This patch fixes a segfault in ppp_shutdown_interface() and
ppp_destroy_interface() when a PPP connection is closed. I bisected
the problem to the following commit:
commit c8019bf3af
Author: Wang Chen <wangchen@cn.fujitsu.com>
Date: Thu Nov 20 04:24:17 2008 -0800
netdevice ppp: Convert directly reference of netdev->priv
1. Use netdev_priv(dev) to replace dev->priv.
2. Alloc netdev's private data by alloc_netdev().
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The original ppp_generic code treated the netdev and struct ppp as
independent data structures which were freed separately. In moving the
ppp struct into the netdev, it is now possible for the private data to
be freed before the call to ppp_shutdown_interface(), which is bad.
The kfree(ppp) in ppp_destroy_interface() is also wrong; presumably
ppp hasn't worked since the above commit.
The following patch fixes both problems.
Signed-off-by: James Chapman <jchapman@katalix.com>
Reviewed-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
DMA memory for the jumbo rx page rings was freed incorrectly using the
wrong local variable as the array index.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
kernel BUG at drivers/net/phy/mdio_bus.c:165!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
How?
mdiobus_alloc() sets bus->state = MDIOBUS_ALLOCATED.
mdiobus_register() sets bus->state = MDIOBUS_REGISTERED but then can
fail (mdiobus_scan()) returning an error to the caller.
The caller aborts correctly with mdiobus_free() which does:
if (bus->state == MDIOBUS_ALLOCATED) {
kfree(bus);
return;
}
BUG_ON(bus->state != MDIOBUS_UNREGISTERED);
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
starfire napi ->poll() handler can return work == weight after calling
netif_rx_complete() (if there is no more work). It is illegal and this
patch fixes it.
Reported-by: Alexander Huemer <alexander.huemer@sbg.ac.at>
Tested-by: Alexander Huemer <alexander.huemer@sbg.ac.at>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix pci unmapping problem introduced by commit id
8953f12827 "tlan: Fix small (< 64 bytes)
datagram transmissions".
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
The enc28j60 driver reads incoming packets in the process (workqueue) context,
not in a tasklet or the interrupt context. Thus, we should use netif_rx_ni()
to deliver those packets to the networking layer, instead of netif_rx(). This
way incoming packets don't wait in the incoming queue for the next IRQ to be
serviced.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
The TLAN chip does not support tranmissions smaller than 64
bytes. Smaller transfers need to be padded up to that size. This was
broken by commit id 41873e9aff ("tlan:
get rid of padding buffer").
<URL:http://bugzilla.kernel.org/show_bug.cgi?id=11754>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
During a reset, releasing the swflag after it failed to be acquired would
cause a double unlock of the mutex. Instead, test whether acquisition of
the swflag was successful and if not, do not release the swflag. The reset
must still be done to bring the device to a quiescent state.
This resolves [BUG 12200] BUG: bad unlock balance detected! e1000e
http://bugzilla.kernel.org/show_bug.cgi?id=12200
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
From: Hermann Lauer <Hermann.Lauer@iwr.uni-heidelberg.de>
Attached is a patch which improves the output of ethtool (see below)
to some sensefull values with a sungem fibre card which uses the
sungem interal pcs connected to a serdes chip. The seriallink case in
the driver is untouched.
Most values are hardcoded, because gigabit fibre autoneg is anyways
limited and the driver don't really support much at the moment with
that hardware.
Signed-off-by: David S. Miller <davem@davemloft.net>
As reported by Hermann Lauer, PCS PHY support in the sungem
driver simply doesn't work.
When the chip is reset due to open, or some other similar operation,
the PCS is reset too but we don't program it back into a running
state. The result is no link when the device is brought up.
This partially rectifies the situation for the moment, by kicking
the PCS after a sungem chip reset so that it will renegotiate and
be re-enabled again.
The behavior is still a little bit dodgy as the added renegotiate
make the link take some time after bringing the interface up,
but this is a significant improvement in that things actually work
now :-)
Based almost entirely upon an initial patch by Hermann.
Signed-off-by: David S. Miller <davem@davemloft.net>
Under my 2.6.28-rc6 sparc64, when associating to an AP through my
zd1211rw device, I was seeing kernel log messages like (not exact output):
Kernel unaligned access at TPC[10129b68] zd_mac_rx+0x144/0x32c [zd1211rw]
For the zd1211rw module, on RX, the 80211 packet will be located after
the PLCP header in the skb data buffer. The PLCP header being 5 bytes
long, the 80211 header will start unaligned from an aligned skb
buffer.
As per Documentation/unaligned-memory-access.txt, we must replace the
not unaligned() safe compare_ether_addr() with memcmp() to protect
architectures that require alignment.
Signed-off-by: Shaddy Baddah <shaddy_baddah@hotmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In "ipw2200: Call netif_*_queue() interfaces properly", netif_stop_queue()
and netif_wake_queue() were removed with the reason
"netif_carrier_{on,off}() handles starting and stopping packet flow into
the driver". The patch also removes a valid condition check that
ipw_tx_skb() cannot be called if device is not in STATUS_ASSOCIATED state.
But netif_carrier_off() doesn't guarantee netdev->hard_start_xmit won't
be called because linkwatch event is handled in a delayed workqueue. This
caused a kernel oops reported by Frank Seidel:
https://bugzilla.novell.com/show_bug.cgi?id=397390
This patch fixes the problem by moving the STATUS_ASSOCIATED check back
to ipw_tx_skb(). It also adds a missing netif_carrier_off() call to
ipw_disassociate().
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Chatre, Reinette <reinette.chatre@intel.com>
Tested-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch cleans uCode key table bit map iwl_clear_stations_table
since all stations are cleared also the key table must be.
Since the keys are not removed properly on suspend by mac80211
this may result in exhausting key table on resume leading
to memory corruption during removal
This patch also fixes a memory corruption problem reported in
http://marc.info/?l=linux-wireless&m=122641417231586&w=2 and tracked in
http://bugzilla.kernel.org/show_bug.cgi?id=12040.
When the key is removed a second time the offset is set to 255 - this
index is not valid for the ucode_key_table and corrupts the eeprom pointer
(which is 255 bits from ucode_key_table).
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Reported-by: Carlos R. Mafra <crmafra2@gmail.com>
Reported-by: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The spinlock used in the netx-eth driver was never properly initialized.
This was noticed using CONFIG_DEBUG_SPINLOCK=y
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Packet data read from the RX buffer the when the RSV is at the end of the RX
buffer does not warp around. This causes packet loss, as the actual data is
never read. Fix this by calculating the right packet data location.
Thanks to Shachar Shemesh for suggesting the fix.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Claudio Lanconelli <lanconelli.claudio@eptar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bnx2 chips do not support per MSI vector masking. On 5706/5708, new MSI
address/data are stored only when the MSI enable bit is toggled. As a result,
SMP affinity no longer works in the latest kernel. A more serious problem is
that the driver will no longer receive interrupts when the MSI receiving CPU
goes offline.
The workaround in this patch only addresses the problem of CPU going offline.
When that happens, the driver's timer function will detect that it is making
no forward progress on pending interrupt events and will recover from it.
Eric Dumazet reported the problem.
We also found that if an interrupt is internally asserted while MSI and INTA
are disabled, the chip will end up in the same state after MSI is re-enabled.
The same workaround is needed for this problem.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Tested-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/mlx4: Fix MTT leakage in resize CQ
IB/ehca: Fix problem with generated flush work completions
IB/ehca: Change misleading error message on memory hotplug
mlx4_core: Save/restore default port IB capability mask
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc: Fix system calls on Cell entered with XER.SO=1
powerpc/cell: Fix GDB watchpoints, again
powerpc/mpic: Don't reset affinity for secondary MPIC on boot
powerpc/cell/axon-msi: Retry on missing interrupt
powerpc: Fix boot freeze on machine with empty memory node
powerpc: Fix IRQ assignment for some PCIe devices
powerpc/spufs: Fix spinning in spufs_ps_fault on signal
powerpc/mpc832x_rdb: fix swapped ethernet ids
powerpc: Use generic PHY driver for Marvell 88E1111 PHY on GE Fanuc SBC610
powerpc/85xx: L2 cache size wrong in 8572DS dts
powerpc/virtex: Update defconfigs
powerpc/52xx: update defconfigs
xsysace: Fix driver to use resource_size_t instead of unsigned long
powerpc/virtex: fix various format/casting printk mismatches
powerpc/mpc5200: fix bestcomm Kconfig dependencies
powerpc/44x: Fix 460EX/460GT machine check handling
powerpc/40x: Limit allocable DRAM during early mapping
... by giving the instances' names magic suffix recognized by modpost ;-/
Their ->probe() is __devinit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
a) ->probe() can be __devinit; no need to put it into .text
b) calling __init stuff from it, OTOH, is wrong
c) ->remove() is __devexit fodder
Acked-by: rmk+kernel@arm.linux.org.uk
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ibmtr_resume() is calling ibmtr_probe(), which is devinit. Whether
that's the right thing to do there is a separate question, but
since it's PCMCIA and thus will never compile without HOTPLUG...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ixgbe_init_interrupt_scheme() is called from ixgbe_resume(). Build that
with CONFIG_PM and without CONFIG_HOTPLUG and you've got a problem.
Several helpers called by it also are misannotated __devinit.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 7ff93f8b ("mlx4_core: Multiple port type support") introduced
support for different port types. As part of that support, SET_PORT
is invoked to set the port type during driver startup. However, as a
side-effect, for IB ports the invocation of this command also sets the
port's capability mask to zero (losing the default value set by FW).
To fix this, get the default ib port capabilities (via a MAD_IFC Port
Info query) during driver startup, and save them for use in the
mlx4_SET_PORT command when setting the port-type to Infiniband.
This patch fixes problems with subnet manager (SM) failover such as
<https://bugs.openfabrics.org/show_bug.cgi?id=1183>, which occurred
because the IsTrapSupported bit in the capability mask was zeroed.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
PAUSE frames are only relevant for the real device, broadcasting them
to all macvlan devices can cause a significant load increase.
Reported-by: Ben Greear <greearb@candelatech.com>
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
hp-plus uses 8390p.c, so it should use eip_poll(), not ei_poll().
drivers/built-in.o: In function `hpp_probe1':
hp-plus.c:(.init.text+0x9cbd): undefined reference to `ei_poll'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ath5k driver has too many interrupts per second at idle
http://bugzilla.kernel.org/show_bug.cgi?id=11749
Signed-off-by: Martin Xu <martin.xu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We should only tell the hardware its capable of DMA'ing
to us only what we asked dev_alloc_skb(). Prior to this
it is possible a large RX'd frame could have corrupted
DMA data but for us but we were saved only because we
were previously also pci_map_single()'ing the same large
value. The issue prior to this though was we were unmapping
a smaller amount which the prior DMA patch fixed.
Signed-off-by: Bennyam Malavazi <Bennyam.Malavazi@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This should fix the SW-IOMMU bounce buffer starvation
seen ok kernel.org bugzilla 11811:
http://bugzilla.kernel.org/show_bug.cgi?id=11811
Users on MacBook Pro 3.1/MacBook v2 would see something like:
DMA: Out of SW-IOMMU space for 4224 bytes at device 0000:0b:00.0
Unfortunately its only easy to trigger on MacBook Pro 3.1/MacBook v2
so far so its difficult to debug (even with swiotlb=force).
We were pci_unmap_single()'ing less bytes than what we called
for with pci_map_single() and as such we were starving
the swiotlb from its 64MB amount of bounce buffers. We remain
consistent and now always use sc->rxbufsize for RX. While at
it we update the beacon DMA maps as well to only use the data
portion of the skb, previous to this we were pci_map_single()'ing
more data for beaconing than what we tell the hardware it can use,
therefore pushing more iotlb abuse.
Still not sure why this is so easily triggerable on
MacBook Pro 3.1, it may be the hardware configuration
tends to use more memory > 3GB mark for DMA.
Signed-off-by: Maciej Zenczykowski <zenczykowski@gmail.com>
Signed-off-by: Bennyam Malavazi <Bennyam.Malavazi@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
For the RX DMA fix for iwlwifi ("iwlagn: fix RX skb alignment") Luis
pointed out:
> aligned_dma_addr can obviously be > real_dma_addr at this point, what
> guarantees we can use it on our own whim?
I asked around, and he's right, there may be platforms that do not allow
passing such such an address to the DMA API functions. This patch
changes it by using the proper dma_sync_single_range_for_cpu API
invented for this purpose.
Cc: Luis R. Rodriguez <mcgrof@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
PHY is mostly compatible with the existing VSC8244 PHY. The init sequence
is different and the interrupt mask lacks some bits present in the VSC8244.
Rather than making a copy of the existing VSC234x config_intr function and
change one constant, I modify it to select the interrupt mask based on
which driver is calling it. This lets it be used by both drivers.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
remove redundant argument comments in files of drivers/net/*
Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix hp-plus driver link errors.
Builds as loadable module and kernel image driver.
All drivers that use 8390.o or 8390p.o that will build on
i386 with MCA/PCI/EISA/ISA were built successfully both
=m and =y.
drivers/built-in.o: In function `hpp_open':
hp-plus.c:(.text+0xac06c): undefined reference to `eip_interrupt'
hp-plus.c:(.text+0xac0d7): undefined reference to `eip_open'
drivers/built-in.o: In function `hpp_close':
hp-plus.c:(.text+0xac1bb): undefined reference to `eip_close'
drivers/built-in.o: In function `hpp_probe1':
hp-plus.c:(.init.text+0xa98a): undefined reference to `NS8390p_init'
drivers/built-in.o: In function `hp_plus_probe':
(.init.text+0xa9fe): undefined reference to `__alloc_eip_netdev'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hi,
after noticing that my Netgear FA411 (PCMCIA-NIC) [1] stopped working with
the release of the 2.6.25 kernel (sidux-version), I checked the
respective driver sources and noticed that the pcnet_cs driver bailed
out with "use axnet_cs instead" for the Netgear FA411, but axnet_cs
doesn't claim this ID.
I compiled a kernel with the PCMCIA-ID for the netgear card moved to
axnet_cs from pcnet_cs which worked. I then contacted sidux-kernel
maintainer Stefan Lippers-Hollmann who turned the info into this patch
and integrated it into the kernel:
<http://svn.berlios.de/svnroot/repos/fullstory/linux-sidux-2.6/trunk/debian/patches/features/2.6.27.4_PCMCIA_move-PCMCIA-ID-for-Netgear-FA411-from-pcnet_cs-to-axnet_cs.patch>
This works for me and AFAIK there were no reports of any breakage for
other devices on sidux-support.
This looks like a trivial patch, but since I have very limited
experience with kernel modifications I might be woefully wrong there.
But if there are no side effects of this patch, is it possible to get it
into the official kernel?
I can provide more detailed information on the affected hardware if
necessary.
-cord
[1]
Socket 1 Device 0: [axnet_cs] (bus ID: 1.0)
Configuration: state: on
Product Name: NETGEAR FA411 Fast Ethernet
Identification: manf_id: 0x0149 card_id: 0x0411
function: 6 (network)
prod_id(1): "NETGEAR" (0x9aa79dc3)
prod_id(2): "FA411" (0x40fad875)
prod_id(3): "Fast Ethernet" (0xb4be14e3)
prod_id(4): --- (---)
From: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Date: Sat, 1 Nov 2008 23:53:04 +0000
Subject: PCMCIA: move PCMCIA ID for Netgear FA411 from pcnet_cs to axnet_cs:
Since kernel 2.6.25, commit 61da96be07
(pcnet_cs: if AX88190-based card, printk "use axnet_cs instead" message.),
pcnet_cs bails out with "use axnet_cs instead" for the Netgear FA411, but
axnet_cs doesn't claim this ID.
Socket 1 Device 0: [axnet_cs] (bus ID: 1.0)
Configuration: state: on
Product Name: NETGEAR FA411 Fast Ethernet
Identification: manf_id: 0x0149 card_id: 0x0411
function: 6 (network)
prod_id(1): "NETGEAR" (0x9aa79dc3)
prod_id(2): "FA411" (0x40fad875)
prod_id(3): "Fast Ethernet" (0xb4be14e3)
prod_id(4): --- (---)
Cc: stable <stable@kernel.org> [2.6.25, 2.6.26, 2.6.27]
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Cord Walter <qord@cwalter.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the case when the phy_ids is mostly Fs and in some case 0x0
due to broken hardware.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add AX_MEDIUM_ENCK also when speed = 10/100Mbps. This allows my belkin
f5d5055 to work with my 100Mbps switch and with an old 10Mbps ISA card.
Without this patch, the card is recognized and the interface is brought
up fine, but no packets actually flow through the interface.
Signed-off-by: Pantelis Koukousoulas <pktoss@gmail.com>
Acked-by: David Hollis <dhollis@davehollis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When mv643xx_eth allocates skbuffs, it adds
'dma_get_cache_alignment() - 1' to the length it needs, so that it can
align the skb's ->data pointer to a cache boundary. When checking
whether a transmitted skbuff can be reused as a receive buffer, these
bytes needs to be included into the minimum bound for the recycle check.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Update to change of mii_bus interface and fix some warning.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rxfd->frag_info is a __le64, IPG_RFI_FRAGLEN is a cpu-endian
constant and wants to be outside of the le64_to_cpu. Fixed
in multiple places.
Also an occurrence where le64_to_cpu was used instead of cpu_to_le64
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
