix children sort key behavior
  perf diff: Fix to sort by baseline field by default
  perf list: Fix --raw-dump option
  perf probe: Fix crash in dwarf_getcfi_elf
  perf probe: Fix to fall back to find probe point in symbols
  perf callchain: Append callchains only when requested
  perf ui/tui: Print backtrace symbols when segfault occurs
  perf report: Show progress bar for output resorting

9 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 11 Jan 2015 19:46:31 +0000 (11:46 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "A liblockdep fix and a mutex_unlock() mutex-debugging fix"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  mutex: Always clear owner field upon mutex_unlock()
  tools/liblockdep: Fix debug_check thinko in mutex destroy

9 years agomm: fix corner case in anon_vma endless growing prevention
Konstantin Khlebnikov [Sun, 11 Jan 2015 13:54:06 +0000 (16:54 +0300)]
mm: fix corner case in anon_vma endless growing prevention

Fix for BUG_ON(anon_vma->degree) splashes in unlink_anon_vmas() ("kernel
BUG at mm/rmap.c:399!") caused by commit 7a3ef208e662 ("mm: prevent
endless growth of anon_vma hierarchy")

Anon_vma_clone() is usually called for a copy of source vma in
destination argument.  If source vma has anon_vma it should be already
in dst->anon_vma.  NULL in dst->anon_vma is used as a sign that it's
called from anon_vma_fork().  In this case anon_vma_clone() finds
anon_vma for reusing.

Vma_adjust() calls it differently and this breaks anon_vma reusing
logic: anon_vma_clone() links vma to old anon_vma and updates degree
counters but vma_adjust() overrides vma->anon_vma right after that.  As
a result final unlink_anon_vmas() decrements degree for wrong anon_vma.

This patch assigns ->anon_vma before calling anon_vma_clone().

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Reported-and-tested-by: Chris Clayton <chris2553@googlemail.com>
Reported-and-tested-by: Oded Gabbay <oded.gabbay@amd.com>
Reported-and-tested-by: Chih-Wei Huang <cwhuang@android-x86.org>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Daniel Forrest <dan.forrest@ssec.wisc.edu>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: stable@vger.kernel.org # to match back-porting of 7a3ef208e662
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agomm: Don't count the stack guard page towards RLIMIT_STACK
Linus Torvalds [Sun, 11 Jan 2015 19:33:57 +0000 (11:33 -0800)]
mm: Don't count the stack guard page towards RLIMIT_STACK

Commit fee7e49d4514 ("mm: propagate error from stack expansion even for
guard page") made sure that we return the error properly for stack
growth conditions.  It also theorized that counting the guard page
towards the stack limit might break something, but also said "Let's see
if anybody notices".

Somebody did notice.  Apparently android-x86 sets the stack limit very
close to the limit indeed, and including the guard page in the rlimit
check causes the android 'zygote' process problems.

So this adds the (fairly trivial) code to make the stack rlimit check be
against the actual real stack size, rather than the size of the vma that
includes the guard page.

Reported-and-tested-by: Chih-Wei Huang <cwhuang@android-x86.org>
Cc: Jay Foad <jay.foad@gmail.com>
Cc: stable@kernel.org # to match back-porting of fee7e49d4514
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge branch 'core/urgent' into locking/urgent, to collect all pending locking fixes
Ingo Molnar [Sun, 11 Jan 2015 08:18:05 +0000 (09:18 +0100)]
Merge branch 'core/urgent' into locking/urgent, to collect all pending locking fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>