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2014-12-03Bluetooth: Add SMP flag for SC and set it when necessary.Johan Hedberg
This patch adds a new SMP flag for tracking whether Secure Connections is in use and sets the flag when both remote and local side have elected to use Secure Connections. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-12-03Bluetooth: Make auth_req mask dependent on SC enabled or notJohan Hedberg
If we haven't enabled SC support on our side we should use the same mask for the authentication requirement as we were using before SC support was added, otherwise we should use the extended mask for SC. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-12-03Bluetooth: Add basic SMP defines for LE Secure ConnectionsJohan Hedberg
This patch adds basic SMP defines for commands, error codes and PDU definitions for the LE Secure Connections feature. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-12-03tracing: Allow NOT to filter AND and OR clausesSteven Rostedt (Red Hat)
Add support to allow not "!" for and (&&) and (||). That is: !(field1 == X && field2 == Y) Where the value of the full clause will be notted. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-03tracing: Add NOT to filtering logicSteven Rostedt (Red Hat)
Ted noticed that he could not filter on an event for a bit being cleared. That's because the filtering logic only tests event fields with a limited number of comparisons which, for bit logic, only include "&", which can test if a bit is set, but there's no good way to see if a bit is clear. This adds a way to do: !(field & 2048) Which returns true if the bit is not set, and false otherwise. Note, currently !(field1 == 10 && field2 == 15) is not supported. That is, the 'not' only works for direct comparisons, not for the AND and OR logic. Link: http://lkml.kernel.org/r/20141202021912.GA29096@thunk.org Link: http://lkml.kernel.org/r/20141202120430.71979060@gandalf.local.home Acked-by: Alexei Starovoitov <ast@plumgrid.com> Suggested-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-12-03ARM: at91: remove unused board.h fileArnd Bergmann
All functions declared in this file are gone. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [nicolas.ferre@atmel.com: re-order patches so modify board-dt-sam9] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-12-03ARM: at91: remove unneeded header filesNicolas Ferre
These files were left behind with no reason. Remove them. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-12-03ARM: at91/clocksource: remove !DT PIT initializationsArnd Bergmann
As AT91 !DT code is now removed, cleanup the PIT clocksource driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [nicolas.ferre@atmel.com: split patch] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Boris BREZILLON <boris.brezillon@free-electrons.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-12-03spi: fsl-espi: add (un)prepare_transfer_hardware calls to save power if SPI ↵Heiner Kallweit
is not in use Use (un)prepare_transfer_hardware calls to set fsl-espi to low-power idle if not in use. Reference manual states: "The eSPI is in a idle state and consumes minimal power. The eSPI BRG is not functioning and the input clock is disabled" Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-03spi: fsl-(e)spi: migrate to generic master queueingHeiner Kallweit
Migrates the fsl-(e)spi driver to use the generic master queuing. Avoids the "master is unqueued, this is deprecated" warning. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-03netfilter: ipset: Explicitly add padding elements to hash:net, net and ↵Jozsef Kadlecsik
hash:net, port, net The elements must be u32 sized for the used hash function. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03netfilter: ipset: Allocate the proper size of memory when /0 networks are ↵Jozsef Kadlecsik
supported Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03netfilter: ipset: Simplify cidr handling for hash:*net* typesJozsef Kadlecsik
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03netfilter: ipset: Indicate when /0 networks are supportedJozsef Kadlecsik
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03netfilter: ipset: Alignment problem between 64bit kernel 32bit userspaceJozsef Kadlecsik
Sven-Haegar Koch reported the issue: sims:~# iptables -A OUTPUT -m set --match-set testset src -j ACCEPT iptables: Invalid argument. Run `dmesg' for more information. In syslog: x_tables: ip_tables: set.3 match: invalid size 48 (kernel) != (user) 32 which was introduced by the counter extension in ipset. The patch fixes the alignment issue with introducing a new set match revision with the fixed underlying 'struct ip_set_counter_match' structure. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03netfilter: ipset: Support updating extensions when the set is fullJozsef Kadlecsik
When the set was full (hash type and maxelem reached), it was not possible to update the extension part of already existing elements. The patch removes this limitation. Fixes: https://bugzilla.netfilter.org/show_bug.cgi?id=880 Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-03pinctrl: at91: enhance (debugfs) at91_gpio_dbg_showMatthieu Crapet
When a pin is configured as GPIO, print also direction (input or output). Signed-off-by: Matthieu Crapet <mcrapet@gmail.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-12-03arm64: Implement support for read-mostly sectionsJungseok Lee
As putting data which is read mostly together, we can avoid unnecessary cache line bouncing. Other architectures, such as ARM and x86, adopted the same idea. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-12-03Bluetooth: Simplify Link Key Notification event handling logicJohan Hedberg
When we get a Link Key Notification HCI event we should already have a hci_conn object. This should have been created either in the Connection Request event handler, the hci_connect_acl() function or the hci_cs_create_conn() function (if the request was not sent by the kernel). Since the only case that we'd end up not having a hci_conn in the Link Key Notification event handler would be essentially broken hardware it's safe to simply bail out from the function if this happens. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-12-03ALSA: hda - Drop AZX_DCAPS_ALIGN_BUFSIZETakashi Iwai
We introduced AZX_DCAPS_ALIGN_BUFSIZE to explicity show that the controller needs the alignment, with a slight hope that the buffer size alignment will be disabled as default in future. But the reality tells that most chips need the buffer size alignment, and it'll be likely enabled in future, too. This patch drops AZX_DCAPS_ALIGN_BUFSIZE to give back one more precious DCAPS bit for future use. At the same time, rename AZX_DCAPS_BUFSIZE with AZX_DCAPS_NO_ALIGN_BUFSIZE for avoiding confusion. AZX_DCAPS_ALIGN_BUFSIZE are still kept (but commented out) in each DCAPS presets for a purpose as markers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-03ALSA: hda - Define the DCAPS preset for the old Intel chipsetsTakashi Iwai
Just for improving readability. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-03Merge tag 'v3.18-rc7' into for-nextTakashi Iwai
... for allowing more cleanups of hda_intel.c driver-caps where both upstream and for-next contain the changes.
2014-12-03ALSA: i2sbus: Deletion of unnecessary checks before the function call ↵Markus Elfring
"release_and_free_resource" The release_and_free_resource() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-02tun: Fix GSO meta-data handling in tun_get_userHerbert Xu
When we write the GSO meta-data in tun_get_user we end up advancing the IO vector twice, thus exhausting the user buffer before we can finish writing the packet. Fixes: f5ff53b4d97c ("{macvtap,tun}_get_user(): switch to iov_iter") Reported-by: Marcelo Ricardo Leitner <mleitner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02Merge branch 'rocker-next'David S. Miller
Jiri Pirko says: ==================== introduce rocker switch driver with hardware accelerated datapath api - phase 1: bridge fdb offload This patchset is just the first phase of switch and switch-ish device support api in kernel. Note that the api will extend. So what this patchset includes: - introduce switchdev api skeleton for implementing switch drivers - introduce rocker switch driver which implements switchdev api fdb and bridge set/get link ndos As to the discussion if there is need to have specific class of device representing the switch itself, so far we found no need to introduce that. But we are generally ok with the idea and when the time comes and it will be needed, it can be easily introduced without any disturbance. This patchset introduces switch id export through rtnetlink and sysfs, which is similar to what we have for port id in SR-IOV. I will send iproute2 patchset for showing the switch id for port netdevs once this is applied. This applies also for the PF_BRIDGE and fdb iproute2 patches. iproute2 patches are now available here: https://github.com/jpirko/iproute2-rocker For detailed description and version history, please see individual patches. In v4 I reordered the patches leaving rocker patches on the end of the patchset. In v5 I only fixed whitespace issues of patch #13 We have a TODO for related items we want to work on in near future: https://etherpad.wikimedia.org/p/netdev-swdev-todo ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: Use logical operators on booleansThomas Graf
Silences various sparse warnings Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: Add proper validation of Netlink attributesThomas Graf
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: add ndo_bridge_setlink/getlink support for learning policyScott Feldman
Rocker ports will use new "swdev" hwmode for bridge port offload policy. Current supported policy settings are BR_LEARNING and BR_LEARNING_SYNC. User can turn on/off device port FDB learning and syncing to bridge. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: implement ndo_fdb_dumpJiri Pirko
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: implement L2 bridge offloadingScott Feldman
Add L2 bridge offloading support to rocker driver. Here, the Linux bridge driver is used to collect swdev ports into a tagged (or untagged) VLAN bridge. The switchdev will offload from the bridge driver the following L2 bridging functions: - Learning of neighbor MAC addresses on VLAN X Learned mac/vlan is installed in bridge FDB. (And removed when device unlearns mac/vlan). Learning must be turned off on each bridge port to disable the feature in the bridge driver. - Flooding of multicast/broadcast and unknown unicast pkts to (STP) active ports in bridge. The bridge driver is unaware of the flooding happening at the device level. Flooding must be turned off on each bridge port to disable the feature on the bridge driver. - STP port state is pushed down to driver/device. The bridge still processes STP BDPUs and maintains port STP state (for all VLANs in bridge), but the driver/device must be notified of port STP state change to program the device. Multiple (VLAN) bridges are supported. The device (implemented per the OF-DPA spec) must use a portion of the VLAN namespace for internal VLANs. Right now, the upper 255 VLANs (0xf00 to 0xffe) are used as internal VLAN IDs for untagged traffic and are not available as port VLANs. The driver uses the following interfaces: 1. To track VLAN add/del on ports in bridge: .ndo_vlan_rx_add_vid .ndo_vlan_rx_kill_vid 2. To track port add/del membership in bridge: NETDEV_CHANGEUPPER netdevice notifier 3. To catch static FDB entries installed on bridge/vlan by user using netlink: .ndo_fdb_add .ndo_fdb_del 4. To be notified on port STP state change: .ndo_switch_port_stp_update 5. To notify bridge driver on learned/forgotten mac/vlans on bridge port: br_fdb_external_learn_add br_fdb_external_learn_del Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: implement rocker ofdpa flow table manipulationScott Feldman
The rocker driver maintains 4 hash tables: flows, groups, FDB, and VLANs. Flow and group tables track the entries installed to OF-DPA tables, per the OF-DPA spec. See OF-DPA spec for full description of fields in each flow and group table. New table entries are pushed to the device with ADD cmd. Updated entries are pushed to the device with MOD cmd. For flow table entries, a crc32 key is made from fields of the particular field. For group table entries, the group_id is used as the key. The FDB table tracks fdb entries learned by the device or manually pushed to the bridge by the user. A crc32 key is made from the port/mac/vlan tuple for the fdb entry. The VLAN table tracks the ifindex-to-internal-vlan mapping for untagged pkts. On ingress, an untagged pkt is inserted with an internal VLAN ID based on the input port's current internal VLAN ID. The input port's internal VLAN will either be referenced by the port's ifindex, if not bridged, or the containing bridge's ifindex, if bridged. Since the ifindex space isn't within a fixed range, uses a hash table (with ifindex as key) to track internal VLAN ID for a given ifindex. The internal VLAN ID range is fixed and currently uses the upper 255 VLAN IDs, starting at 0xf00. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rocker: introduce rocker switch driverJiri Pirko
This patch introduces the first driver to benefit from the switchdev infrastructure and to implement newly introduced switch ndos. This is a driver for emulated switch chip implemented in qemu: https://github.com/sfeldma/qemu-rocker/ This patch is a result of joint work with Scott Feldman. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Reviewed-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: add brport flags to dflt bridge_getlinkScott Feldman
To allow brport device to return current brport flags set on port. Add returned flags to nested IFLA_PROTINFO netlink msg built in dflt getlink. With this change, netlink msg returned for bridge_getlink contains the port's offloaded flag settings (the port's SELF settings). Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: add new hwmode swdevScott Feldman
Current hwmode settings are "vepa" or "veb". These are for NIC interfaces with basic bridging function offloaded to HW. Add new "swdev" for full switch device offloads. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: add new brport flag LEARNING_SYNCScott Feldman
This policy flag controls syncing of learned FDB entries to bridge's FDB. If on, FDB entries learned on bridge port device will be synced. If off, device may still learn new FDB entries but they will not be synced with bridge's FDB. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: move private brport flags to if_bridge.h so port drivers can use flagsScott Feldman
Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: add API to notify bridge driver of learned FBD on offloaded deviceScott Feldman
When the swdev device learns a new mac/vlan on a port, it sends some async notification to the driver and the driver installs an FDB in the device. To give a holistic system view, the learned mac/vlan should be reflected in the bridge's FBD table, so the user, using normal iproute2 cmds, can view what is currently learned by the device. This API on the bridge driver gives a way for the swdev driver to install an FBD entry in the bridge FBD table. (And remove one). This is equivalent to the device running these cmds: bridge fdb [add|del] <mac> dev <dev> vid <vlan id> master This patch needs some extra eyeballs for review, in paricular around the locking and contexts. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: call netdev_sw_port_stp_update when bridge port STP status changesScott Feldman
To notify switch driver of change in STP state of bridge port, add new .ndo op and provide switchdev wrapper func to call ndo op. Use it in bridge code then. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02net-sysfs: expose physical switch id for particular deviceJiri Pirko
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02rtnl: expose physical switch id for particular deviceJiri Pirko
The netdevice represents a port in a switch, it will expose IFLA_PHYS_SWITCH_ID value via rtnl. Two netdevices with the same value belong to one physical switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02net: introduce generic switch devices supportJiri Pirko
The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02net: rename netdev_phys_port_id to more generic nameJiri Pirko
So this can be reused for identification of other "items" as well. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02net: make vid as a parameter for ndo_fdb_add/ndo_fdb_delJiri Pirko
Do the work of parsing NDA_VLAN directly in rtnetlink code, pass simple u16 vid to drivers from there. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: convert flags in fbd entry into bitfieldsJiri Pirko
Suggested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02neigh: sort Neighbor Cache Entry FlagsJiri Pirko
Suggested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02bridge: rename fdb_*_hw to fdb_*_hw_addr to avoid confusionJiri Pirko
The current name might seem that this actually offloads the fdb entry to hw. So rename it to clearly present that this for hardware address addition/removal. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02cxgb4: Fill in supported link mode for SFP modulesHariprasad Shenai
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-02xen-netfront: Remove BUGs on paged skb data which crosses a page boundarySeth Forshee
These BUGs can be erroneously triggered by frags which refer to tail pages within a compound page. The data in these pages may overrun the hardware page while still being contained within the compound page, but since compound_order() evaluates to 0 for tail pages the assertion fails. The code already iterates through subsequent pages correctly in this scenario, so the BUGs are unnecessary and can be removed. Fixes: f36c374782e4 ("xen/netfront: handle compound page fragments on transmit") Cc: <stable@vger.kernel.org> # 3.7+ Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-03intel_pstate: skip this driver if Sun server has _PPC methodethan zhao
Oracle Sun X86 servers have dynamic power capping capability that works via ACPI _PPC method etc, so skip loading this driver if Sun server has ACPI _PPC enabled. Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com> Tested-by: Linda Knippers <linda.knippers@hp.com> Acked-by: Kristen Carlson Accardi <kristen@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-02mm/vmpressure.c: fix race in vmpressure_work_fn()Andrew Morton
In some android devices, there will be a "divide by zero" exception. vmpr->scanned could be zero before spin_lock(&vmpr->sr_lock). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=88051 [akpm@linux-foundation.org: neaten] Reported-by: ji_ang <ji_ang@163.com> Cc: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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