The maximum size of packet that can be handled by controller including ethernet
header is 65535. Reducing gso_max_size accordingly.
Signed-off-by: NSarveshwar Bandi <sarveshwar.bandi@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes a potential hole when configuring the cycle counter used to
generate the nanosecond time clock. This clock is based off of the SYSTIME
registers along with the TIMINCA registers. The TIMINCA register determines
the increment to be added to the SYSTIME registers every DMA clock tick. This
register needs to be reconfigured whenever the link-speed changes. However,
the value calculated stays the same when link is down and when link is up.
Misconfiguration can occur if the link status changes due to a reset, which
causes the TIMINCA register to be reset. This reset puts the device in an
unstable state where the SYSTIME registers stop incrementing and the PTP
protocol does not function.

The solution is to double check the TIMINCA value and always reset the value
if the register is zero. This prevents a misconfiguration bug that halts the
PHC.
Signed-off-by: NJacob Keller <jacob.e.keller@intel.com>
Acked-by: NDon Skidmore <donald.c.skidmore@intel.com>
Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NYaniv Rosner <yaniv.rosner@broadcom.com>
Signed-off-by: NYuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When I2C is not responding it's usually due to a previous
unexpected reset during I2C operation. We release it by
powering down and up the SFP+ module.
Signed-off-by: NYaniv Rosner <yaniv.rosner@broadcom.com>
Signed-off-by: NYuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The adapter->npars[] array has QLCNIC_MAX_PCI_FUNC elements.  We
allocate it that way a few lines earlier in the function.  So this test
is off by one.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NAnirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There is a off by one error in the minimal number of BD in
bnx2x_start_xmit() and bnx2x_tx_int() before stopping/resuming tx queue.

A full size GSO packet, with data included in skb->head really needs
(MAX_SKB_FRAGS + 4) BDs, because of bnx2x_tx_split()

This error triggers if BQL is disabled and heavy TCP transmit traffic
occurs.

bnx2x_tx_split() definitely can be called, remove a wrong comment.
Reported-by: NTomas Hruby <thruby@google.com>
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Yaniv Rosner <yanivr@broadcom.com>
Cc: Merav Sicron <meravs@broadcom.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Robert Evans <evansr@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

(CAN_CTRLMODE_LISTENONLY & CAN_CTRLMODE_LOOPBACK) is (0x02 & 0x01) which
is zero so the condition is never true.  The intent here was to test
that both flags were set.

Cc: <stable@kernel.org> # 2.6.39+
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NOliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

bnx2x driver incorrectly sets ip_summed to CHECKSUM_UNNECESSARY on
encapsulated segments. TCP stack happily accepts frames with bad
checksums, if they are inside a GRE or IPIP encapsulation.

Our understanding is that if no IP or L4 csum validation was done by the
hardware, we should leave ip_summed as is (CHECKSUM_NONE), since
hardware doesn't provide CHECKSUM_COMPLETE support in its cqe.

Then, if IP/L4 checksumming was done by the hardware, set
CHECKSUM_UNNECESSARY if no error was flagged.

Patch based on findings and analysis from Robert Evans
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Yaniv Rosner <yanivr@broadcom.com>
Cc: Merav Sicron <meravs@broadcom.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Robert Evans <evansr@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The driver supports a maximum number of ports configurable at compile
time. Make sure the probe() method fails when registering a port that
exceeds the maximum instead of returning success without registering the
port.

This fixes a crash at system suspend time, when the driver tried to
suspend a non-registered port using the UART core.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

When probing fails, the driver must not try to cleanup resources that
have not been initialized. Fix this.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

In the transmit path of the bonding driver, skb->cb is used to
stash the skb->queue_mapping so that the bonding device can set its
own queue mapping.  This value becomes corrupted since the skb->cb is
also used in __dev_xmit_skb.

When transmitting through bonding driver, bond_select_queue is
called from dev_queue_xmit.  In bond_select_queue the original
skb->queue_mapping is copied into skb->cb (via bond_queue_mapping)
and skb->queue_mapping is overwritten with the bond driver queue.

Subsequently in dev_queue_xmit, __dev_xmit_skb is called which writes
the packet length into skb->cb, thereby overwriting the stashed
queue mappping.  In bond_dev_queue_xmit (called from hard_start_xmit),
the queue mapping for the skb is set to the stashed value which is now
the skb length and hence is an invalid queue for the slave device.

If we want to save skb->queue_mapping into skb->cb[], best place is to
add a field in struct qdisc_skb_cb, to make sure it wont conflict with
other layers (eg : Qdiscc, Infiniband...)

This patchs also makes sure (struct qdisc_skb_cb)->data is aligned on 8
bytes :

netem qdisc for example assumes it can store an u64 in it, without
misalignment penalty.

Note : we only have 20 bytes left in (struct qdisc_skb_cb)->data[].
The largest user is CHOKe and it fills it.

Based on a previous patch from Tom Herbert.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Reported-by: NTom Herbert <therbert@google.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If we modify primary via sysfs and it is not a valid slave,
we should record it for future use, and this behavior is the same with
bond_check_params().
Signed-off-by: NWeiping Pan <wpan@redhat.com>
Acked-by: NNicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: NJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A regression was introduced in the 3.3 rc series, commit
"drm/ttm: simplify memory accounting for ttm user v2",
causing the metadata of buffer objects created using the ttm_bo_create()
function to be accounted twice.
That causes massive leaks with the vmwgfx driver running for example
SpecViewperf Catia-03 test 2, eventually killing the app.

Furthermore, the same commit introduces a regression where
metadata accounting is leaked if a buffer object is
initialized with an illegal size. This is also fixed with this commit.

v2: Fixed an error path and removed an unused variable.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

clear the platform data pointer when mxs_pinctrl_probe_dt fails,
and also before the unregistering with pinctrl subsystem.
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

if there is no purecfg , the group pointer is allocated using kzalloc and if it
fails to allocate, we wont free the new_map,

if config is true, we call kmemdup and if it
fails to do so we wont free the allocated group if there is no purecfg.

fix this by doing the frees of new_map pointer and group pointers.
Acked-by: NDong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

After create config map, the new_map pointer becomes point to
PIN_MAP_TYPE_CONFIGS_PIN map rather than PIN_MAP_TYPE_MUX_GROUP map any more.
Thus using new_map pointer to display the MUX_GROUP info is not correct.
Using map pointer instead to show the correct MUX_GROUP map info.
Original the debug message is:
imx6q-pinctrl 20e0000.iomuxc: maps: function Yp group MX6Q_PAD_SD3_CMD num 12
After fix it is:
imx6q-pinctrl 20e0000.iomuxc: maps: function usdhc3 group usdhc3grp-1 num 11
Reported-by: NRichard Zhao <richard.zhao@freescale.com>
Signed-off-by: NDong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

of_get_parent can return null if no parent node found, so the allocated new_map
should be freed.
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Acked-by: NDong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

pinctrl: pinctrl-imx: free allocated pinctrl_map structure only once and use kernel facilities for IMX_PMX_DUMP

a) as we allocate the pinctrl_map structure at imx_dt_node_to_map at  line 167, anyway
   if its an element, or a num_elements * (sizeof(type)) elements allocated to one single
   pointer must be freed only once.

CASE. A)

as new_map is not moved and allocated like,

for (i = 0; i < MAX_ELEMS; i++) {
    new_map[i] = kmalloc(numelems * size, GFP_KERNEL);
}

its freed as

for (i = 0; i < MAX_ELEMS; i++) {
    kfree(new_map[i]);
}

CASE. B)
and its allocated like
        new_map = kmalloc(numelems * size, GFP_KERNEL);

it just needs kfree not as case A's.

b) use KERN_DEBUG facility for the IMX_PMX_DUMP macro.
Signed-off-by: NDevendra Naga <devendra.aaru@gmail.com>
Acked-by: NDong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Commit a60b57ed
"drivers/gpio: gpio-nomadik: Add support for irqdomains"
changed GPIO offset calculations to have this form:
(gpio % NMK_GPIO_PER_CHIP) except in this one place for
setting sleep mode, where the conversion was all wrong, and
instead mod:ing the GPIO with the IRQ base which does not
make any sense.

So fix this up so we can use sleepmode.
Reviewed-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>

We now strictly require clk_prepare() calls to be issued before
any clk_enable() calls.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Otherwise, I got below build error when CONFIG_LEDS_CLASS=m.

  LD      init/built-in.o
drivers/built-in.o: In function `asic3_led_probe':
clkdev.c:(.devinit.text+0x4680): undefined reference to `led_classdev_register'
drivers/built-in.o: In function `r_tpu_probe':
clkdev.c:(.devinit.text+0x4838): undefined reference to `led_classdev_register'
drivers/built-in.o: In function `asic3_led_remove':
clkdev.c:(.devexit.text+0x564): undefined reference to `led_classdev_unregister'
drivers/built-in.o: In function `r_tpu_remove':
clkdev.c:(.devexit.text+0x5a0): undefined reference to `led_classdev_unregister'
make: *** [vmlinux] Error 1
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NBryan Wu <bryan.wu@canonical.com>

Fixed a coding style issue relating to trailing
white space error found by checkpatch.pl tool in drivers/leds/led-class.c
Signed-off-by: NJeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: NBryan Wu <bryan.wu@canonical.com>

Function led_set_software_blink() assumes that blink timer is still running,
but commit 488bc35b introduced disabling
of blink timer before each call to led_set_software_blink().

Correct led_software_blink():
1) remove protection against reprogramming blink timer to the same values,
   because it only disables blinking now,
2) remove unnecessary call to led_stop_software_blink().
Signed-off-by: NRafal Prylowski <prylowski@metasoft.pl>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: NBryan Wu <bryan.wu@canonical.com>

This change adds support for the tilegx network driver based on the
GXIO IORPC support in the tilegx software stack, using the on-chip
mPIPE packet processing engine.
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

5906 devices also need the short DMA fragment workaround.  This patch
makes the necessary change.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Tested-by: NChristian Kujau <lists@nerdbynature.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

clk_{un}prepare is mandatory for platforms using common clock framework.
Since these drivers are used by SPEAr platform, which supports common
clock framework, add clk_{un}prepare() support for them. Otherwise
the clocks are not correctly en-/disabled and ethernet support doesn't
work.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

__lpc_handle_xmit() has two bugs :

1) It can leak skbs in case TXSTATUS_ERROR is set

2) It can wake up txqueue while no slot was freed.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Reported-by: NRoland Stigge <stigge@antcom.de>
Tested-by: NRoland Stigge <stigge@antcom.de>
Cc: Kevin Wells <kevin.wells@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

lpc_eth does a copy of transmitted skbs to DMA area, without checking
skb lengths, so can trigger buffer overflows :

memcpy(pldat->tx_buff_v + txidx * ENET_MAXF_SIZE, skb->data, len);

One way to get bigger skbs is to allow MTU changes above the 1500 limit.

Calling eth_change_mtu() in ndo_change_mtu() makes sure this cannot
happen.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Roland Stigge <stigge@antcom.de>
Cc: Kevin Wells <kevin.wells@nxp.com>
Acked-by: NRoland Stigge <stigge@antcom.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Trying to "modprobe dummy numdummies=30000" triggers :

INFO: rcu_sched self-detected stall on CPU { 8} (t=60000 jiffies)

After this splat, RTNL is locked and reboot is needed.

We must call cond_resched() to avoid this, even holding RTNL.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This switches over to the now exported clockevents_config() and
clockevents_config_and_register() helpers. This knocks off a
long-standing TMU TODO item.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

commit 3fa2a1df (virtio-net: per cpu 64 bit stats (v2)) added a race
on 32bit arches.

We must use separate syncp for rx and tx path as they can be run at the
same time on different cpus. Thus one sequence increment can be lost and
readers spin forever.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Acked-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

While reworking the r8169 driver a few months ago to perform the
smallest amount of work in the irq handler, I took care of avoiding
any irq mask register operation in the slow work dedicated user
context thread. The slow work thread scheduled an extra round of NAPI
work which would ultimately set the irq mask register as required,
thus keeping such irq mask operations in the NAPI handler.
It would eventually race with the irq handler and delay NAPI execution
for - assuming no further irq - a whole ksoftirqd period. Mildly a
problem for rare link changes or corner case PCI events.

The race was always lost after the last bh disabling lock had been
removed from the work thread and people started wondering where those
pesky "NOHZ: local_softirq_pending 08" messages came from.

Actually the irq mask register _can_ be set up directly in the slow
work thread.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Reported-by: NDave Jones <davej@redhat.com>
Tested-by: NMarc Dionne <marc.c.dionne@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix regresson since the introduction of command stream checking on
evergreen (thread referenced below). Issue is cause by ddx allocating
bo with formula width*height*bpp while programming the GPU command
stream with ALIGN(height, 8). In some case (where page alignment does
not hide the extra size bo should be according to height alignment)
the kernel will reject the command stream.

This patch reprogram the command stream to slice - 1 (slice is
a derivative value from height) which avoid rejecting the command
stream while keeping the value of command stream checking from a
security point of view.

This patch also fix wrong computation of layer size for 2D tiled
surface. Which should fix issue when 2D color tiling is enabled.
This dump the radeon KMS_DRIVER_MINOR so userspace can know if
they are on a fixed kernel or not.

https://lkml.org/lkml/2012/6/3/80
https://bugs.freedesktop.org/show_bug.cgi?id=50892
https://bugs.freedesktop.org/show_bug.cgi?id=50857

!!! STABLE need a custom version of this patch for 3.4 !!!

v2: actually bump the minor version and add comment about stable
v3: do compute the height the ddx was trying to use

[airlied: drop left over debug]
Signed-off-by: NJerome Glisse <jglisse@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The audio clients have to be disabled before disabling the VGA and
switching.  Similarly, enabling the audio client should be done at
last.  Otherwise the audio-side operation stalls, eventually leading
to Oops or lockups.
Tested-by: NJörg-Volker Peetz <jvpeetz@web.de>
Acked-by: NDave Airlie <airlied@redhat.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fix kernel-doc warnings in drivers/net/phy:

Warning(drivers/net/phy/mdio_bus.c:109): No description found for parameter 'mdio_bus_np'
Warning(drivers/net/phy/mdio_bus.c:109): Excess function parameter 'mdio_np' description in 'of_mdio_find_bus'
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This reverts commit 9e612a00.

It incorrectly finds VGA connectors where none are attached, apparently
not noticing that nothing replied to the EDID queries, and happily using
the default EDID modes that have nothing to do with actual hardware.

That in turn then causes X to fall down to the lowest common
denominator, which is usually the default 1024x768 mode that is in the
default EDID and pretty much anything supports).

I'd suggest that if not relying on the HDP pin, the code should at least
check whether it gets valid EDID data back, rather than just assume
there's something on the VGA connector.

Cc: Dave Airlie <airlied@linux.ie>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

As soon as hardware is notified of a transmit, we no longer can assume
skb can be dereferenced, as TX completion might have freed the packet.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>