Transceivers need to manage OTG controller state on OMAP1 to enable
switching between peripheral and host modes. Provide a driver for that.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.
Acked-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Add support for using the sourcesink function in gadgets composed with
configfs.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Add support for using the loopback USB function in gadgets composed with
configfs.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

alloc_ep_req() is a function repeated in several modules.
Make a common implementation and use it.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

If there are setup requests not directed to an endpont or an interface,
current config's setup() has been attempted so far.
This patch, in case the above fails, adds code which tries the setup() of
configuration's function if there is only one function in the configuration.

This behavior is required to provide equivalent of gadget zero with configfs.

The gadget zero has a "config driver" for sourcesink, but all it does is
delegating the request to the function proper. So when the equivalent gadget
is set up with configfs it needs to handle requests directed to
"config driver", but with configfs it is not possible to specify
"config drivers".
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Only start the otg_timer in dual role mode; otherwise in peripheral mode
when musb is disconnected from the host port, otg_timer starts and
continuously toggles the session, which causes VBUS pulse.
Signed-off-by: NBin Liu <b-liu@ti.com>
Acked-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This patch removes dependency on Freescale USB UTG Transceiver
driver and makes OTG FSM implementation selectable.
Signed-off-by: NAnton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Other USB drivers may want to use OTG final state machine
implementation, so make this header available for them.
Signed-off-by: NAnton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

OTG Final State Machine calls functions which may sleep.

For example, start_gadget callback implementation can use
usb_gadget_vbus_connect(), whose context: can sleep.

If so, mutex should be used instead of spinlock.
Signed-off-by: NAnton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

if this header is included twice, we would have
redefinition build errors. Fix this.
Signed-off-by: NAnton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

this header uses spinlocks and errno values, so
we must include <linux/spinlock.h> and <linux/errno.h>
to avoid build errors.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

These functions used to return negative errror codes but now they return
ERR_PTRs.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

device_driver.name is "const char *"
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The stop_activity function never uses driver argument (even
though it modifies it) and thus it is safe to remove it.
Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

we have a helper to fetch endpoint type out of
a descriptor, let's use it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The dsps platform needs to save save some registers at suspend time and
restore them after resume. This patch adds a struct for these registers,
and also lets the musb core know that the core registers need to be
saved as well.

We also have to explicitly de-assert the port reset upon resume on this
platform, but musb_port_reset() should not be called from glue layers.

Hence, introduce a flag in struct musb_hdrc_config for this.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

rx_mode and tx_mode need to be read at suspend time and restored on
resume for dsps platforms. So add it to the wrapper struct first, and
initialize the values.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Make musb_port_suspend() externally available, and call it when to host
goes into suspend. This allows the core to go into suspend while a
device is connected.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

It appears not all platforms featuring a musb core need to save the musb
core registers at suspend time and restore them on resume.

The dsps platform does, however, and because it shouldn't cause any
trouble on other platforms, do it unconditionally for all of them.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Due to inter dependencies of I2C and extcon by the time dwc3
checks for extcon device its not registered especially in case of J6.
In O5 the vbus regulator save us from getting to this point.
So for tiime being return PROBE_DEFER if extcon is enabled in dt.
Signed-off-by: NGeorge Cherian <george.cherian@ti.com>

This will tell glue layer which mode we want port
to be in.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

this will let us support broken designs such
as AM335x EVM SK where ID pin isn't routed
anywhere on a host port.

With this we can toggle internal IDDIG signal
and make sure MUSB goes into host mode as
necessary.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Turn clk_enable() and clk_disable() calls into clk_prepare_enable() and
clk_disable_unprepare() to get ready for the migration to the common
clock framework.

Cc: Felipe Balbi <balbi@ti.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Make sure RTC-interrupts are disabled at shutdown.

As the RTC is generally powered by backup power (VDDBU), its interrupts
are not disabled on wake-up, user, watchdog or software reset.  This
could cause troubles on other systems (e.g.  older kernels) if an
interrupt occurs before a handler has been installed at next boot.

Let us be well-behaved and disable them on clean shutdowns at least (as
do the RTT-based rtc-at91sam9 driver).
Signed-off-by: NJohan Hovold <jhovold@gmail.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Remove CONFIG_USE_GENERIC_SMP_HELPERS left by commit 0a06ff06
("kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS").
Signed-off-by: NYuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

If the VIF thread is still running after unbinding the Tx and Rx IRQs
in xenvif_disconnect(), the thread may attempt to raise an event which
will BUG (as the irq is unbound).
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
Acked-by: NWei Liu <wei.liu2@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

airlied:
The lifetime changes introduced in 5bdebb18
tried to use device_create, however that led to the regression where dev->type
wasn't getting set correctly. First attempt at fixing it would have led to
a race, so this undoes the device_createa work and does it all manually
making sure the dev->type is setup before we register the device.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This patch releases a vma object when cleaning up userptr resources.
A new vma object was allocated and copied when getting userptr pages
so the new vma object should be freed properly if the userptr pages
aren't used anymore.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

In iSCSI negotiations with initiator CHAP enabled, usernames with
trailing garbage are permitted, because the string comparison only
checks the strlen of the configured username.

e.g. "usernameXXXXX" will be permitted to match "username".

Just check one more byte so the trailing null char is also matched.
Signed-off-by: NEric Seppanen <eric@purestorage.com>
Cc: <stable@vger.kernel.org> #3.1+
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>

extract_param() is called with max_length set to the total size of the
output buffer.  It's not safe to allow a parameter length equal to the
buffer size as the terminating null would be written one byte past the
end of the output buffer.
Signed-off-by: NEric Seppanen <eric@purestorage.com>
Cc: <stable@vger.kernel.org> #3.1+
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>

Add auto-MDI/MDI-X capability for forced (autonegotiation disabled)
10/100 Mbps speeds on Vitesse VSC82x4 PHYs. Exported previously static
function genphy_setup_forced() required by the new config_aneg handler
in the Vitesse PHY module.
Signed-off-by: NMadalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: NShruti Kanetkar <Shruti@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Vitesse VSC8662 is Dual Port 10/100/1000Base-T Phy
Its register set and features are similar to other Vitesse Phys.
Signed-off-by: NSandeep Singh <Sandeep@freescale.com>
Signed-off-by: NAndy Fleming <afleming@gmail.com>
Signed-off-by: NShruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The VSC8574 is a quad-port Gigabit Ethernet transceiver with four SerDes
interfaces for quad-port dual media capability.
Signed-off-by: NShaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: NAndy Fleming <afleming@gmail.com>
Signed-off-by: NShruti Kanetkar <Shruti@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Vitesse VSC8234 is quad port 10/100/1000BASE-T PHY
with SGMII and SERDES MAC interfaces.
Signed-off-by: NAndy Fleming <afleming@gmail.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NShruti Kanetkar <Shruti@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch now always passes msg->msg_namelen as 0. recvmsg handlers must
set msg_namelen to the proper size <= sizeof(struct sockaddr_storage)
to return msg_name to the user.

This prevents numerous uninitialized memory leaks we had in the
recvmsg handlers and makes it harder for new code to accidentally leak
uninitialized memory.

Optimize for the case recvfrom is called with NULL as address. We don't
need to copy the address at all, so set it to NULL before invoking the
recvmsg handler. We can do so, because all the recvmsg handlers must
cope with the case a plain read() is called on them. read() also sets
msg_name to NULL.

Also document these changes in include/linux/net.h as suggested by David
Miller.

Changes since RFC:

Set msg->msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address. It also more naturally reflects the logic by the callers of
verify_iovec.

With this change in place I could remove "
if (!uaddr || msg_sys->msg_namelen == 0)
	msg->msg_name = NULL
".

This change does not alter the user visible error logic as we ignore
msg_namelen as long as msg_name is NULL.

Also remove two unnecessary curly brackets in ___sys_recvmsg and change
comments to netdev style.

Cc: David Miller <davem@davemloft.net>
Suggested-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The pcie_portdrv .probe() method calls pci_enable_device() once, in
pcie_port_device_register(), but the .remove() method calls
pci_disable_device() twice, in pcie_port_device_remove() and in
pcie_portdrv_remove().

That causes a "disabling already-disabled device" warning when removing a
PCIe port device.  This happens all the time when removing Thunderbolt
devices, but is also easy to reproduce with, e.g.,
"echo 0000:00:1c.3 > /sys/bus/pci/drivers/pcieport/unbind"

This patch removes the disable from pcie_portdrv_remove().

[bhelgaas: changelog, tag for stable]
Reported-by: NDavid Bulkow <David.Bulkow@stratus.com>
Reported-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v2.6.32+