In addition to consolidating the or1k-pic with other interrupt
controllers, this makes OpenRISC less tied to its on-cpu
interrupt controller.

All or1k-pic specific parts are moved out of irq.c and into
drivers/irqchip/irq-or1k-pic.c

In that transition, the functionality have been divided into
three chip variants.
One that handles level triggered interrupts, one that handles edge
triggered interrupts and one that handles the interrupt
controller that is present in the or1200 OpenRISC cpu
implementation.
Signed-off-by: NStefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Link: https://lkml.kernel.org/r/1401136302-27654-1-git-send-email-stefan.kristiansson@saunalahti.fiAcked-by: NJonas Bonn <jonas@southpole.se>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The extra register data structure is pointless. Move the offsets of
the status and the mask register into the shirq block structure.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.923306179@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Only spear300 has an actual mask register for the RAS interrupts. Add
an irq chip pointer to the shirq struct and initialize spear300 with
the actual implementation and the others with dummy_irq_chip. The
disabled RAS3 block has no irq chip assigned, so we can check for this
and remove the disabled member.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.831341023@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

"ack" is actually a mask in the parent irq. The demultiplexer and the
handlers run with interrupts disabled. No point in masking and
unmasking the parent.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.754300980@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

I don't know if there are less efficient ways to code that. Get rid of
the loop mess and use efficient code.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.662897061@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

None of the chips has a ACK register. The code brainlessly fiddles
with the enable register, so it might even reenable a disabled
interrupt at least on spear300.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.570396433@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Calculate the status mask at compile time, not at runtime.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.496614337@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

No point in doing a full irq lookup, when the desc pointer is
available.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.404243909@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Order the ras blocks in the order of interrupts not alphabetically.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.310591579@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The struct members of the shirq block struct are named to confuse the
hell out of the casual reader. Clean it up.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.219411832@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The struct member is pointless and a nismomer as well.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.129694036@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

No point in having them in a separate header file. Make the init
functions static.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.038658058@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212712.948802939@linutronix.deAcked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The ras3 block on spear320 claims to have 3 interrupts. In fact it has
one and 6 reserved interrupts. Account the 6 reserved to this block so
it has 7 interrupts total. That matches the datasheet and the device
tree entries.

Broken since commit 80515a5a(ARM: SPEAr3xx: shirq: simplify and move
the shared irq multiplexor to DT). Testing is overrated....
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212712.872379208@linutronix.de
Fixes: 80515a5a ('ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT')
Cc: <stable@vger.kernel.org> # v3.8+
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

Using the generic function saves looking up this custom one in a source
navigator.
Signed-off-by: NDaniel Thompson <daniel.thompson@linaro.org>
Link: https://lkml.kernel.org/r/1401894112-13386-1-git-send-email-daniel.thompson@linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Acked-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

The driver was configuring the interrupt handler for the Level-2
interrupts to be "level" triggered while they are in fact "edge"
triggered. Fix this by using the correct handler.
Reported-by: NBrian Norris <computersforpeace@gmail.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Link: https://lkml.kernel.org/r/1402337102-19428-1-git-send-email-f.fainelli@gmail.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>

Until now, the irq-armada-370-xp irqchip driver was not masking all
interrupts at initialization. While in most cases this is not a
problem because the bootloader has probably masked all interrupts, it
becomes a problem when you use kexec: you're in kernel A, with many
interrupts enabled, and then kexec into kernel B, without going
through the bootloader. So during the boot process, if an interrupt
occurs while the corresponding driver has not been loaded, you would
get spurious interrupts.

This commit fixes that by ensuring all interrupts are properly masked
when the irqchip driver is initialized. Note that interrupt masking
takes place at two level: at the global level (main_int_base) and at
the per-CPU level (per_cpu_int_base).
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1401481098-23326-6-git-send-email-thomas.petazzoni@free-electrons.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>

Call skb_pop_rcv_encapsulation and postpull_rcsum for the Ethernet
header to work properly with checksum complete.
Signed-off-by: NTom Herbert <therbert@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When we mirror packets from a vxlan tunnel to other device,
the mirror device should see the same packets (that is, without
outer header). Because vxlan tunnel sets dev->hard_header_len,
tcf_mirred() resets mac header back to outer mac, the mirror device
actually sees packets with outer headers

Vxlan tunnel should set dev->needed_headroom instead of
dev->hard_header_len, like what other ip tunnels do. This fixes
the above problem.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: stephen hemminger <stephen@networkplumber.org>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: NCong Wang <cwang@twopensource.com>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch contains several fixes for Scsi START_STOP_UNIT. The previous
code did not account for signed vs. unsigned arithmetic which resulted
in an invalid lowest power state caculation when the device only supports
1 power state.

The code for Power Condition == 2 (Idle) was not following the spec. The
spec calls for setting the device to specific power states, depending
upon Power Condition Modifier, without accounting for the number of
power states supported by the device.

The code for Power Condition == 3 (Standby) was using a hard-coded '0'
which is replaced with the macro POWER_STATE_0.
Signed-off-by: NDan McLeran <daniel.mcleran@intel.com>
Reviewed-by: NVishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

The nvme-scsi file defined its own Log Page constant.  Use the
newly-defined one from the header file instead.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

There is a potential dead lock if a cpu event occurs during nvme probe
since it registered with hot cpu notification. This fixes the race by
having the module register with notification outside of probe rather
than have each device register.

The actual work is done in a scheduled work queue instead of in the
notifier since assigning IO queues has the potential to block if the
driver creates additional queues.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

This patch fixes a NULL pointer dereference regression bug that was
introduced with:

commit 1e1110c4
Author: Mikulas Patocka <mpatocka@redhat.com>
Date:   Sat May 17 06:49:22 2014 -0400

    target: fix memory leak on XCOPY

Now that target_put_sess_cmd() -> kref_put_spinlock_irqsave() is
called with a valid se_cmd->cmd_kref, a NULL pointer dereference
is triggered because the XCOPY passthrough commands don't have
an associated se_session pointer.

To address this bug, go ahead and checking for a NULL se_sess pointer
within target_put_sess_cmd(), and call se_cmd->se_tfo->release_cmd()
to release the XCOPY's xcopy_pt_cmd memory.
Reported-by: NThomas Glanzmann <thomas@glanzmann.de>
Cc: Thomas Glanzmann <thomas@glanzmann.de>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org # 3.12+
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>

Add software TSO support for FEC.
This feature allows to improve outbound throughput performance.

Tested on imx6dl sabresd board, running iperf tcp tests shows:
- 16.2% improvement comparing with FEC SG patch
- 82% improvement comparing with NO SG & TSO patch

$ ethtool -K eth0 tso on
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec   181 MBytes   506 Mbits/sec

During the testing, CPU loading is 30%.
Since imx6dl FEC Bandwidth is limited to SOC system bus bandwidth, the
performance with SW TSO is a milestone.

CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
CC: Li Frank <B20596@freescale.com>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add Scatter/gather support for FEC.
This feature allows to improve outbound throughput performance.

Tested on imx6dl sabresd board:
Running iperf tests shows a 55.4% improvement.

$ ethtool -K eth0 sg off
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec  99.5 MBytes   278 Mbits/sec

$ ethtool -K eth0 sg on
$ iperf -c 10.192.242.167 -t 3 &
[  3] local 10.192.242.108 port 52617 connected with 10.192.242.167 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 3.0 sec   154 MBytes   432 Mbits/sec

CC: Li Frank <B20596@freescale.com>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to support SG, software TSO, let's increase BD entry number.

CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to enhance the code readable, let's factorize the
feature list.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

IP header checksum is calcalated by network layer in default.
To support software TSO, it is better to use HW calculate the
IP header checksum.

FEC hw checksum feature request the checksum field in frame
is zero, otherwise the calculative CRC is not correct.

For segmentated TCP packet, HW calculate the IP header checksum again,
it doesn't bring any impact. For SW TSO, HW calculated checksum bring
better performance.
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Make the code more readable and easy to support other features like
SG, TSO, moving the common transmit function to one api.

And the patch also factorize the getting BD index to it own function.

CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: NFugang Duan <B38611@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With some specific configuration (VT6105M on Soekris 5510 and depending
on the device at the other end), fragmented packets were not transmitted
when forcing 100 full-duplex with autoneg disable.

This fix now write full-duplex chips register when forcing full or
half-duplex not only when autoneg is enable.
Signed-off-by: NFrançois Cachereul <f.cachereul@alphalink.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A malicious VF might try to starve the other VFs & PF by creating
contineous doorbell floods. In order to negate this, HW has a threshold of
doorbells per client, which will stop the client doorbells from arriving
if crossed.

The threshold currently configured for VFs is too low - under extreme traffic
scenarios, it's possible for a VF to reach the threshold and thus for its
fastpath to stop working.
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If L2FW utilized by the UNDI driver has the same version number as that
of the regular FW, a driver loading after UNDI and receiving an uncommon
answer from management will mistakenly assume the loaded FW matches its
own requirement and try to exist the flow via FLR.
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Set the phy access mode even in case of link-flap avoidance.
Signed-off-by: NYaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This avoids clearing the RX polarity setting in KR mode when polarity lane
is swapped, as otherwise this will result in failed link.
Signed-off-by: NYaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: NYuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: NAriel Elior <ariel.elior@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use devm_hwmon_device_register_with_groups instead of
the old-style manual attributes and hwmon device registration.

Also, unroll the attribute group macros for better code
readability.
Signed-off-by: NPawel Moll <pawel.moll@arm.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Move atxp1_id and atxp1_driver to proper place to avoid forward declaration.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add support for Sensirion SHTC1 and compatible temperature and humidity
sensors.
Signed-off-by: NTomas Pop <tomas.pop@sensirion.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups to
simplify the code a bit.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Tested-by: NPer Dalén <per.dalen@appeartv.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Generic detection leads to too many false positives, so drop it. FWIW
sensors-detect does not have such generic detection. If the user wants
to force the driver to bind to a not yet supported chip, he/she can
still do so using sysfs attribute new_device.
Signed-off-by: NJean Delvare <jdelvare@suse.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

All devices supported by ina2xx are bidirectional and report the
measured shunt voltage and power values as a signed 16 bit, but the
current driver implementation caches all registers as u16, leading
to an incorrect sign extension when reporting to userspace in
ina2xx_get_value().

This patch fixes the problem by casting the signed registers to s16.
Tested on an INA219.
Signed-off-by: NFabio Baltieri <fabio.baltieri@gmail.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>