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This patch adds the missing netif_napi_del() to the flexcan_remove() function.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch factors out freeze and unfreeze of the CAN core into seperate
functions. Experiments have shown that the transition from and to freeze mode
may take several microseconds, especially the time entering the freeze mode
depends on the current bitrate.
This patch adds a while loop which polls the Freeze Mode ACK bit (FRZ_ACK) that
indicates a successfull mode change. If the function runs into a timeout a
error value is returned.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch moves the transceiver enable and disable into seperate functions,
where the NULL pointer check is hidden.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
In flexcan_chip_enable() and flexcan_chip_disable() fixed delays are used.
Experiments have shown that the transition from and to low power mode may take
several microseconds.
This patch adds a while loop which polls the Low Power Mode ACK bit (LPM_ACK)
that indicates a successfull mode change. If the function runs into a timeout a
error value is returned.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
If flexcan_chip_start() in flexcan_open() fails, the interrupt is not freed,
this patch adds the missing cleanup.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
When shutting down the CAN interface (ifconfig canX down) during high CAN bus
loads, the CAN core might hang and freeze the whole CPU.
This patch fixes the shutdown sequence by first disabling the CAN core then
disabling all interrupts.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Add the USB device ID for the D-Link DUB-1312 USB 3.0 to Gigabit Ethernet
Adapter to the AX88179/178A driver.
Signed-off-by: Gerry Demaret <gerry@tigron.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Without this patch b44_check_phy() was called when the phy called the
adjust callback. This method only change the mac duplex mode when the
carrier was off. When the phy changed the duplex mode after the carrier
was on the mac was not changed. This happened when an external phy was
used.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When support for external phys was added to b44, the calls to start and
stop the phy were missing in the mac driver. This adds the calls to
phy_start() and phy_stop().
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The recent commit "fe1624c bna: RX Filter Enhancements" disables
VLAN tag stripping if the NIC is in promiscuous mode. This causes
__vlan_hwaccel_put_tag() is called when the stripping is disabled.
Because of this VLAN over bna does not work and causes BUGs in conjunction
with openvswitch like this:
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Redefine the RXD_ERR_MASK to include only relevant error bits. This fixes
a customer reported issue of randomly dropping packets on the 5719.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As many Surface Pro I & II users have found out, the mwifiex_usb
doesn't support usb autosuspend, and it has caused some system
stability issues.
Bug 69661 - mwifiex_usb on MS Surface Pro 1 is unstable
Bug 60815 - Interface hangs in mwifiex_usb
Bug 64111 - mwifiex_usb USB8797 crash failed to get signal
information
USB autosuspend get triggered when Surface Pro's AC power is
removed or powertop enables power saving on USB8797 device.
Driver's suspend handler is called here, but resume handler
won't be called until the AC power is put back on or powertop
disables power saving for USB8797.
We need to refactor the suspend/resume handlers to support
usb autosuspend properly. For now let's just remove it.
Cc: <stable@vger.kernel.org> # 3.5+
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
John W. Linville says:
====================
Regarding the mac80211 bits, Johannes says:
"This time, I have a fix from Arik for scheduled scan recovery (something
that only recently went into the tree), a memory leak fix from Eytan and
a small regulatory bugfix from Inbal. The EAPOL change from Felix makes
rekeying more stable while lots of traffic is flowing, and there's
Emmanuel's and my fixes for a race in the code handling powersaving
clients."
Regarding the NFC bits, Samuel says:
"We only have one candidate for 3.14 fixes, and this is a NCI NULL
pointer dereference introduced during the 3.14 merge window."
Regarding the iwlwifi bits, Emmanuel says:
"This should fix an issue raised in iwldvm when we have lots of
association failures. There is a bugzilla for this bug - it hasn't
been validated by the user, but I hope it will do the trick."
Beyond that...
Amitkumar Karwar brings two mwifiex fixes, one to avoid a NULL pointer
dereference and another to address an improperly timed interrupt.
Arend van Spriel gives us a brcmfmac fix to avoid a crash during
scatter-gather packet transfers.
Avinash Patila offers an mwifiex to avoid an invalid memory access
when a device is removed.
Bing Zhao delivers a simple fix to avoid a naming conflict between
libertas and mwifiex.
Felix Fietkau provides a trio of ath9k fixes that properly account
for sequence numbering in ps-poll frames, reduce the rate for false
positives during baseband hang detection, and fix a regression related
to rx descriptor handling.
James Cameron shows us a libertas fix to ignore zero-length IEs when
processing scan results.
Kirill Tkhai brings a hostap fix to avoid prematurely freeing a timer.
Stanislaw Gruszka fixes an ath9k locking problem.
Sujith Manoharan addresses ETSI compliance for a device handled by
ath9k by adjusting the minimum CCA power threshold values.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit c14db2025 "bnx2x: Correct default Tx switching behaviour" supposedly
changed the default Tx switching behaviour, but was missing the fastpath change
required for FW to pass packets from PFs to VFs.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Only the first packet is currently handled correctly, but then
all others are assumed to have failed which is problematic. Fix
this, marking them all successful instead (since if they're not
then the firmware will have transmitted them as single frames.)
This fixes the lost packet reporting.
Also do a tiny variable scoping cleanup.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[Add the dvm part]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Some APs reject STA association request if a listen interval value exceeds
a threshold of 10. Thus, for example, Cisco APs may deny STA associations
returning status code 12 (Association denied due to reason outside the scope
of 802.11 standard) in the association response frame.
Fixing the issue by setting the default IWL_CONN_MAX_LISTEN_INTERVAL value
from 70 to 10.
Cc: <stable@vger.kernel.org> [3.10+]
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Enslaving a bond to itself leads to an endless loop and hangs the kernel.
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Tested-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There's a bug in the slave release function which leads the transmit
functions which use the bond->slave_cnt to a div by 0 because we might
just have released our last slave and made slave_cnt == 0 but at the same
time we may have a transmitter after the check for an empty list which will
fetch it and use it in the slave id calculation.
Fix it by moving the slave_cnt after synchronize_rcu so if this was our
last slave any new transmitters will see an empty slave list which is
checked after rcu lock but before calling the mode transmit functions
which rely on bond->slave_cnt.
Fixes: 278b208375 ("bonding: initial RCU conversion")
CC: Veaceslav Falico <vfalico@redhat.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Veaceslav has reported and fix this problem by commit f2ebd477f141bc0
(bonding: restructure locking of bond_ab_arp_probe()). According Jay's
opinion, the current solution is not very well, because the notification
is to indicate that the interface has actually changed state in a meaningful
way, but these calls in the ab ARP monitor are internal settings of the flags
to allow the ARP monitor to search for a slave to become active when there are
no active slaves. The flag setting to active or backup is to permit the ARP
monitor's response logic to do the right thing when deciding if the test
slave (current_arp_slave) is up or not.
So the best way to fix the problem is that we should not send a notification
when the slave is in testing state, and check the state at the end of the
monitor, if the slave's state recover, avoid to send pointless notification
twice. And RTNL is really a big lock, hold it regardless the slave's state
changed or not when the current_active_slave is null will loss performance
(every 100ms), so we should hold it only when the slave's state changed and
need to notify.
I revert the old commit and add new modifications.
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The problem was introduced by the commit 1d3ee88ae0d
(bonding: add netlink attributes to slave link dev).
The bond_set_active_slave() and bond_set_backup_slave()
will use rtmsg_ifinfo to send slave's states, so these
two functions should be called in RTNL.
In 802.3ad mode, acquiring RTNL for the __enable_port and
__disable_port cases is difficult, as those calls generally
already hold the state machine lock, and cannot unconditionally
call rtnl_lock because either they already hold RTNL (for calls
via bond_3ad_unbind_slave) or due to the potential for deadlock
with bond_3ad_adapter_speed_changed, bond_3ad_adapter_duplex_changed,
bond_3ad_link_change, or bond_3ad_update_lacp_rate. All four of
those are called with RTNL held, and acquire the state machine lock
second. The calling contexts for __enable_port and __disable_port
already hold the state machine lock, and may or may not need RTNL.
According to the Jay's opinion, I don't think it is a problem that
the slave don't send notify message synchronously when the status
changed, normally the state machine is running every 100 ms, send
the notify message at the end of the state machine if the slave's
state changed should be better.
I fix the problem through these steps:
1). add a new function bond_set_slave_state() which could change
the slave's state and call rtmsg_ifinfo() according to the input
parameters called notify.
2). Add a new slave parameter which called should_notify, if the slave's state
changed and don't notify yet, the parameter will be set to 1, and then if
the slave's state changed again, the param will be set to 0, it indicate that
the slave's state has been restored, no need to notify any one.
3). the __enable_port and __disable_port should not call rtmsg_ifinfo
in the state machine lock, any change in the state of slave could
set a flag in the slave, it will indicated that an rtmsg_ifinfo
should be called at the end of the state machine.
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If we receive a PTP event from the NIC when we haven't set up PTP state
in the driver, we attempt to read through a NULL pointer efx->ptp_data,
triggering a panic.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Masking the link partner's capabilities with local capabilities can be
misleading in autonegotiation scenarios such as PAUSE frame
autonegotiation.
This patch calculates the join between the local capabilities and the
link parner capabilities, when it determines the speed and duplex
settings, but does not mask any of the link partner capabilities when
it calculates PAUSE frame settings.
Signed-off-by: Cristian Bercaru <cristian.bercaru@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Without a shutdown handler, T4 cards behave very badly after a kexec.
Some firmware calls return errors indicating allocation failures, for
example. This is probably because thouse resources were not released by
a BYE message to the firmware, for example.
Using the remove handler guarantees we will use a well tested path.
With this patch I applied, I managed to use kexec multiple times and
probe and iSCSI login worked every time.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Driver was not re-setting sds ring count to 1 after failing
to allocate msi-x interrupts.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o This patch reverts commit 1414abea048e0835c43600d62808ed8163897227
(qlcnic: Restrict VF from configuring any VLAN mode.)
This will allow same multicast address to be used with any VLAN
instead of programming seperate (MAC, VLAN) tuples in adapter.
This will help save some multicast filters.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Once interrupts are enabled, instead of using module parameters,
use flags (QLCNIC_MSI_ENABLED and QLCNIC_MSIX_ENABLED) set by driver
to check interrupt mode.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Driver was treating -ve return value as success in case of
qlcnic_enable_msi_legacy() failure
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Only set sc->rx.discard_next to rx_stats->rs_more when actually
discarding the current descriptor.
Also, fix a detection of broken descriptors:
First the code checks if the current descriptor is not done.
Then it checks if the next descriptor is done.
Add a check that afterwards checks the first descriptor again, because
it might have been completed in the mean time.
This fixes a regression introduced in
commit 723e711356b5a8a95728a890e254e8b0d47b55cf
"ath9k: fix handling of broken descriptors"
Cc: stable@vger.kernel.org
Reported-by: Marco André Dinis <marcoandredinis@gmail.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Check if the baseband state remains stable, and add a small delay
between register reads.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Boris reports he's seeing:
> [ 9.195943] INFO: trying to register non-static key.
> [ 9.196031] the code is fine but needs lockdep annotation.
> [ 9.196031] turning off the locking correctness validator.
> [ 9.196031] CPU: 1 PID: 933 Comm: modprobe Not tainted 3.14.0-rc4+ #1
with the r8169 driver.
These are occuring because the seqcount embedded in u64_stats_sync on
32-bit SMP is uninitialized which is making lockdep unhappy.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alloc_dma_desc_resources() returns an error value and the next line
actually checks for it, so assign the return value properly.
Found by the coverity scanner.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We should alloc big buffers also when guest can receive UFO
packets to let the big packets fit into guest rx buffer.
Fixes 5c5167515d80f78f6bb538492c423adcae31ad65
(virtio-net: Allow UFO feature to be set and advertised.)
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
When passing tx frames to the U-APSD queue for powersave poll responses,
the ath_atx_tid pointer needs to be passed to ath_tx_setup_buffer for
proper sequence number accounting.
This fixes high latency and connection stability issues with ath9k
running as AP and a few kinds of mobile phones as client, when PS-Poll
is heavily used
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Both libertas USB driver and mwifiex_usb driver are registerring
with name 'usb8xxx'. The following conflict happens while trying
to load both drivers.
[6.211307] Error: Driver 'usb8xxx' is already registered...
[6.217261] mwifiex_usb: Driver register failed!
Fix it by renaming mwifiex_usb driver's name.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The minimum CCA power threshold values have to be adjusted
for existing cards to be in compliance with new regulations.
Newer cards will make use of the values obtained from EEPROM,
support for this was added earlier. To make sure that cards
that are already in use and don't have proper values in EEPROM,
do not violate regulations, use the initvals instead.
Cc: stable@vger.kernel.org
Reported-by: Jeang Daniel <dyjeong@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The driver concatenates multiple packets in one MMC transfer. For
scatter-gather to work the total length need to be multiple of 512
bytes. A pre-allocated buffer was used to add padding to accomplish
that. However, the length was not properly set and it was freed after
the first transfer causing a crash.
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We are sending sleep confirm done interrupt in the middle of
sleep handshake. There is a corner case when Tx done interrupt
is received from firmware during sleep handshake due to which
host and firmware power states go out of sync causing cmd and
Tx data timeout problem.
Hence sleep confirm done interrupt is sent at the end of sleep
handshake to fix the problem.
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We may get a NULL pointer here if skb allocation for Rx packet
was failed earlier.
Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Write io memory to clean PCIe buffer only when PCIe device is
present else this results into crash because of invalid memory
access.
Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Scan results from Marvell 8388 and 8686 have probe responses from
hidden APs and OLPC XO-1 mesh with a zero length SSID IE.
Bug in lbs_ret_scan discarded any remaining BSS in scan response,
leading to user not seeing APs in dense environments.
With LBS_DEB_SCAN, dmesg shows
libertas scan: scan response: 5 BSSs (419 bytes); resp size 474 bytes
libertas scan: scan: 00:1a:2b:84:de:e8, capa 0401, chan 1, qz, -51 dBm
libertas scan: scan: 5c:63:bf:d8:eb:0c, capa 0411, chan 1, qw129, -23 dBm
libertas scan: scan response: invalid IE fmt
With LBS_DEB_HEX, dmesg shows valid BSS in scan response were not
processed.
Change is to ignore zero length IE and continue processing.
Fixes OLPC 12757, http://dev.laptop.org/ticket/12757
Signed-off-by: James Cameron <quozl@laptop.org>
Reported-by: T Gillett <tgillett@gmail.com>
Tested-by: T Gillett <tgillett@gmail.com>
CC: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Function del_timer() does not guarantee that timer was really deleted.
If the timer handler is beeing executed at the moment, the function
does nothing. So, it's possible to use already freed memory in the handler:
[ref: Documentation/DocBook/kernel-locking.tmpl]
This was found using grep and compile-tested only. Please, consider
applying or something similar to it.
Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
CC: Jouni Malinen <j@w1.fi>
CC: John W. Linville <linville@tuxdriver.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The current flow: Set TX BD ready, and then set "INT" and "PINS" bit to
enable tx interrupt generation and crc checksum.
There has potential issue like as:
CPU fec uDMA
Set tx ready bit
uDMA start the BD transmission
Set "INT" bit
Set "PINS" bit
...
Above situation cause fec tx interrupt lost and fec MAC don't do
CRC checksum. The patch fix the potential issue.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Acked-by: Frank Li <Frank.li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We set IWL_STA_UCODE_INPROGRESS flag when we add a station
and clear it when we send the LQ command for it. But the LQ
command is sent only when the association succeeds.
If the association doesn't succeed, we would leave this flag
set and that wouldn't indicate the station entry as vacant.
This probably fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1065663
Cc: <stable@vger.kernel.org>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Even though only the outer vlan tag can be HW accelerated in the transmission
path, in the TUN/TAP driver vlan_features mirrors hw_features, which happens
to have the NETIF_F_HW_VLAN_?TAG_TX flags set. Because of this, during packet
tranmisssion through a stacked vlan device dev_hard_start_xmit, (incorrectly)
assuming that the vlan device supports hardware vlan acceleration, does not
add the vlan header to the skb payload and the inner vlan tags are lost
(vlan_tci contains the outer vlan tag when userspace reads the packet from
the tap device).
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
