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When the mvneta driver is compiled as module, the clock is disabled before
it's loading. This will reset the registers values and all configuration
made by the bootloader.
This patch sets the "sgmii serdes configuration" register to a magical value
found in:
https://github.com/yellowback/ubuntu-precise-armadaxp/blob/master/arch/arm/mach-armadaxp/armada_xp_family/ctrlEnv/mvCtrlEnvLib.c
With this change, the interrupts are working/generated and ethernet is
working.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the mvneta driver is compiled, it'll be loaded with clocks disabled.
This implies that the clocks should be enabled again before any register
access or it'll hang.
To fix it:
- enable clock earlier
- move timer callback after setting timer.data
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On Mon, 2013-07-29 at 08:30 -0700, Eric Dumazet wrote:
> On Mon, 2013-07-29 at 13:09 +0100, Luis Henriques wrote:
>
> >
> > I confirm that I can't reproduce the issue using this patch.
> >
>
> Thanks, I'll send a polished patch, as this one had an error if
> build_skb() returns NULL (in case sk_buff allocation fails)
Please try the following patch : It should use 2K frags instead of 4K
for normal 1500 mtu
Thanks !
[PATCH] atl1c: use custom skb allocator
We had reports ( https://bugzilla.kernel.org/show_bug.cgi?id=54021 )
that using high order pages for skb allocations is problematic for atl1c
We do not know exactly what the problem is, but we suspect that crossing
4K pages is not well supported by this hardware.
Use a custom allocator, using page allocator and 2K fragments for
optimal stack behavior. We might make this allocator generic
in future kernels.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Luis Henriques <luis.henriques@canonical.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, it is not possible to use neither NLM_F_EXCL nor
NLM_F_REPLACE from genetlink. This is due to this checking in
genl_family_rcv_msg:
if (nlh->nlmsg_flags & NLM_F_DUMP)
NLM_F_DUMP is NLM_F_MATCH|NLM_F_ROOT. Thus, if NLM_F_EXCL or
NLM_F_REPLACE flag is set, genetlink believes that you're
requesting a dump and it calls the .dumpit callback.
The solution that I propose is to refine this checking to
make it stricter:
if ((nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP)
And given the combination NLM_F_REPLACE and NLM_F_EXCL does
not make sense to me, it removes the ambiguity.
There was a patch that tried to fix this some time ago (0ab03c2
netlink: test for all flags of the NLM_F_DUMP composite) but it
tried to resolve this ambiguity in *all* existing netlink subsystems,
not only genetlink. That patch was reverted since it broke iproute2,
which is using NLM_F_ROOT to request the dump of the routing cache.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is inspired by a5cc68f3d6 "af_key: fix info leaks in notify
messages". There are some struct members which don't get initialized
and could disclose small amounts of private information.
Acked-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Don't test for having link and let hardware deal with this situation.
Without this patch I see a machine running an -rt patched Linux being
stuck in sch_direct_xmit when it looses link while there is still a
packet to be sent. In this case the fec_enet_start_xmit routine returned
NETDEV_TX_BUSY which makes the network stack reschedule the packet and
so sch_direct_xmit calls fec_enet_start_xmit again.
I failed to reproduce a complete hang without -rt, but I think the
problem exists there, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tmem is not supported on arm or arm64 yet. Will revert this
once the Xen hypervisor supports it.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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The current BMIPS SMP code assumes that the slave CPU is physical and
logical CPU 1, but on some systems such as BCM3368, the slave CPU is
physical CPU0. Fix the code to read the physical CPU (thread ID) we are
running this code on, and adjust the relocation vector address based on
it. This allows bringing up the second CPU on BCM3368 for instance.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: blogic@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/5621/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Commit 4df715aa ("MIPS: BMIPS: support booting from physical CPU other
than 0") changed the interupt routing when we are booting from physical
CPU 0, but the settings are actually correct if we are booting from
physical CPU 0 or CPU 1. Revert that specific change.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: blogic@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/5622/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Commit 6e7582bf35b8a5a330fd08b398ae445bac86917a
"MIPS: PowerTV: use free_reserved_area() to simplify code"
merged in 3.11-rc1, broke the build for the powertv defconfig with
the following build error:
arch/mips/powertv/asic/asic_devices.c: In function 'platform_release_memory':
arch/mips/powertv/asic/asic_devices.c:533:7: error: passing argument 1 of
'free_reserved_area' makes pointer from integer without a cast [-Werror]
The free_reserved_area() function expects a void * pointer for the start
address and a void * pointer for the end one.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5624/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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If neither BCM47XX_SSD nor BCM47XX_BCMA is selected, then no
CPU type is available leading to build problems. We fix
this problem by using MIPS32r1 as the default CPU type for
the BCM47XX platform.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5618/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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It wasn't until GCC 4.3 I believe that the __SIZEOF_*__ predefined macros
were added. The change below switches <uapi/asm/siginfo.h> to the
_MIPS_SZLONG macro so that compilation with e.g. GCC 4.1.2 succeeds.
This is a user API header so I think this is even more important, for
older userland support. The change adds an unsuccessful default too, to
catch any compiler configuration oddities.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5630/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Fix build error below:
arch/mips/include/asm/mach-generic/spaces.h:29:0: warning:
"UNCAC_BASE" redefined [enabled by default]
In file included from arch/mips/include/asm/addrspace.h:13:0,
from arch/mips/include/asm/barrier.h:11,
from arch/mips/include/asm/bitops.h:18,
from include/linux/bitops.h:22,
from include/linux/kernel.h:10,
from include/asm-generic/bug.h:13,
from arch/mips/include/asm/bug.h:41,
from include/linux/bug.h:4,
from include/linux/page-flags.h:9,
from kernel/bounds.c:9:
arch/mips/include/asm/mach-ar7/spaces.h:20:0: note: this is the
location of the previous definition
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5583/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Unbinding an event channel (either with the ioctl or when the evtchn
device is closed) may deadlock because disable_irq() is called with
port_user_lock held which is also locked by the interrupt handler.
Think of the IOCTL_EVTCHN_UNBIND is being serviced, the routine has
just taken the lock, and an interrupt happens. The evtchn_interrupt
is invoked, tries to take the lock and spins forever.
A quick glance at the code shows that the spinlock is a local IRQ
variant. Unfortunately that does not help as "disable_irq() waits for
the interrupt handler on all CPUs to stop running. If the irq occurs
on another VCPU, it tries to take port_user_lock and can't because
the unbind ioctl is holding it." (from David). Hence we cannot
depend on the said spinlock to protect us. We could make it a system
wide IRQ disable spinlock but there is a better way.
We can piggyback on the fact that the existence of the spinlock is
to make get_port_user() checks be up-to-date. And we can alter those
checks to not depend on the spin lock (as it's protected by u->bind_mutex
in the ioctl) and can remove the unnecessary locking (this is
IOCTL_EVTCHN_UNBIND) path.
In the interrupt handler we cannot use the mutex, but we do not
need it.
"The unbind disables the irq before making the port user stale, so when
you clear it you are guaranteed that the interrupt handler that might
use that port cannot be running." (from David).
Hence this patch removes the spinlock usage on the teardown path
and piggybacks on disable_irq happening before we muck with the
get_port_user() data. This ensures that the interrupt handler will
never run on stale data.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
[v1: Expanded the commit description a bit]
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Make sure the reserved fields, and padding (if any), are
fully initialized.
Based upon a patch by Dan Carpenter and feedback from
Joe Perches.
Signed-off-by: David S. Miller <davem@davemloft.net>
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RT Systems makes many usb serial cables based on the ftdi_sio driver for
programming various amateur radios. This patch is a full listing of
their current product offerings and should allow these cables to all
be recognized.
Signed-off-by: Rick Farina (Zero_Chaos) <zerochaos@gentoo.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Using below configs, the compile will have error:
ERROR: "ehci_init_driver" undefined!
.config:
CONFIG_USB_CHIPIDEA=m
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_CHIPIDEA_DEBUG=y
The reason is chipidea host uses symbol from ehci, but ehci
is not compiled. Let the chipidea host depend on
ehci even it is built as module.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix the following build warnings on x86:
drivers/usb/chipidea/core.c: In function 'hw_phymode_configure':
drivers/usb/chipidea/core.c:226:3: warning: large integer implicitly truncated to unsigned type [-Woverflow]
drivers/usb/chipidea/core.c:230:3: warning: large integer implicitly truncated to unsigned type [-Woverflow]
drivers/usb/chipidea/core.c:243:3: warning: large integer implicitly truncated to unsigned type [-Woverflow]
drivers/usb/chipidea/core.c:246:3: warning: large integer implicitly truncated to unsigned type [-Woverflow]
Reported-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Enable lifecyle management (reboot, shutdown...) from the toolstack
for ARM guests.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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On ARM64, when CONFIG_XEN=y, the compilation will fail because CPU hotplug is
not yet supported with XEN. For now, disable it.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
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Only create the delayed resume workqueue if we are running in the same domain
as xenstored and issue a warning if the workqueue creation fails.
Move the work initialization to the device probe so it is done only once.
Signed-off-by: Aurelien Chartier <aurelien.chartier@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
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The name of udc state attribute file under sysfs is registered as
"state", while usb_gadget_set_state take it as "status" when it's
going to update. This patch fixes the typo.
Signed-off-by: Rong Wang <Rong.Wang@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: <stable@kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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The compatibility layer which the USBF_PHONET_INCLUDED was a part of
is no longer present - the USBF_PHONET_INCLUDED is not #defined by anyone
anymore, so the ifndef is always true. Removing it.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.
Introduced by commit 59835a (usb: gadget: multi: use
function framework for ACM.)
Make rndis_do_config() consistent with cdc_do_config() in the way it
handles returning the PTR_ERR(f_acm_*).
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This patch fixes a VT mode check to make sure VLAN filters are disabled when
in promisc mode and VT is not enabled.
The problem with the previous check was that:
E1000_MRQC_ENABLE_VMDQ is defined as 0x00000003
but when not in VT mode:
mrqc |= E1000_MRQC_ENABLE_RSS_4Q (0x00000002)
So the above check will trigger regardless if VT mode is being used or not.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes an issue with the 82598EB device, where lldpad is causing Tx
Hangs on the card as soon as it attempts to configure DCB for the device. The
adapter will continually Tx hang and reset in a loop.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Stable <stable@vger.kernel.org>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Jack Morgan <jack.morgan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Silence compiler warnings on 64-bit systems introduced by commit
05cf0dec ("USB: mos7840: fix race in led handling") which uses the
usb-serial data pointer to temporarily store the device type during
probe but failed to add the required casts.
[gregkh - change uintptr_t to unsigned long]
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Requesting external module with cb_lock taken can result in
the deadlock like showed below:
[ 2458.111347] Showing all locks held in the system:
[ 2458.111347] 1 lock held by NetworkManager/582:
[ 2458.111347] #0: (cb_lock){++++++}, at: [<ffffffff8162bc79>] genl_rcv+0x19/0x40
[ 2458.111347] 1 lock held by modprobe/603:
[ 2458.111347] #0: (cb_lock){++++++}, at: [<ffffffff8162baa5>] genl_lock_all+0x15/0x30
[ 2461.579457] SysRq : Show Blocked State
[ 2461.580103] task PC stack pid father
[ 2461.580103] NetworkManager D ffff880034b84500 4040 582 1 0x00000080
[ 2461.580103] ffff8800197ff720 0000000000000046 00000000001d5340 ffff8800197fffd8
[ 2461.580103] ffff8800197fffd8 00000000001d5340 ffff880019631700 7fffffffffffffff
[ 2461.580103] ffff8800197ff880 ffff8800197ff878 ffff880019631700 ffff880019631700
[ 2461.580103] Call Trace:
[ 2461.580103] [<ffffffff817355f9>] schedule+0x29/0x70
[ 2461.580103] [<ffffffff81731ad1>] schedule_timeout+0x1c1/0x360
[ 2461.580103] [<ffffffff810e69eb>] ? mark_held_locks+0xbb/0x140
[ 2461.580103] [<ffffffff817377ac>] ? _raw_spin_unlock_irq+0x2c/0x50
[ 2461.580103] [<ffffffff810e6b6d>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[ 2461.580103] [<ffffffff81736398>] wait_for_completion_killable+0xe8/0x170
[ 2461.580103] [<ffffffff810b7fa0>] ? wake_up_state+0x20/0x20
[ 2461.580103] [<ffffffff81095825>] call_usermodehelper_exec+0x1a5/0x210
[ 2461.580103] [<ffffffff817362ed>] ? wait_for_completion_killable+0x3d/0x170
[ 2461.580103] [<ffffffff81095cc3>] __request_module+0x1b3/0x370
[ 2461.580103] [<ffffffff810e6b6d>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[ 2461.580103] [<ffffffff8162c5c9>] ctrl_getfamily+0x159/0x190
[ 2461.580103] [<ffffffff8162d8a4>] genl_family_rcv_msg+0x1f4/0x2e0
[ 2461.580103] [<ffffffff8162d990>] ? genl_family_rcv_msg+0x2e0/0x2e0
[ 2461.580103] [<ffffffff8162da1e>] genl_rcv_msg+0x8e/0xd0
[ 2461.580103] [<ffffffff8162b729>] netlink_rcv_skb+0xa9/0xc0
[ 2461.580103] [<ffffffff8162bc88>] genl_rcv+0x28/0x40
[ 2461.580103] [<ffffffff8162ad6d>] netlink_unicast+0xdd/0x190
[ 2461.580103] [<ffffffff8162b149>] netlink_sendmsg+0x329/0x750
[ 2461.580103] [<ffffffff815db849>] sock_sendmsg+0x99/0xd0
[ 2461.580103] [<ffffffff810bb58f>] ? local_clock+0x5f/0x70
[ 2461.580103] [<ffffffff810e96e8>] ? lock_release_non_nested+0x308/0x350
[ 2461.580103] [<ffffffff815dbc6e>] ___sys_sendmsg+0x39e/0x3b0
[ 2461.580103] [<ffffffff810565af>] ? kvm_clock_read+0x2f/0x50
[ 2461.580103] [<ffffffff810218b9>] ? sched_clock+0x9/0x10
[ 2461.580103] [<ffffffff810bb2bd>] ? sched_clock_local+0x1d/0x80
[ 2461.580103] [<ffffffff810bb448>] ? sched_clock_cpu+0xa8/0x100
[ 2461.580103] [<ffffffff810e33ad>] ? trace_hardirqs_off+0xd/0x10
[ 2461.580103] [<ffffffff810bb58f>] ? local_clock+0x5f/0x70
[ 2461.580103] [<ffffffff810e3f7f>] ? lock_release_holdtime.part.28+0xf/0x1a0
[ 2461.580103] [<ffffffff8120fec9>] ? fget_light+0xf9/0x510
[ 2461.580103] [<ffffffff8120fe0c>] ? fget_light+0x3c/0x510
[ 2461.580103] [<ffffffff815dd1d2>] __sys_sendmsg+0x42/0x80
[ 2461.580103] [<ffffffff815dd222>] SyS_sendmsg+0x12/0x20
[ 2461.580103] [<ffffffff81741ad9>] system_call_fastpath+0x16/0x1b
[ 2461.580103] modprobe D ffff88000f2c8000 4632 603 602 0x00000080
[ 2461.580103] ffff88000f04fba8 0000000000000046 00000000001d5340 ffff88000f04ffd8
[ 2461.580103] ffff88000f04ffd8 00000000001d5340 ffff8800377d4500 ffff8800377d4500
[ 2461.580103] ffffffff81d0b260 ffffffff81d0b268 ffffffff00000000 ffffffff81d0b2b0
[ 2461.580103] Call Trace:
[ 2461.580103] [<ffffffff817355f9>] schedule+0x29/0x70
[ 2461.580103] [<ffffffff81736d4d>] rwsem_down_write_failed+0xed/0x1a0
[ 2461.580103] [<ffffffff810bb200>] ? update_cpu_load_active+0x10/0xb0
[ 2461.580103] [<ffffffff8137b473>] call_rwsem_down_write_failed+0x13/0x20
[ 2461.580103] [<ffffffff8173492d>] ? down_write+0x9d/0xb2
[ 2461.580103] [<ffffffff8162baa5>] ? genl_lock_all+0x15/0x30
[ 2461.580103] [<ffffffff8162baa5>] genl_lock_all+0x15/0x30
[ 2461.580103] [<ffffffff8162cbb3>] genl_register_family+0x53/0x1f0
[ 2461.580103] [<ffffffffa01dc000>] ? 0xffffffffa01dbfff
[ 2461.580103] [<ffffffff8162d650>] genl_register_family_with_ops+0x20/0x80
[ 2461.580103] [<ffffffffa01dc000>] ? 0xffffffffa01dbfff
[ 2461.580103] [<ffffffffa017fe84>] nl80211_init+0x24/0xf0 [cfg80211]
[ 2461.580103] [<ffffffffa01dc000>] ? 0xffffffffa01dbfff
[ 2461.580103] [<ffffffffa01dc043>] cfg80211_init+0x43/0xdb [cfg80211]
[ 2461.580103] [<ffffffff810020fa>] do_one_initcall+0xfa/0x1b0
[ 2461.580103] [<ffffffff8105cb93>] ? set_memory_nx+0x43/0x50
[ 2461.580103] [<ffffffff810f75af>] load_module+0x1c6f/0x27f0
[ 2461.580103] [<ffffffff810f2c90>] ? store_uevent+0x40/0x40
[ 2461.580103] [<ffffffff810f82c6>] SyS_finit_module+0x86/0xb0
[ 2461.580103] [<ffffffff81741ad9>] system_call_fastpath+0x16/0x1b
[ 2461.580103] Sched Debug Version: v0.10, 3.11.0-0.rc1.git4.1.fc20.x86_64 #1
Problem start to happen after adding net-pf-16-proto-16-family-nl80211
alias name to cfg80211 module by below commit (though that commit
itself is perfectly fine):
commit fb4e156886ce6e8309e912d8b370d192330d19d3
Author: Marcel Holtmann <marcel@holtmann.org>
Date: Sun Apr 28 16:22:06 2013 -0700
nl80211: Add generic netlink module alias for cfg80211/nl80211
Reported-and-tested-by: Jeff Layton <jlayton@redhat.com>
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Reviewed-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the ready bit in the transmit buffer descriptor (TxBD[R])
is previously detected as not set during a prior frame transmission,
then the ENET_TDAR[TDAR] bit is cleared at a later time, even if
additional TxBDs were added to the ring and the ENET_TDAR[TDAR]
bit is set. This results in frames not being transmitted until
there is a 0-to-1 transition on ENET_TDAR[TDAR].
Workarounds:
code can use the transmit frame interrupt flag (ENET_EIR[TXF])
as a method to detect whether the ENET has completed transmission
and the ENET_TDAR[TDAR] has been cleared. If ENET_TDAR[TDAR] is
detected as cleared when packets are queued and waiting for transmit,
then a write to the TDAR bit will restart TxBD processing.
This case main happen when loading is light. A ethernet package may
not send out utile next package put into tx queue.
How to test:
while [ true ]
do
ping <IP> -s 10000 -w 4
ping <IP> -s 6000 -w 2
ping <IP> -s 4000 -w 2
ping <IP> -s 10000 -w 2
done
You will see below result in overnight test.
6008 bytes from 10.192.242.116: seq=1 ttl=128 time=0.722 ms
4008 bytes from 10.192.242.116: seq=0 ttl=128 time=1001.008 ms
4008 bytes from 10.192.242.116: seq=1 ttl=128 time=1.010 ms
10008 bytes from 10.192.242.116: seq=0 ttl=128 time=0.896 ms
After apply this patch, >1000ms delay disappear.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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o Initialize proper interrupt handler for 83xx.
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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o When configuring guest VLAN after PVID configuration, VF was loading
with previously configured PVID. Clear the PVID which was previously
configured before configuring guest VLAN.
o Display guest VLAN when it is configured
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Operation type and command type is not set correct in back channel
response.
Signed-off-by: Pratik Pujar <pratik.pujar@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Work function needs to be initialized before we participate in
inter device communication (IDC).
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit ebe7fdbaf3e90ea22feade6c9f5e50f42b23b6d8.
This change is not correct. GFP_DMA is not necessary for
this device.
There is some other problem causing this bug.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 18d627113b83 (firewire: prevent dropping of completed iso packet
header data) was intended to be an obvious bug fix, but libdc1394 and
FlyCap2 depend on the old behaviour by ignoring all returned information
and thus not noticing that not all packets have been received yet. The
result was that the video frame buffers would be saved before they
contained the correct data.
Reintroduce the old behaviour for old clients.
Tested-by: Stepan Salenikovich <stepan.salenikovich@gmail.com>
Tested-by: Josep Bosch <jep250@gmail.com>
Cc: <stable@vger.kernel.org> # 3.4+
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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Platform drivers use "platform:" prefix in module alias.
Also use DRIVER_NAME in MODULE_ALIAS to make module autoloading work.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The function tty_port_tty_hangup() could leak a reference to the tty_struct:
struct tty_struct *tty = tty_port_tty_get(port);
if (tty && (!check_clocal || !C_CLOCAL(tty))) {
tty_hangup(tty);
tty_kref_put(tty);
}
If tty != NULL and the second condition is false we never call tty_kref_put and
the reference is leaked.
Fix by always calling tty_kref_put() which accepts a NULL argument.
The patch fixes a regression introduced by commit aa27a094.
Acked-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org> # 3.10
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Without this patch the driver waits ~1 ms for the UART to become idle. At
115200n8 this time is (theoretically) enough to transfer 11.5 characters
(= 115200 bits/s / (10 Bits/char) * 1ms). As the mxs-auart has a fifo size
of 16 characters the clock is gated too early. The problem is worse for
lower baud rates.
This only happens to really shut down the transmitter in the middle of a
transfer if /dev/ttyAPPx isn't opened in userspace (e.g. by a getty) but
was at least once (because the bootloader doesn't disable the transmitter).
So increase the timeout to 20 ms which should be enough for 9600n8, too.
Moreover skip gating the clock if the timeout is elapsed.
Cc: stable@vger.kernel.org # v2.6.39+
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The handler needs to ack the pending events before actually handling them.
Otherwise a new event might come in after it it considered non-pending or
handled and is acked then without being handled. So this event is only
noticed when the next interrupt happens.
Without this patch an i.MX28 based machine running an rt-patched kernel
regularly hangs during boot.
Cc: stable@vger.kernel.org # v2.6.39+
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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atl1c uses netdev_alloc_skb to refill its rx dma ring, but that call makes no
guarantees about the suitability of the memory for use in DMA. As a result
we've gotten reports of atl1c drivers occasionally hanging and needing to be
reset:
https://bugzilla.kernel.org/show_bug.cgi?id=54021
Fix this by modifying the call to use the internal version __netdev_alloc_skb,
where you can set the gfp_mask explicitly to include GFP_DMA.
Tested by two reporters in the above bug, who have the hardware to validate it.
Both report immediate cessation of the problem with this patch
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Jay Cliburn <jcliburn@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: stable@vger.kernel.org
Tested-by: Luis Henriques <luis.henriques@canonical.com>
Tested-by: Vincent Alquier <vincent.alquier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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The patch fixes following warning. The PCI device might have been
disabled somewhere else when we have EEH errors during early stage.
Device tg3 disabling already-disabled device
WARNING: at drivers/pci/pci.c:1403
:
NIP [c00000000044fd5c] .pci_disable_device+0xcc/0xe0
LR [c00000000044fd58] .pci_disable_device+0xc8/0xe0
Call Trace:
[c000003f80bc7370] [c00000000044fd58] .pci_disable_device+0xc8/0xe0
[c000003f80bc73f0] [d00000001cfe8fc0] .tg3_init_one+0x2f0/0x19f0 [tg3]
[c000003f80bc74d0] [c0000000004534e8] .local_pci_probe+0x68/0xb0
[c000003f80bc7560] [c0000000004537c8] .pci_device_probe+0x198/0x1a0
[c000003f80bc7610] [c0000000004f9e98] .driver_probe_device+0xd8/0x450
[c000003f80bc76a0] [c0000000004fa3bc] .__driver_attach+0x10c/0x110
[c000003f80bc7730] [c0000000004f6e94] .bus_for_each_dev+0x94/0x100
[c000003f80bc77d0] [c0000000004f9634] .driver_attach+0x34/0x50
[c000003f80bc7850] [c0000000004f8f98] .bus_add_driver+0x288/0x380
[c000003f80bc78f0] [c0000000004fae2c] .driver_register+0x9c/0x200
[c000003f80bc7980] [c000000000453214] .__pci_register_driver+0x64/0x90
[c000003f80bc7a10] [d00000001cff7a60] .tg3_driver_init+0x2c/0x40 [tg3]
[c000003f80bc7a80] [c00000000000b424] .do_one_initcall+0x144/0x1f0
[c000003f80bc7b70] [c0000000001244a0] .load_module+0x1f30/0x2700
[c000003f80bc7d40] [c000000000124e80] .SyS_finit_module+0xc0/0x110
[c000003f80bc7e30] [c000000000009dd4] syscall_exit+0x0/0x98
Reported-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Acked-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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While EEH error happens, we might not have network device instance
(struct net_device) yet. So we can't access the instance safely and
check its link state, which causes kernel crash. The patch fixes it.
EEH: Frozen PE#2 on PHB#3 detected
EEH: This PCI device has failed 1 times in the last hour
EEH: Notify device drivers to shutdown
(NULL net_device): PCI I/O error detected
Unable to handle kernel paging request for data at address 0x00000048
Faulting instruction address: 0xd00000001c9387a8
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=1024 NUMA PowerNV
:
NIP [d00000001c9387a8] .tg3_io_error_detected+0x78/0x2a0 [tg3]
LR [d00000001c9387a4] .tg3_io_error_detected+0x74/0x2a0 [tg3]
Call Trace:
[c000003f93a0f960] [d00000001c9387a4] .tg3_io_error_detected+0x74/0x2a0 [tg3]
[c000003f93a0fa30] [c00000000003844c] .eeh_report_error+0xac/0x120
[c000003f93a0fac0] [c0000000000371bc] .eeh_pe_dev_traverse+0x8c/0x150
[c000003f93a0fb60] [c000000000038858] .eeh_handle_normal_event+0x128/0x3d0
[c000003f93a0fbf0] [c000000000038db8] .eeh_handle_event+0x2b8/0x2c0
[c000003f93a0fc90] [c000000000038e80] .eeh_event_handler+0xc0/0x170
[c000003f93a0fd30] [c0000000000cc000] .kthread+0xf0/0x100
[c000003f93a0fe30] [c00000000000a0dc] .ret_from_kernel_thread+0x5c/0x80
Reported-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Acked-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When (integer) sysctl values are expressed in ms and have to be
represented internally as jiffies. The msecs_to_jiffies function
returns an unsigned long, which gets assigned to the integer.
This patch prevents the value to be assigned if bigger than
INT_MAX, done in a similar way as in cba9f3 ("Range checking in
do_proc_dointvec_(userhz_)jiffies_conv").
Signed-off-by: Francesco Fusco <ffusco@redhat.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
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Without this patch, the fields app_solicit, gc_thresh1, gc_thresh2,
gc_thresh3, proxy_qlen, ucast_solicit, mcast_solicit could have
assumed negative values when setting large numbers.
Signed-off-by: Francesco Fusco <ffusco@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix race in LED handling introduced by commit 0eafe4de ("USB: serial:
mos7840: add support for MCS7810 devices") which reused the port control
urb for manipulating the LED without making sure that the urb is not
already in use. This could lead to the control urb being manipulated
while in flight.
Fix by adding a dedicated LED urb and ctrlrequest along with a LED-busy
flag to handle concurrency.
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix race in device-type detection introduced by commit 0eafe4de ("USB:
serial: mos7840: add support for MCS7810 devices") which used a static
variable to hold the device type.
Move type detection to probe and use serial data to store the device
type.
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix race in mos7840_get_reg which unconditionally manipulated the
control urb (which may already be in use) by adding a control-urb busy
flag.
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This adds a driver for the Suunto ANT+ USB device, exposing it as a usb
serial device. This lets the userspace "gant" program to talk to the
device to communicate over the ANT+ protocol to any devices it finds.
Reported-by: Steinar Gunderson <sgunderson@bigfoot.com>
Tested-by: Steinar Gunderson <sgunderson@bigfoot.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Arnaud Patard \(Rtp\)
Eric Dumazet
Pablo Neira
Dan Carpenter
Uwe Kleine-König
Stefano Stabellini
Florian Fainelli
Markos Chandras
Maciej W. Rozycki
Steven J. Hill
David Vrabel
David S. Miller
Rick Farina (Zero_Chaos)
Peter Chen
Fabio Estevam
Julien Grall
Aurelien Chartier
Rong Wang
Andrzej Pietrasiewicz
Linus Torvalds
Emil Tantilov
Jacob Keller
Johan Hovold
Stanislaw Gruszka
Frank Li
Manish Chopra
Pratik Pujar
Jitendra Kalsaria
Clemens Ladisch
Axel Lin
Gianluca Anzolin
Neil Horman
Vineet Gupta
Gavin Shan
Francesco Fusco
Greg Kroah-Hartman