GitHub/moto-9609/android_kernel_motorola_exynos9610.git
10 years agousb: gadget: net2280: Fix NULL pointer dereference
Ricardo Ribalda Delgado [Thu, 15 May 2014 12:28:45 +0000 (14:28 +0200)]
usb: gadget: net2280: Fix NULL pointer dereference

When DEBUG is enabled driver->driver.name is accessed, but driver
can be NULL

[  174.411689] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[  174.429043] RIP: 0010:[<ffffffffa0131ca3>]  [<ffffffffa0131ca3>] net2280_stop+0xa3/0x100 [net2280]
[  174.457910] Call Trace:
[  174.459503]  [<ffffffffa00dd92a>] usb_gadget_remove_driver+0x5a/0xb0 [udc_core]
[  174.462693]  [<ffffffffa00ddd84>] usb_del_gadget_udc+0xb4/0x110 [udc_core]
[  174.464316]  [<ffffffffa012e2bf>] net2280_remove+0x2f/0x1c0 [net2280]

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: uvc: Set the vb2 queue timestamp flags
Laurent Pinchart [Sun, 23 Mar 2014 15:19:50 +0000 (16:19 +0100)]
usb: gadget: uvc: Set the vb2 queue timestamp flags

The vb2 queue timestamp_flags field must be set by drivers, as enforced
by a WARN_ON in vb2_queue_init. The UVC gadget driver failed to do so.
This resulted in the following warning.

[    2.104371] g_webcam gadget: uvc_function_bind
[    2.105567] ------------[ cut here ]------------
[    2.105567] ------------[ cut here ]------------
[    2.106779] WARNING: CPU: 0 PID: 1 at drivers/media/v4l2-core/videobuf2-core.c:2207 vb2_queue_init+0xa3/0x113()

Fix it.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: uvc: Set the V4L2 buffer field to V4L2_FIELD_NONE
Laurent Pinchart [Sun, 23 Mar 2014 15:25:09 +0000 (16:25 +0100)]
usb: gadget: uvc: Set the V4L2 buffer field to V4L2_FIELD_NONE

The UVC gadget driver doesn't support interlaced video but left the
buffer field uninitialized. Set it to V4L2_FIELD_NONE.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: uvc: Switch to monotonic clock for buffer timestamps
Laurent Pinchart [Sun, 23 Mar 2014 15:25:09 +0000 (16:25 +0100)]
usb: gadget: uvc: Switch to monotonic clock for buffer timestamps

The wall time clock isn't useful for applications as it can jump around
due to time adjustement. Switch to the monotonic clock.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: Add SMSC USB334x PHY ID
Liviu Dudau [Wed, 14 May 2014 20:32:39 +0000 (21:32 +0100)]
usb: phy: Add SMSC USB334x PHY ID

adding new device id for SMSC USB334x devices.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: f_uac2: don't queue new requests when shutting down
Andrzej Pietrasiewicz [Thu, 15 May 2014 11:43:50 +0000 (13:43 +0200)]
usb: gadget: f_uac2: don't queue new requests when shutting down

In some circumstances when g_audio is being unloaded there happens
an endless loop in udc driver. It has happend on a board with
s3c-hsotg. If there are requests in endpoint's queue, they are completed
in a loop. But completing them might cause appending new requests
to the queue. This patch causes agdev_iso_complete() to return immediately
if request's status is -ESHUTDOWN. If it does not return immediately,
then although the current request is removed from the queue, a new one
is appended to the queue, so the above mentioned loop cannot end.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: convert to pcim_enable_device()
Andy Shevchenko [Thu, 15 May 2014 12:53:33 +0000 (15:53 +0300)]
usb: dwc3: convert to pcim_enable_device()

This fixes a bug when dwc3_pci_register_phys() fails and leaves device enabled.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: no need to initialize ret variable
Andy Shevchenko [Thu, 15 May 2014 12:53:32 +0000 (15:53 +0300)]
usb: dwc3: no need to initialize ret variable

First usage of ret variable will re-write initial value. Thus, there is no need
to initialize it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: configfs: OS Extended Properties descriptors support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:28 +0000 (14:06 +0200)]
usb: gadget: configfs: OS Extended Properties descriptors support

Add handling of OS Extended Properties descriptors from configfs interface.
One kind of "OS Descriptors" are "Extended Properties" descriptors, which
need to be specified per interface or per group of interfaces described
by an IAD. This patch adds support for creating subdirectories
in interface.<n> directory located in the function's directory.
Names of subdirectories created become names of properties.
Each property contains two attributes: "type" and "data".
The type can be a numeric value 1..7 while data is a blob interpreted
depending on the type specified.
The types are:
1 - unicode string
2 - unicode string with environment variables
3 - binary
4 - little-endian 32-bit
5 - big-endian 32-bit
6 - unicode string with a symbolic link
7 - multiple unicode strings

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: f_rndis: OS Descriptors configfs support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:27 +0000 (14:06 +0200)]
usb: gadget: f_rndis: OS Descriptors configfs support

Added handling of OS Descriptors support for f_rndis.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: configfs: OS Extended Compatibility descriptors support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:26 +0000 (14:06 +0200)]
usb: gadget: configfs: OS Extended Compatibility descriptors support

Add handling of OS Extended Compatibility descriptors from configfs interface.
Hosts which expect the "OS Descriptors" ask only for configurations @ index 0,
but linux-based USB devices can provide more than one configuration.
This patch adds marking one of gadget's configurations the configuration
to be reported at index 0, regardless of the actual sequence of usb_add_config
invocations used for adding the configurations. The configuration is selected
by creating a symbolic link pointing to it from the "os_desc" directory
located at the top of a gadget's directory hierarchy.

One kind of "OS Descriptors" are "Extended Compatibility Descriptors",
which need to be specified per interface. This patch adds interface.<n>
directory in function's configfs directory to represent each interface
defined by the function. Each interface's directory contains two attributes:
"compatible_id" and "sub_compatible_id", which represent 8-byte
strings to be reported to the host as the "Compatible ID" and "Sub Compatible
ID".

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: configfs: OS String support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:25 +0000 (14:06 +0200)]
usb: gadget: configfs: OS String support

Add handling of OS String extension from the configfs interface.
A directory "os_desc" is added at the top level of a gadget's
directories hierarchy. In the "os_desc" directory there are
three attributes: "use", "b_vendor_code" and "qw_sign".
If "use" contains "0" the OS string is not reported to the host.
"b_vendor_code" contains a one-byte value which is used
for custom per-device and per-interface requests.
"qw_sign" contains an identifier to be reported as the "OS String"
proper.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: f_rndis: OS descriptors support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:24 +0000 (14:06 +0200)]
usb: gadget: f_rndis: OS descriptors support

In order for usb functions to expose OS descriptors they
need to be made aware of OS descriptors. This involves
extending the "options" structure and setting up
appropriate associations.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: OS Feature Descriptors support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:23 +0000 (14:06 +0200)]
usb: gadget: OS Feature Descriptors support

There is a custom (non-USB IF) extension to the USB standard:

http://msdn.microsoft.com/library/windows/hardware/gg463182

They grant permission to use the specification - there is
"Microsoft OS Descriptor Specification License Agreement"
under the link mentioned above, and its Section 2 "Grant
of License", letter (b) reads:

"Patent license. Microsoft hereby grants to You a nonexclusive,
royalty-free, nontransferable, worldwide license under Microsoft’s
patents embodied solely within the Specification and that are owned
or licensable by Microsoft to make, use, import, offer to sell,
sell and distribute directly or indirectly to Your Licensees Your
Implementation. You may sublicense this patent license to Your
Licensees under the same terms and conditions."

The said extension is maintained by Microsoft for Microsoft.

Yet it is fairly common for various devices to use it, and a
popular proprietary operating system expects devices to provide
"OS descriptors", so Linux-based USB gadgets whishing to be able
to talk to a variety of operating systems should be able to provide
the "OS descriptors".

This patch adds optional support for gadgets whishing to expose
the so called "OS Feature Descriptors", that is "Extended Compatibility ID"
and "Extended Properties".

Hosts which do request "OS descriptors" from gadgets do so during
the enumeration phase and before the configuration is set with
SET_CONFIGURATION. What is more, those hosts never ask for configurations
at indices other than 0. Therefore, gadgets whishing to provide
"OS descriptors" must designate one configuration to be used with
this kind of hosts - this is what os_desc_config is added for in
struct usb_composite_dev. There is an additional advantage to it:
if a gadget provides "OS descriptors" and designates one configuration
to be used with such non-USB-compliant hosts it can invoke
"usb_add_config" in any order because the designated configuration
will be reported to be at index 0 anyway.

This patch also adds handling vendor-specific requests addressed
at device or interface and related to handling "OS descriptors".

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: OS String support
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:22 +0000 (14:06 +0200)]
usb: gadget: OS String support

There is a custom (non-USB IF) extension to the USB standard:

http://msdn.microsoft.com/library/windows/hardware/gg463182

They grant permission to use the specification - there is
"Microsoft OS Descriptor Specification License Agreement"
under the link mentioned above, and its Section 2 "Grant
of License", letter (b) reads:

"Patent license. Microsoft hereby grants to You a nonexclusive,
royalty-free, nontransferable, worldwide license under Microsoft’s
patents embodied solely within the Specification and that are owned
or licensable by Microsoft to make, use, import, offer to sell,
sell and distribute directly or indirectly to Your Licensees Your
Implementation. You may sublicense this patent license to Your
Licensees under the same terms and conditions."

The said extension is maintained by Microsoft for Microsoft.

Yet it is fairly common for various devices to use it, and a
popular proprietary operating system expects devices to provide
"OS descriptors", so Linux-based USB gadgets whishing to be able
to talk to a variety of operating systems should be able to provide
the "OS descriptors".

This patch adds optional support for gadgets whishing to expose
the so called "OS String" under index 0xEE of language 0.
The contents of the string is generated based on the qw_sign
array and b_vendor_code.

Interested gadgets need to set the cdev->use_os_string flag,
fill cdev->qw_sign with appropriate values and fill cdev->b_vendor_code
with a value of their choice.

This patch does not however implement responding to any vendor-specific
USB requests.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: FunctionFS: share VLA macros with all usb gadget files
Andrzej Pietrasiewicz [Thu, 8 May 2014 12:06:21 +0000 (14:06 +0200)]
usb: gadget: FunctionFS: share VLA macros with all usb gadget files

Variable Length Array macros allow portable (compilable with both gcc
and clang) way of allocating a number of structures using a single
memory chunk. They can be useful for files other than f_fs.c,
so move them to a header file.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: change devm_ioremap() to devm_ioremap_resource()
Dan Carpenter [Wed, 14 May 2014 13:54:47 +0000 (16:54 +0300)]
usb: phy: msm: change devm_ioremap() to devm_ioremap_resource()

There are several issues here:
1) platform_get_resource() can return NULL and that wasn't handled.
2) We should request the memory before we remap it, and
   devm_ioremap_resource() does that.
3) devm_ioremap() returns a NULL but we were checking for IS_ERR().

Fixes: 6b99c68ec1f9 ('usb: phy: msm: Migrate to Managed Device Resource allocation')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: reset controller is mandatory now
Arnd Bergmann [Tue, 13 May 2014 19:46:52 +0000 (21:46 +0200)]
usb: phy: msm: reset controller is mandatory now

Commit a27345434134 "usb: phy: msm: Use reset framework for LINK
and PHY resets" introduced a mandatory call to reset_control_get
into the msm usb phy driver, which means we have to add a Kconfig
dependency on the API to avoid this build error:

phy/phy-msm-usb.c: In function 'msm_otg_read_dt':
phy/phy-msm-usb.c:1461:2: error: implicit declaration of function 'devm_reset_control_get' [-Werror=implicit-function-declaration]
  motg->link_rst = devm_reset_control_get(&pdev->dev, "link");
  ^

Since the usb-ehci-msm driver currently selects the OTG driver,
we could still get a broken dependency here. To solve that,
this patch also removes the 'select', which turns out to be
unnecessary.

Reviewed-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: omap2plus bus glue needs USB host support
Arnd Bergmann [Thu, 8 May 2014 13:52:16 +0000 (15:52 +0200)]
usb: musb: omap2plus bus glue needs USB host support

The musb/omap2430.c bus glue driver calls usb_hcd_poll_rh_status,
which is only available if CONFIG_USB is also set, i.e. we
are building USB host mode and not just endpoint mode.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: tusb-dma can't be built-in if tusb is not
Arnd Bergmann [Thu, 8 May 2014 13:52:15 +0000 (15:52 +0200)]
usb: musb: tusb-dma can't be built-in if tusb is not

A configuration with CONFIG_USB_MUSB_HDRC=y, CONFIG_USB_TUSB_OMAP_DMA=y
and CONFIG_USB_MUSB_TUSB6010=m causes a link failure because of the
dependency on the tusb_get_revision symbol:

(.text+0x154ce8): undefined reference to `tusb_get_revision'

This patch ensures that either MUSB_HDRC and MUSB_TUSB6010 are
both modules or both built-in, which are the valid configurations.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: s3c2410_udc: don't use pr_debug return value
Arnd Bergmann [Thu, 8 May 2014 13:52:14 +0000 (15:52 +0200)]
usb: gadget: s3c2410_udc: don't use pr_debug return value

pr_debug() may be defined as "do { } while (0)" in some configurations,
which means one cannot rely on the return value to be available.

In the dprintk function in this driver, we can work around the
resulting build error trivially by returning the length that
this function already knows and ignoring the return value of
pr_debug.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: unconditionally use GFP_ATOMIC in gr_queue_ext()
Alexey Khoroshilov [Wed, 7 May 2014 20:26:52 +0000 (00:26 +0400)]
usb: gadget: gr_udc: unconditionally use GFP_ATOMIC in gr_queue_ext()

As far as gr_queue() is called with spinlock held,
we have to pass GFP_ATOMIC regardless of gfp argument.

Found by Linux Driver Verification project (linuxtesting.org).

Acked-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: tcm_usb_gadget: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:50:27 +0000 (15:50 +0900)]
usb: gadget: tcm_usb_gadget: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: r8a66597-udc: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:49:10 +0000 (15:49 +0900)]
usb: gadget: r8a66597-udc: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: mv_u3d_core: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:48:13 +0000 (15:48 +0900)]
usb: gadget: mv_u3d_core: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: m66592-udc: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:46:23 +0000 (15:46 +0900)]
usb: gadget: m66592-udc: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: fusb300_udc: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:44:59 +0000 (15:44 +0900)]
usb: gadget: fusb300_udc: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: fsl_udc_core: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:43:57 +0000 (15:43 +0900)]
usb: gadget: fsl_udc_core: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: fotg210-udc: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:42:21 +0000 (15:42 +0900)]
usb: gadget: fotg210-udc: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: f_uac2: remove unnecessary OOM messages
Jingoo Han [Wed, 7 May 2014 06:41:16 +0000 (15:41 +0900)]
usb: gadget: f_uac2: remove unnecessary OOM messages

The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: atmel_usba: always test udc->driver
Alexandre Belloni [Tue, 6 May 2014 15:16:07 +0000 (17:16 +0200)]
usb: gadget: atmel_usba: always test udc->driver

Found using smatch: drivers/usb/gadget/atmel_usba_udc.c:1689 usba_udc_irq()
error: we previously assumed 'udc->driver' could be null (see line 1636)

Always test udc->driver before using its members.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: configfs: fix typo
Peter Chen [Sun, 4 May 2014 23:39:34 +0000 (07:39 +0800)]
usb: gadget: configfs: fix typo

%s/atleast/at least

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: tusb: remove dead code
Paul Bolle [Sun, 4 May 2014 08:57:30 +0000 (10:57 +0200)]
usb: musb: tusb: remove dead code

musb_in_tusb() is always set to 0, because CONFIG_USB_TUSB6010 is never
set (it should have been CONFIG_USB_MUSB_TUSB6010). But musb_in_tusb()
is unused anyway, so remove a few lines of dead code.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: Kconfig: Select the DMA driver if DMA mode of MUSB is enabled
George Cherian [Fri, 2 May 2014 08:11:00 +0000 (13:41 +0530)]
usb: musb: Kconfig: Select the DMA driver if DMA mode of MUSB is enabled

AM335x MUSB supports both PIO and DMA mode. When DMA mode is
selected users need to explicitly enable the DMA driver. To avoid the
extra configuration select the DMA driver if DMA mode is set for AM335x MUSB.

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agotools: usb: aio example applications
Robert Baldyga [Tue, 11 Feb 2014 10:43:03 +0000 (11:43 +0100)]
tools: usb: aio example applications

This patch adds two example applications showing usage of Asynchronous I/O API
of FunctionFS. First one (aio_simple) is simple example of bidirectional data
transfer. Second one (aio_multibuff) shows multi-buffer data transfer, which
may to be used in high performance applications.

Both examples contains userspace applications for device and for host.
It needs libaio library on the device, and libusb library on host.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agodocumentation: docbook: document process of writing an musb glue layer
Apelete Seketeli [Mon, 14 Apr 2014 20:12:56 +0000 (22:12 +0200)]
documentation: docbook: document process of writing an musb glue layer

Document the process of writing an musb glue layer by taking the
Ingenic JZ4740 glue layer as an example, as it seems more simple than
most glue layers due to the basic feature set of the JZ4740 USB device
controller.

Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: udc-core: set gadget state as not attached after unloading module
Peter Chen [Tue, 29 Apr 2014 05:26:29 +0000 (13:26 +0800)]
usb: udc-core: set gadget state as not attached after unloading module

Set gadget state as "not attached" after unloading gadget module, or
its state will be unchanged after we unload gadget module.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: set gadget state as configured
Peter Chen [Tue, 29 Apr 2014 05:26:28 +0000 (13:26 +0800)]
usb: gadget: set gadget state as configured

Set gadget device state as configurated after set configuration
has finished.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: enable build on other architectures
Felipe Balbi [Wed, 30 Apr 2014 16:36:03 +0000 (11:36 -0500)]
usb: phy: msm: enable build on other architectures

By adding COMPILE_TEST to the list of dependencies
we can build test this driver on all other architectures
which is very valuable for maintainers applying patches
and to find silly mistakes during development.

Reviewed-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: switch over to writel()
Felipe Balbi [Wed, 30 Apr 2014 16:35:22 +0000 (11:35 -0500)]
usb: phy: msm: switch over to writel()

Remove that single instance of writel_relaxed()
call which is only available on ARM architecture.

This will let us build test this driver on all
different architectures.

Reviewed-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: cast to enum msm_usb_phy_type
Felipe Balbi [Wed, 30 Apr 2014 16:33:04 +0000 (11:33 -0500)]
usb: phy: msm: cast to enum msm_usb_phy_type

this solves the following build warning found when
running compile tests.

drivers/usb/phy/phy-msm-usb.c: In function ‘msm_otg_read_dt’:
drivers/usb/phy/phy-msm-usb.c:1459:20: warning: cast from pointer \
to integer of different size [-Wpointer-to-int-cast]
  pdata->phy_type = (int) id->data;
                    ^
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Use usb_add_phy_dev() to register device
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:23 +0000 (16:34 +0300)]
usb: phy: msm: Use usb_add_phy_dev() to register device

There could be more than one USB2.0 PHY's on the platform.
This will allow all of them to be registered successfully.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Vote for corner of VDD CX instead of voltage of VDD CX
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:22 +0000 (16:34 +0300)]
usb: phy: msm: Vote for corner of VDD CX instead of voltage of VDD CX

New platform uses RBCPR hardware feature, with that voting for
absolute voltage of VDD CX is not required. Hence vote for corner of
VDD CX which uses nominal corner voltage on VDD CX.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Cc: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Handle disconnect events
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:21 +0000 (16:34 +0300)]
usb: phy: msm: Handle disconnect events

Put the transceiver in non-driving mode. Otherwise host
may not detect soft-disconnection.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Select secondary PHY via TCSR
Tim Bird [Mon, 28 Apr 2014 13:34:20 +0000 (16:34 +0300)]
usb: phy: msm: Select secondary PHY via TCSR

Select the secondary PHY using the TCSR register, if phy-num=1
in the DTS (or phy_number is set in the platform data).  The
SOC has 2 PHYs which can be used with the OTG port, and this
code allows configuring the correct one.

Note: This resolves the problem I was seeing where I couldn't
get the USB driver working at all on a dragonboard, from cold
boot.  This patch depends on patch 5/14 from Ivan's msm USB
patch set.  It does not use DT for the register address, as
there's no evidence that this address changes between SoC
versions.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Fix PTS definitions for MSM USB controller
Tim Bird [Mon, 28 Apr 2014 13:34:19 +0000 (16:34 +0300)]
usb: phy: msm: Fix PTS definitions for MSM USB controller

Fix the value used for Parallel Transceiver Select (PTS) for the MSM USB
controller.  This is a standard chipidea PORTSC definition, where
a PHY_TYPE of 10b (<<30) is ULPI and 11b (<<30) is SERIAL.
Fix the definitions and use them correctly in the driver code.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Correct USB PHY Reset sequence for newer platform
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:18 +0000 (16:34 +0300)]
usb: phy: msm: Correct USB PHY Reset sequence for newer platform

On few legacy platforms, USB PHY is having dedicated reset clk.
It is used to reset USB PHY after putting USB PHY into low power
mode and for calibration of USB PHY. Putting USB PHY into low
power mode is causing ulpi read/write timeout as expected. USB PHY
reset clk is not available on newer platform.

For 28nm PHY, reset USB PHY after resetting USB LINK.
Also reset USB PHY using USB_PHY_PON bit with USB_OTG_HS_PHY_CTRL
register after programming USB PHY Override registers as suggested
with hardware programming guidelines.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Cc: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Add support for secondary PHY control
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:17 +0000 (16:34 +0300)]
usb: phy: msm: Add support for secondary PHY control

Allow support to use 2nd HSPHY with USB2 Core.
Some platforms may have configuration to allow USB controller
work with any of the two HSPHYs present. By default driver
configures USB core to use primary HSPHY. Add support to allow
user select 2nd HSPHY using DT parameter.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Cc: Manu Gautam <mgautam@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Use reset framework for LINK and PHY resets
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:16 +0000 (16:34 +0300)]
usb: phy: msm: Use reset framework for LINK and PHY resets

Using reset framework eliminate need of platform specific
callbacks and enable reset lines to be specified in DT files.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Add device tree support and binding information
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:15 +0000 (16:34 +0300)]
usb: phy: msm: Add device tree support and binding information

Allows controller to be specified via device tree.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Properly check result from platform_get_irq()
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:14 +0000 (16:34 +0300)]
usb: phy: msm: Properly check result from platform_get_irq()

Function return negative code on error.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Remove HSUSB prefix from regulator names
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:13 +0000 (16:34 +0300)]
usb: phy: msm: Remove HSUSB prefix from regulator names

Prefix did not bring any useful information. Currently none
of the MSM platforms define these regulators, so it is safe
to rename them.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Remove unused pclk_src_name
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:12 +0000 (16:34 +0300)]
usb: phy: msm: Remove unused pclk_src_name

There are no references to 'pclk_src_name' in plaform code,
so it is unused.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Replace custom enum usb_mode_type with enum usb_dr_mode
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:11 +0000 (16:34 +0300)]
usb: phy: msm: Replace custom enum usb_mode_type with enum usb_dr_mode

Use enum usb_dr_mode and drop default usb_dr_mode from platform data.

USB DT bindings states: dr_mode: "...In case this attribute isn't
passed via DT, USB DRD controllers should default to OTG...",
so remove redundand field.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Fix checkpatch.pl warnings
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:10 +0000 (16:34 +0300)]
usb: phy: msm: Fix checkpatch.pl warnings

This fixes following:

WARNING: quoted string split across lines
WARNING: Prefer seq_puts to seq_printf

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Remove unnecessarily check for valid regulators.
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:09 +0000 (16:34 +0300)]
usb: phy: msm: Remove unnecessarily check for valid regulators.

Whether regulators are available or not is checked at driver
probe. If they are not available driver will refuse to load,
so no need to check them again.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Migrate to Managed Device Resource allocation
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:08 +0000 (16:34 +0300)]
usb: phy: msm: Migrate to Managed Device Resource allocation

Move memory, regulators, clocks and irq allocation to
devm_* variants. Properly check for valid clk handles.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Enable deferred driver probing
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:07 +0000 (16:34 +0300)]
usb: phy: msm: Enable deferred driver probing

Using platform_driver_probe() prevent driver from requesting
probe deferral. Fix this.

While at that, also switch to module_platform_driver() and
remove __init annotation from probe().

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Move global regulators variables to driver state
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:06 +0000 (16:34 +0300)]
usb: phy: msm: Move global regulators variables to driver state

Eliminating global variables allows driver to handle multiple
device instances.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: msm: Make driver selectable on ARCH_QCOM
Ivan T. Ivanov [Mon, 28 Apr 2014 13:34:04 +0000 (16:34 +0300)]
usb: phy: msm: Make driver selectable on ARCH_QCOM

Controller could be found on APQ and MSM platforms,
make configuration description more generic.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: gadget: pretty print Generic CMDs
Felipe Balbi [Fri, 25 Apr 2014 19:14:14 +0000 (14:14 -0500)]
usb: dwc3: gadget: pretty print Generic CMDs

this makes it slightly easier to read generic CMD
logs. It also helps make sure we're sending proper
parameters for each command.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: gadget: pretty print link states
Felipe Balbi [Tue, 22 Apr 2014 18:20:12 +0000 (13:20 -0500)]
usb: dwc3: gadget: pretty print link states

this makes it slightly easier to read link state
change interrupt logs.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: gadget: print both cmd string and number
Felipe Balbi [Fri, 25 Apr 2014 19:10:02 +0000 (14:10 -0500)]
usb: dwc3: gadget: print both cmd string and number

That way it's easy for humans looking at dmesg
and humans(?) looking at Databooks.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: exynos: Make provision for vdd regulators
Vivek Gautam [Mon, 21 Apr 2014 12:16:44 +0000 (17:46 +0530)]
usb: dwc3: exynos: Make provision for vdd regulators

Facilitate getting required 3.3V and 1.0V VDD supply for
DWC3 controller on Exynos.

With patches for regulators' nodes merged in 3.15:
c8c253f ARM: dts: Add regulator entries to smdk5420
275dcd2 ARM: dts: add max77686 pmic node for smdk5250,

certain perripherals will now need to ensure that,
they request VDD regulators in their drivers, and enable
them so as to make them working.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Anton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: dsps: compile suspend/resume only with PM_SLEEP
Wolfram Sang [Thu, 17 Apr 2014 08:20:32 +0000 (10:20 +0200)]
usb: musb: dsps: compile suspend/resume only with PM_SLEEP

Depending on PM is not enough, because only PM_RUNTIME could be
selected. Fixes:

drivers/usb/musb/musb_dsps.c:703:12: warning: 'dsps_suspend' defined but not used [-Wunused-function]
drivers/usb/musb/musb_dsps.c:721:12: warning: 'dsps_resume' defined but not used [-Wunused-function]

Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: f_subset: replace PTR_RET with PTR_ERR_OR_ZERO
Duan Jiong [Fri, 11 Apr 2014 10:05:13 +0000 (18:05 +0800)]
usb: gadget: f_subset: replace PTR_RET with PTR_ERR_OR_ZERO

PTR_RET is deprecated. Do not recommend its usage anymore.
Use PTR_ERR_OR_ZERO instead.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: add glue layer dependencies
Jean Delvare [Tue, 8 Apr 2014 08:42:40 +0000 (10:42 +0200)]
usb: dwc3: add glue layer dependencies

Glue layers for the DWC3 driver only make sense on specific platforms.
Add dependencies so that they are not built where they aren't needed.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: dsps: handle babble interrupts
Daniel Mack [Wed, 2 Apr 2014 11:58:29 +0000 (13:58 +0200)]
usb: musb: dsps: handle babble interrupts

When the dsps isr sees a babble error, pass it down to the core for
fixup. Also, provide a .reset hook so the core can call us back.

A babble interrupt error occured when a USB mass storage device
("CHIPSBNK v3.3.9.1", 1e3d:2093) was disconnected from a AM33xx host.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-by: Thomas Mellenthin <mellenthin@teufel.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: add a work_struct to recover from babble errors
Daniel Mack [Wed, 2 Apr 2014 11:58:28 +0000 (13:58 +0200)]
usb: musb: add a work_struct to recover from babble errors

Handle BABBLE interrupt error conditions from a work struct handler.
This indirection is necessary as we can't be certain that the phy
functions don't sleep.

Platform layer implementation may pass a babble error down to the core
in order to handle it.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: add reset hook to platform ops
Daniel Mack [Wed, 2 Apr 2014 11:58:27 +0000 (13:58 +0200)]
usb: musb: add reset hook to platform ops

Babble interrupts require us to reset the DSPS glue layer. In order to
handle all other recovery tasks independently, add a new hook for
platform-specific implementations of the actual reset.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Use GFP_ATOMIC when allocating under held spinlock
Andreas Larsson [Tue, 1 Apr 2014 10:15:17 +0000 (12:15 +0200)]
usb: gadget: gr_udc: Use GFP_ATOMIC when allocating under held spinlock

As gr_ep_init must be called with dev->lock held, GFP_KERNEL must not be used.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Return error code when trying to set ep.maxpacket > ep.maxpacket...
Andreas Larsson [Thu, 27 Mar 2014 15:15:58 +0000 (16:15 +0100)]
usb: gadget: gr_udc: Return error code when trying to set ep.maxpacket > ep.maxpacket_limit

Make gr_ep_enable fail properly when a call requests a larger ep.maxpacket than
ep.maxpacket_limit.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Add ep.maxpacket_limit to debugfs information
Andreas Larsson [Thu, 27 Mar 2014 15:15:57 +0000 (16:15 +0100)]
usb: gadget: gr_udc: Add ep.maxpacket_limit to debugfs information

Add information on ep.maxpacket_limit for each endpoint in the debugfs
information.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Use of_property_read_u32_index to access arrays
Andreas Larsson [Thu, 27 Mar 2014 15:15:56 +0000 (16:15 +0100)]
usb: gadget: gr_udc: Use of_property_read_u32_index to access arrays

Use an appropriate accessor function for property arrays to make the code nicer
and make the code correct if it would ever run on little endian architectures.
Suggested by Mark Rutland.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Use platform_get_irq instead of irq_of_parse_and_map
Andreas Larsson [Thu, 27 Mar 2014 15:15:55 +0000 (16:15 +0100)]
usb: gadget: gr_udc: Use platform_get_irq instead of irq_of_parse_and_map

Use platform_get_irq as no mapping needs to be done. No functional difference
for SPARC which is the typical environment for the driver though. Suggested by
Mark Rutland.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: Expand devicetree documentation
Andreas Larsson [Thu, 27 Mar 2014 15:15:54 +0000 (16:15 +0100)]
usb: gadget: gr_udc: Expand devicetree documentation

Provide more information on the two different interrupt cases and more
information of endpoint buffer sizes. Suggested by Mark Rutland.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: gr_udc: improve platform_device variable name
Andreas Larsson [Thu, 27 Mar 2014 15:15:53 +0000 (16:15 +0100)]
usb: gadget: gr_udc: improve platform_device variable name

Rename struct platform_device pointers from ofdev to pdev for clarity,
while at that, also use platform_set/get_drvdata() helpers.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: generic: switch over to IS_ENABLED()
Felipe Balbi [Mon, 21 Apr 2014 15:50:35 +0000 (10:50 -0500)]
usb: phy: generic: switch over to IS_ENABLED()

when checking if our generic PHY is enabled,
it's a lot easier to use IS_ENABLED() instead
of manually checking for it. While at that, also
remove the bogus defined(MODULE) at the end of
the line.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: generic: allow multiples calls to usb_phy_generic_register()
Felipe Balbi [Wed, 16 Apr 2014 21:16:33 +0000 (16:16 -0500)]
usb: phy: generic: allow multiples calls to usb_phy_generic_register()

it's now very easy to return a platform_device pointer
and have the caller pass it as argument when calling
usb_phy_generic_unregister().

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: musb: move usb_phy_generic_{un,}register calls to probe()/remove()
Felipe Balbi [Wed, 16 Apr 2014 21:05:17 +0000 (16:05 -0500)]
usb: musb: move usb_phy_generic_{un,}register calls to probe()/remove()

This patch is in preparation to supporting
calling those functions multiple times.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: rename <linux/usb/usb_phy_gen_xceiv.h> to <linux/usb/usb_phy_generic.h>
Felipe Balbi [Wed, 16 Apr 2014 20:28:32 +0000 (15:28 -0500)]
usb: phy: rename <linux/usb/usb_phy_gen_xceiv.h> to <linux/usb/usb_phy_generic.h>

now that all functions match the driver name,
the only missing piece is to rename the header
file itself.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: rename usb_nop_xceiv to usb_phy_generic
Felipe Balbi [Wed, 16 Apr 2014 20:20:44 +0000 (15:20 -0500)]
usb: phy: rename usb_nop_xceiv to usb_phy_generic

no functional changes, just renaming the function
in order to make it slightly clearer what it should
be used for, also matching the driver name.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: gadget: only GPL drivers in the gadget and phy framework
Felipe Balbi [Tue, 1 Apr 2014 18:19:32 +0000 (13:19 -0500)]
usb: gadget: only GPL drivers in the gadget and phy framework

We only support GPL drivers in the USB Gadget Framework,
it sounds correct to make all exported symbols GPL too.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: core: refactor mode initialization to its own function
Felipe Balbi [Wed, 16 Apr 2014 20:13:45 +0000 (15:13 -0500)]
usb: dwc3: core: refactor mode initialization to its own function

Move mode (Host, Peripheral, OTG) initialization
to its own function in order to decrease the size
of our probe() routine.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: phy: mv-u3d: switch over to writel/readl
Felipe Balbi [Thu, 17 Apr 2014 16:24:27 +0000 (11:24 -0500)]
usb: phy: mv-u3d: switch over to writel/readl

by removing the _relaxed suffix, we can build
this driver in other architectures.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: core: refactor PHY initialization
Felipe Balbi [Wed, 16 Apr 2014 20:08:29 +0000 (15:08 -0500)]
usb: dwc3: core: refactor PHY initialization

our probe() routine is too large and we can
easily refactor PHY-related code out to another
function to make it slightly less painful to read.

Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agousb: dwc3: gadget: clear stall when disabling endpoint
Felipe Balbi [Wed, 16 Apr 2014 15:30:33 +0000 (10:30 -0500)]
usb: dwc3: gadget: clear stall when disabling endpoint

so it seems like DWC3 IP doesn't clear stalls
automatically when we disable an endpoint, because
of that, we _must_ make sure stalls are cleared
before clearing the proper bit in DALEPENA register.

Cc: <stable@vger.kernel.org> # v3.4+
Reported-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
10 years agoLinux 3.15-rc1
Linus Torvalds [Sun, 13 Apr 2014 21:18:35 +0000 (14:18 -0700)]
Linux 3.15-rc1

10 years agomm: Initialize error in shmem_file_aio_read()
Geert Uytterhoeven [Sun, 13 Apr 2014 18:46:22 +0000 (20:46 +0200)]
mm: Initialize error in shmem_file_aio_read()

Some versions of gcc even warn about it:

  mm/shmem.c: In function ‘shmem_file_aio_read’:
  mm/shmem.c:1414: warning: ‘error’ may be used uninitialized in this function

If the loop is aborted during the first iteration by one of the two
first break statements, error will be uninitialized.

Introduced by commit 6e58e79db8a1 ("introduce copy_page_to_iter, kill
loop over iovec in generic_file_aio_read()").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agocifs: Use min_t() when comparing "size_t" and "unsigned long"
Geert Uytterhoeven [Sun, 13 Apr 2014 18:46:21 +0000 (20:46 +0200)]
cifs: Use min_t() when comparing "size_t" and "unsigned long"

On 32 bit, size_t is "unsigned int", not "unsigned long", causing the
following warning when comparing with PAGE_SIZE, which is always "unsigned
long":

  fs/cifs/file.c: In function ‘cifs_readdata_to_iov’:
  fs/cifs/file.c:2757: warning: comparison of distinct pointer types lacks a cast

Introduced by commit 7f25bba819a3 ("cifs_iovec_read: keep iov_iter
between the calls of cifs_readdata_to_iov()"), which changed the
signedness of "remaining" and the code from min_t() to min().

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Sun, 13 Apr 2014 20:28:13 +0000 (13:28 -0700)]
Merge branch 'slab/next' of git://git./linux/kernel/git/penberg/linux

Pull slab changes from Pekka Enberg:
 "The biggest change is byte-sized freelist indices which reduces slab
  freelist memory usage:

    https://lkml.org/lkml/2013/12/2/64"

* 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
  mm: slab/slub: use page->list consistently instead of page->lru
  mm/slab.c: cleanup outdated comments and unify variables naming
  slab: fix wrongly used macro
  slub: fix high order page allocation problem with __GFP_NOFAIL
  slab: Make allocations with GFP_ZERO slightly more efficient
  slab: make more slab management structure off the slab
  slab: introduce byte sized index for the freelist of a slab
  slab: restrict the number of objects in a slab
  slab: introduce helper functions to get/set free object
  slab: factor out calculate nr objects in cache_estimate

10 years agoMerge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Sun, 13 Apr 2014 01:22:27 +0000 (18:22 -0700)]
Merge branch 'misc' of git://git./linux/kernel/git/mmarek/kbuild

Pull misc kbuild changes from Michal Marek:
 "Here is the non-critical part of kbuild:
   - One bogus coccinelle check removed, one check fixed not to suggest
     the obsolete PTR_RET macro
   - scripts/tags.sh does not index the generated *.mod.c files
   - new objdiff tool to list differences between two versions of an
     object file
   - A fix for scripts/bootgraph.pl"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scripts/coccinelle: Use PTR_ERR_OR_ZERO
  scripts/bootgraph.pl: Add graphic header
  scripts: objdiff: detect object code changes between two commits
  Coccicheck: Remove memcpy to struct assignment test
  scripts/tags.sh: Ignore *.mod.c

10 years agosym53c8xx_2: Set DID_REQUEUE return code when aborting squeue
Mikulas Patocka [Wed, 9 Apr 2014 01:52:05 +0000 (21:52 -0400)]
sym53c8xx_2: Set DID_REQUEUE return code when aborting squeue

This patch fixes I/O errors with the sym53c8xx_2 driver when the disk
returns QUEUE FULL status.

When the controller encounters an error (including QUEUE FULL or BUSY
status), it aborts all not yet submitted requests in the function
sym_dequeue_from_squeue.

This function aborts them with DID_SOFT_ERROR.

If the disk has full tag queue, the request that caused the overflow is
aborted with QUEUE FULL status (and the scsi midlayer properly retries
it until it is accepted by the disk), but the sym53c8xx_2 driver aborts
the following requests with DID_SOFT_ERROR --- for them, the midlayer
does just a few retries and then signals the error up to sd.

The result is that disk returning QUEUE FULL causes request failures.

The error was reproduced on 53c895 with COMPAQ BD03685A24 disk
(rebranded ST336607LC) with command queue 48 or 64 tags.  The disk has
64 tags, but under some access patterns it return QUEUE FULL when there
are less than 64 pending tags.  The SCSI specification allows returning
QUEUE FULL anytime and it is up to the host to retry.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agopowerpc: Don't try to set LPCR unless we're in hypervisor mode
Paul Mackerras [Fri, 11 Apr 2014 06:43:35 +0000 (16:43 +1000)]
powerpc: Don't try to set LPCR unless we're in hypervisor mode

Commit 8f619b5429d9 ("powerpc/ppc64: Do not turn AIL (reloc-on
interrupts) too early") added code to set the AIL bit in the LPCR
without checking whether the kernel is running in hypervisor mode.  The
result is that when the kernel is running as a guest (i.e., under
PowerKVM or PowerVM), the processor takes a privileged instruction
interrupt at that point, causing a panic.  The visible result is that
the kernel hangs after printing "returning from prom_init".

This fixes it by checking for hypervisor mode being available before
setting LPCR.  If we are not in hypervisor mode, we enable relocation-on
interrupts later in pSeries_setup_arch using the H_SET_MODE hcall.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agofutex: update documentation for ordering guarantees
Davidlohr Bueso [Wed, 9 Apr 2014 18:55:07 +0000 (11:55 -0700)]
futex: update documentation for ordering guarantees

Commits 11d4616bd07f ("futex: revert back to the explicit waiter
counting code") and 69cd9eba3886 ("futex: avoid race between requeue and
wake") changed some of the finer details of how we think about futexes.
One was a late fix and the other a consequence of overlooking the whole
requeuing logic.

The first change caused our documentation to be incorrect, and the
second made us aware that we need to explicitly add more details to it.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 13 Apr 2014 00:31:22 +0000 (17:31 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull yet more networking updates from David Miller:

 1) Various fixes to the new Redpine Signals wireless driver, from
    Fariya Fatima.

 2) L2TP PPP connect code takes PMTU from the wrong socket, fix from
    Dmitry Petukhov.

 3) UFO and TSO packets differ in whether they include the protocol
    header in gso_size, account for that in skb_gso_transport_seglen().
   From Florian Westphal.

 4) If VLAN untagging fails, we double free the SKB in the bridging
    output path.  From Toshiaki Makita.

 5) Several call sites of sk->sk_data_ready() were referencing an SKB
    just added to the socket receive queue in order to calculate the
    second argument via skb->len.  This is dangerous because the moment
    the skb is added to the receive queue it can be consumed in another
    context and freed up.

    It turns out also that none of the sk->sk_data_ready()
    implementations even care about this second argument.

    So just kill it off and thus fix all these use-after-free bugs as a
    side effect.

 6) Fix inverted test in tcp_v6_send_response(), from Lorenzo Colitti.

 7) pktgen needs to do locking properly for LLTX devices, from Daniel
    Borkmann.

 8) xen-netfront driver initializes TX array entries in RX loop :-) From
    Vincenzo Maffione.

 9) After refactoring, some tunnel drivers allow a tunnel to be
    configured on top itself.  Fix from Nicolas Dichtel.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits)
  vti: don't allow to add the same tunnel twice
  gre: don't allow to add the same tunnel twice
  drivers: net: xen-netfront: fix array initialization bug
  pktgen: be friendly to LLTX devices
  r8152: check RTL8152_UNPLUG
  net: sun4i-emac: add promiscuous support
  net/apne: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
  net: ipv6: Fix oif in TCP SYN+ACK route lookup.
  drivers: net: cpsw: enable interrupts after napi enable and clearing previous interrupts
  drivers: net: cpsw: discard all packets received when interface is down
  net: Fix use after free by removing length arg from sk_data_ready callbacks.
  Drivers: net: hyperv: Address UDP checksum issues
  Drivers: net: hyperv: Negotiate suitable ndis version for offload support
  Drivers: net: hyperv: Allocate memory for all possible per-pecket information
  bridge: Fix double free and memory leak around br_allowed_ingress
  bonding: Remove debug_fs files when module init fails
  i40evf: program RSS LUT correctly
  i40evf: remove open-coded skb_cow_head
  ixgb: remove open-coded skb_cow_head
  igbvf: remove open-coded skb_cow_head
  ...

10 years agoMerge tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realm...
Linus Torvalds [Sun, 13 Apr 2014 00:26:45 +0000 (17:26 -0700)]
Merge tag 'blackfin-for-linus' of git://git./linux/kernel/git/realmz6/blackfin-linux

Pull blackfin updates from Steven Miao:
 "Code cleanup, some previously ignored patches, and bug fixes"

* tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux:
  blackfin: cleanup board files
  bf609: clock: drop unused clock bit set/clear functions
  Blackfin: bf537: rename "CONFIG_ADT75"
  Blackfin: bf537: rename "CONFIG_AD7314"
  Blackfin: bf537: rename ad2s120x ->ad2s1200
  blackfin: bf537: fix typo "CONFIG_SND_SOC_ADV80X_MODULE"
  blackfin: dma: current count mmr is read only
  bfin_crc: Move architecture independant crc header file out of the blackfin folder.
  bf54x: drop unuesd HOST status,control,timeout registers bit define macros
  blackfin: portmux: cleanup head file
  Blackfin: remove "config IP_CHECKSUM_L1"
  blackfin: Remove GENERIC_GPIO config option again
  blackfin:Use generic /proc/interrupts implementation
  blackfin: bf60x: fix typo "CONFIG_PM_BFIN_WAKE_PA15_POL"

10 years agoMerge tag 'remoteproc-3.15-cleanups' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 13 Apr 2014 00:23:12 +0000 (17:23 -0700)]
Merge tag 'remoteproc-3.15-cleanups' of git://git./linux/kernel/git/ohad/remoteproc

Pull remoteproc cleanups from Ohad Ben-Cohen:
 "Several remoteproc cleanup patches coming from Jingoo Han, Julia
  Lawall and Uwe Kleine-König"

* tag 'remoteproc-3.15-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc/ste_modem: staticize local symbols
  remoteproc/davinci: simplify use of devm_ioremap_resource
  remoteproc/davinci: drop needless devm_clk_put

10 years agoMerge tag 'llvmlinux-for-v3.15' of git://git.linuxfoundation.org/llvmlinux/kernel
Linus Torvalds [Sun, 13 Apr 2014 00:00:40 +0000 (17:00 -0700)]
Merge tag 'llvmlinux-for-v3.15' of git://git.linuxfoundation.org/llvmlinux/kernel

Pull llvm patches from Behan Webster:
 "These are some initial updates to support compiling the kernel with
  clang.

  These patches have been through the proper reviews to the best of my
  ability, and have been soaking in linux-next for a few weeks.  These
  patches by themselves still do not completely allow clang to be used
  with the kernel code, but lay the foundation for other patches which
  are still under review.

  Several other of the LLVMLinux patches have been already added via
  maintainer trees"

* tag 'llvmlinux-for-v3.15' of git://git.linuxfoundation.org/llvmlinux/kernel:
  x86: LLVMLinux: Fix "incomplete type const struct x86cpu_device_id"
  x86 kbuild: LLVMLinux: More cc-options added for clang
  x86, acpi: LLVMLinux: Remove nested functions from Thinkpad ACPI
  LLVMLinux: Add support for clang to compiler.h and new compiler-clang.h
  LLVMLinux: Remove warning about returning an uninitialized variable
  kbuild: LLVMLinux: Fix LINUX_COMPILER definition script for compilation with clang
  Documentation: LLVMLinux: Update Documentation/dontdiff
  kbuild: LLVMLinux: Adapt warnings for compilation with clang
  kbuild: LLVMLinux: Add Kbuild support for building kernel with Clang

10 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 12 Apr 2014 23:51:08 +0000 (16:51 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "Here are the target pending updates for v3.15-rc1.  Apologies in
  advance for waiting until the second to last day of the merge window
  to send these out.

  The highlights this round include:

   - iser-target support for T10 PI (DIF) offloads (Sagi + Or)
   - Fix Task Aborted Status (TAS) handling in target-core (Alex Leung)
   - Pass in transport supported PI at session initialization (Sagi + MKP + nab)
   - Add WRITE_INSERT + READ_STRIP T10 PI support in target-core (nab + Sagi)
   - Fix iscsi-target ERL=2 ASYNC_EVENT connection pointer bug (nab)
   - Fix tcm_fc use-after-free of ft_tpg (Andy Grover)
   - Use correct ib_sg_dma primitives in ib_isert (Mike Marciniszyn)

  Also, note the virtio-scsi + vhost-scsi changes to expose T10 PI
  metadata into KVM guest have been left-out for now, as there where a
  few comments from MST + Paolo that where not able to be addressed in
  time for v3.15.  Please expect this feature for v3.16-rc1"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (43 commits)
  ib_srpt: Use correct ib_sg_dma primitives
  target/tcm_fc: Rename ft_tport_create to ft_tport_get
  target/tcm_fc: Rename ft_{add,del}_lport to {add,del}_wwn
  target/tcm_fc: Rename structs and list members for clarity
  target/tcm_fc: Limit to 1 TPG per wwn
  target/tcm_fc: Don't export ft_lport_list
  target/tcm_fc: Fix use-after-free of ft_tpg
  target: Add check to prevent Abort Task from aborting itself
  target: Enable READ_STRIP emulation in target_complete_ok_work
  target/sbc: Add sbc_dif_read_strip software emulation
  target: Enable WRITE_INSERT emulation in target_execute_cmd
  target/sbc: Add sbc_dif_generate software emulation
  target/sbc: Only expose PI read_cap16 bits when supported by fabric
  target/spc: Only expose PI mode page bits when supported by fabric
  target/spc: Only expose PI inquiry bits when supported by fabric
  target: Pass in transport supported PI at session initialization
  target/iblock: Fix double bioset_integrity_free bug
  Target/sbc: Initialize COMPARE_AND_WRITE write_sg scatterlist
  target/rd: T10-Dif: RAM disk is allocating more space than required.
  iscsi-target: Fix ERL=2 ASYNC_EVENT connection pointer bug
  ...