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2013-10-08tun: don't look at current when non-blockingMichael S. Tsirkin
We play with a wait queue even if socket is non blocking. This is an obvious waste. Besides, it will prevent calling the non blocking variant when current is not valid. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08Merge branch 'mrf24j40'David S. Miller
Alan Ott says: ==================== Fix race conditions in mrf24j40 interrupts After testing with the betas of this patchset, it's been rebased and is ready for inclusion. David Hauweele noticed that the mrf24j40 would hang arbitrarily after some period of heavy traffic. Two race conditions were discovered, and the driver was changed to use threaded interrupts, since the enable/disable of interrupts in the driver has recently been a lighning rod whenever issues arise related to interrupts (costing engineering time), and since threaded interrupts are the right way to do it. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08mrf24j40: Use level-triggered interruptsAlan Ott
The mrf24j40 generates level interrupts. There are rare cases where it appears that the interrupt line never gets de-asserted between interrupts, causing interrupts to be lost, and causing a hung device from the driver's perspective. Switching the driver to interpret these interrupts as level-triggered fixes this issue. Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08mrf24j40: Use threaded IRQ handlerAlan Ott
Eliminate all the workqueue and interrupt enable/disable. Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08mrf24j40: Move INIT_COMPLETION() to before packet transmissionAlan Ott
This avoids a race condition where complete(tx_complete) could be called before tx_complete is initialized. Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08Merge branch '6lowpan'David S. Miller
Alan Ott says: ==================== Alexander Aring suggested that devices desired to be linked to 6lowpan be checked for actually being of type IEEE802154, since IEEE802154 devices are all that are supported by 6lowpan at present. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-086lowpan: Sync default hardware address of lowpan links to their wpanAlan Ott
When a lowpan link to a wpan device is created, set the hardware address of the lowpan link to that of the wpan device. Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-086lowpan: Only make 6lowpan links to IEEE802154 devicesAlan Ott
Refuse to create 6lowpan links if the actual hardware interface is of any type other than ARPHRD_IEEE802154. Signed-off-by: Alan Ott <alan@signal11.us> Suggested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-08ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_configPali Rohár
File drivers/leds/leds-lp55xx-common.c refuse to change led_current sysfs attribute if value is higher than max_current specified in board file. By default global C variables are zero, so changing always failed. This patch adding missing max_current and setting it to max safe value 100 (10 mA). It is unclear which commit exactly caused this regression as the lp5523 driver was broken and was hiding the platform data breakage. Now the driver is fixed so this should be fixed as well. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Joerg Reisenweber <joerg@openmoko.org> [tony@atomide.com: updated comments to describe regression] Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-10-08ALSA: hda - Add fixup for ASUS N56VZTakashi Iwai
ASUS N56VZ needs a fixup for the bass speaker pin, which was already provided via model=asus-mode4. Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=841645 Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-08ARM: mach-omap2: board-generic: fix undefined symbolSimon Barth
Since dra7 reuses the function 'omap5_realtime_timer_init' in arch/arm/mach-omap2/board-generic.c as timer init function, it has to be built for this SoC as well. Signed-off-by: Simon Barth <Simon.Pe.Barth@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-10-08ARM: dts: Fix pinctrl mask for omap3Tony Lindgren
The wake-up interrupt bit is available on omap3/4/5 processors unlike what we claim. Without fixing it we cannot use it on omap3 and the system configured for wake-up events will just hang on wake-up. Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Benoît Cousson <bcousson@baylibre.com> Cc: devicetree@vger.kernel.org Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-10-08ARM: OMAP3: Fix hardware detection for omap3630 when booted with device treeNishanth Menon
SoC family definitions at the moment are reactive to board needs as a result, beagle-xm would matchup with ti,omap3 which invokes omap3430_init_early instead of omap3630_init_early. Obviously, this is the wrong behavior. With clock node dts conversion, we get the following warnings before system hangs as a result and 3630 based platforms fails to boot (uart4 clocks are only present in OMAP3630 and not present in OMAP3430): ... omap_hwmod: uart4: cannot clk_get main_clk uart4_fck omap_hwmod: uart4: cannot _init_clocks WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434 _init+0x6c/0x80() omap_hwmod: uart4: couldn't init clocks ... WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: timer12: enabled state can only be entered from initialized, idle, or disabled state ... WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224 _idle+0xd4/0xf8() omap_hwmod: timer12: idle state can only be entered from enabled state WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: uart4: enabled state can only be entered from initialized, idle, or disabled state So, add specific compatiblity for 3630 to allow match for Beagle-XM platform. Signed-off-by: Nishanth Menon <nm@ti.com> [tony@atomide.com: left out ti,omap343x, updated comments] Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-10-08Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Various fixlets: On the kernel side: - fix a race - fix a bug in the handling of the perf ring-buffer data page On the tooling side: - fix the handling of certain corrupted perf.data files - fix a bug in 'perf probe' - fix a bug in 'perf record + perf sched' - fix a bug in 'make install' - fix a bug in libaudit feature-detection on certain distros" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf session: Fix infinite loop on invalid perf.data file perf tools: Fix installation of libexec components perf probe: Fix to find line information for probe list perf tools: Fix libaudit test perf stat: Set child_pid after perf_evlist__prepare_workload() perf tools: Add default handler for mmap2 events perf/x86: Clean up cap_user_time* setting perf: Fix perf_pmu_migrate_context
2013-10-08xfrm: check for a vaild skb in xfrm_policy_queue_processSteffen Klassert
We might dreference a NULL pointer if the hold_queue is empty, so add a check to avoid this. Bug was introduced with git commit a0073fe18 ("xfrm: Add a state resolution packet queue") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-10-08xfrm: Add refcount handling to queued policiesSteffen Klassert
We need to ensure that policies can't go away as long as the hold timer is armed, so take a refcont when we arm the timer and drop one if we delete it. Bug was introduced with git commit a0073fe18 ("xfrm: Add a state resolution packet queue") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-10-08ALSA: hda - hdmi: Fix channel map switch not taking effectAnssi Hannula
Currently hdmi_setup_audio_infoframe() reprograms the HDA channel mapping only when the infoframe is not up-to-date or the non-PCM flag has changed. However, when just the channel map has been changed, the infoframe may still be up-to-date and non-PCM flag may not have changed, so the new channel map is not actually programmed into the HDA codec. Notably, this failing case is also always triggered when the device is already in a prepared state and a new channel map is configured while changing only the channel positions (for example, plain "speaker-test -c2 -m FR,FL"). Fix that by always programming the channel map in hdmi_setup_audio_infoframe(). Tested on Intel HDMI. Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-08drm/nouveau/mc: disable msi support by default, it's busted in tons of placesBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-10-08Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: * The libaudit test was failing in some systems due to a unescaped newline, fix it so that the 'trace' tool can be built in such systems. * Fix installation of libexec components. * Add default handler for mmap2 events so that tools that don't explicitely define an MMAP2 handler don't crash, fix from David Ahern. * Fix to find line information for probe list, from Masami Hiramatsu. * Set child_pid after perf_evlist__prepare_workload(), fix from Namhyung Kim. * Fix infinite loop on invalid perf.data file, from Namhyung Kim. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-07Revert "serial: i.MX: evaluate linux,stdout-path property"Greg Kroah-Hartman
This reverts commit f7d2c0bbdb7b784cc035cacb7d36b379ba1c3bef, as it causes build errors when the driver is built as a module. Reported-by: Guenter Roeck <linux@roeck-us.net> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-07powerpc/irq: Don't switch to irq stack from softirq stackBenjamin Herrenschmidt
irq_exit() is now called on the irq stack, which can trigger a switch to the softirq stack from the irq stack. If an interrupt happens at that point, we will not properly detect the re-entrancy and clobber the original return context on the irq stack. This fixes it. The side effect is to prevent all nesting from softirq stack to irq stack even in the "safe" case but it's simpler that way and matches what x86_64 does. Reported-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-10-07net: Update the sysctl permissions handler to test effective uid/gidEric W. Biederman
On Tue, 20 Aug 2013 11:40:04 -0500 Eric Sandeen <sandeen@redhat.com> wrote: > This was brought up in a Red Hat bug (which may be marked private, I'm sorry): > > Bug 987055 - open O_WRONLY succeeds on some root owned files in /proc for process running with unprivileged EUID > > "On RHEL7 some of the files in /proc can be opened for writing by an unprivileged EUID." > > The flaw existed upstream as well last I checked. > > This commit in kernel v3.8 caused the regression: > > commit cff109768b2d9c03095848f4cd4b0754117262aa > Author: Eric W. Biederman <ebiederm@xmission.com> > Date: Fri Nov 16 03:03:01 2012 +0000 > > net: Update the per network namespace sysctls to be available to the network namespace owner > > - Allow anyone with CAP_NET_ADMIN rights in the user namespace of the > the netowrk namespace to change sysctls. > - Allow anyone the uid of the user namespace root the same > permissions over the network namespace sysctls as the global root. > - Allow anyone with gid of the user namespace root group the same > permissions over the network namespace sysctl as the global root group. > > Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> > Signed-off-by: David S. Miller <davem@davemloft.net> > > because it changed /sys/net's special permission handler to test current_uid, not > current_euid; same for current_gid/current_egid. > > So in this case, root cannot drop privs via set[ug]id, and retains all privs > in this codepath. Modify the code to use current_euid(), and in_egroup_p, as in done in fs/proc/proc_sysctl.c:test_perm() Cc: stable@vger.kernel.org Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reported-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07can: dev: fix nlmsg size calculation in can_get_size()Marc Kleine-Budde
This patch fixes the calculation of the nlmsg size, by adding the missing nla_total_size(). Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07ipv4: fix ineffective source address selectionJiri Benc
When sending out multicast messages, the source address in inet->mc_addr is ignored and rewritten by an autoselected one. This is caused by a typo in commit 813b3b5db831 ("ipv4: Use caller's on-stack flowi as-is in output route lookups"). Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07net/ethernet: cpsw: DT read bool dual_emacMarkus Pargmann
Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Acked-by: Mugunthan V N <mugunthanvnm@ti.com> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07net: ethernet: cpsw: Search childs for slave nodesMarkus Pargmann
The current implementation searches the whole DT for nodes named "slave". This patch changes it to search only child nodes for slaves. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Acked-by: Mugunthan V N <mugunthanvnm@ti.com> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07libata: make ata_eh_qc_retry() bump scmd->allowed on bogus failuresGwendal Grignou
libata EH decrements scmd->retries when the command failed for reasons unrelated to the command itself so that, for example, commands aborted due to suspend / resume cycle don't get penalized; however, decrementing scmd->retries isn't enough for ATA passthrough commands. Without this fix, ATA passthrough commands are not resend to the drive, and no error is signalled to the caller because: - allowed retry count is 1 - ata_eh_qc_complete fill the sense data, so result is valid - sense data is filled with untouched ATA registers. Signed-off-by: Gwendal Grignou <gwendal@google.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
2013-10-07ahci_platform: use dev_info() instead of printk()Jingoo Han
Change "raw" printk() call to dev_info() to provide a better message to userspace so it can properly identify the device and not just have to guess. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-10-07ahci: use dev_info() instead of printk()Jingoo Han
Change "raw" printk() call to dev_info() to provide a better message to userspace so it can properly identify the device and not just have to guess. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-10-07pata_isapnp: Don't use invalid I/O portsOndrej Zary
The test for 2nd I/O port validity is broken (reversed): On devices with no control port, the driver attempts to use invalid port 0, resulting in logs full of bad_io_access errors. On devices with control port, the driver does not use it. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-10-07net: fix unsafe set_memory_rw from softirqAlexei Starovoitov
on x86 system with net.core.bpf_jit_enable = 1 sudo tcpdump -i eth1 'tcp port 22' causes the warning: [ 56.766097] Possible unsafe locking scenario: [ 56.766097] [ 56.780146] CPU0 [ 56.786807] ---- [ 56.793188] lock(&(&vb->lock)->rlock); [ 56.799593] <Interrupt> [ 56.805889] lock(&(&vb->lock)->rlock); [ 56.812266] [ 56.812266] *** DEADLOCK *** [ 56.812266] [ 56.830670] 1 lock held by ksoftirqd/1/13: [ 56.836838] #0: (rcu_read_lock){.+.+..}, at: [<ffffffff8118f44c>] vm_unmap_aliases+0x8c/0x380 [ 56.849757] [ 56.849757] stack backtrace: [ 56.862194] CPU: 1 PID: 13 Comm: ksoftirqd/1 Not tainted 3.12.0-rc3+ #45 [ 56.868721] Hardware name: System manufacturer System Product Name/P8Z77 WS, BIOS 3007 07/26/2012 [ 56.882004] ffffffff821944c0 ffff88080bbdb8c8 ffffffff8175a145 0000000000000007 [ 56.895630] ffff88080bbd5f40 ffff88080bbdb928 ffffffff81755b14 0000000000000001 [ 56.909313] ffff880800000001 ffff880800000000 ffffffff8101178f 0000000000000001 [ 56.923006] Call Trace: [ 56.929532] [<ffffffff8175a145>] dump_stack+0x55/0x76 [ 56.936067] [<ffffffff81755b14>] print_usage_bug+0x1f7/0x208 [ 56.942445] [<ffffffff8101178f>] ? save_stack_trace+0x2f/0x50 [ 56.948932] [<ffffffff810cc0a0>] ? check_usage_backwards+0x150/0x150 [ 56.955470] [<ffffffff810ccb52>] mark_lock+0x282/0x2c0 [ 56.961945] [<ffffffff810ccfed>] __lock_acquire+0x45d/0x1d50 [ 56.968474] [<ffffffff810cce6e>] ? __lock_acquire+0x2de/0x1d50 [ 56.975140] [<ffffffff81393bf5>] ? cpumask_next_and+0x55/0x90 [ 56.981942] [<ffffffff810cef72>] lock_acquire+0x92/0x1d0 [ 56.988745] [<ffffffff8118f52a>] ? vm_unmap_aliases+0x16a/0x380 [ 56.995619] [<ffffffff817628f1>] _raw_spin_lock+0x41/0x50 [ 57.002493] [<ffffffff8118f52a>] ? vm_unmap_aliases+0x16a/0x380 [ 57.009447] [<ffffffff8118f52a>] vm_unmap_aliases+0x16a/0x380 [ 57.016477] [<ffffffff8118f44c>] ? vm_unmap_aliases+0x8c/0x380 [ 57.023607] [<ffffffff810436b0>] change_page_attr_set_clr+0xc0/0x460 [ 57.030818] [<ffffffff810cfb8d>] ? trace_hardirqs_on+0xd/0x10 [ 57.037896] [<ffffffff811a8330>] ? kmem_cache_free+0xb0/0x2b0 [ 57.044789] [<ffffffff811b59c3>] ? free_object_rcu+0x93/0xa0 [ 57.051720] [<ffffffff81043d9f>] set_memory_rw+0x2f/0x40 [ 57.058727] [<ffffffff8104e17c>] bpf_jit_free+0x2c/0x40 [ 57.065577] [<ffffffff81642cba>] sk_filter_release_rcu+0x1a/0x30 [ 57.072338] [<ffffffff811108e2>] rcu_process_callbacks+0x202/0x7c0 [ 57.078962] [<ffffffff81057f17>] __do_softirq+0xf7/0x3f0 [ 57.085373] [<ffffffff81058245>] run_ksoftirqd+0x35/0x70 cannot reuse jited filter memory, since it's readonly, so use original bpf insns memory to hold work_struct defer kfree of sk_filter until jit completed freeing tested on x86_64 and i386 Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07sfc: Only bind to EF10 functions with the LinkCtrl and Trusted flagsBen Hutchings
Although we do not yet enable multiple PFs per port, it is possible that a board will be reconfigured to enable them while the driver has not yet been updated to fully support this. The most obvious problem is that multiple functions may try to set conflicting link settings. But we will also run into trouble if the firmware doesn't consider us fully trusted. So, abort probing unless both the LinkCtrl and Trusted flags are set for this function. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-10-07iwlwifi: pcie: fix merge damageJohannes Berg
The merge b35c8097 seems to have lost commit eabc4ac5d, put the code back. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-07ath9k: fix tx queue scheduling after channel changesFelix Fietkau
Otherwise, if queues are full during a scan, tx scheduling does not resume after switching back to the home channel. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-10-07Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
2013-10-07ipv6: Allow the MTU of ipip6 tunnel to be set below 1280Oussama Ghorbel
The (inner) MTU of a ipip6 (IPv4-in-IPv6) tunnel cannot be set below 1280, which is the minimum MTU in IPv6. However, there should be no IPv6 on the tunnel interface at all, so the IPv6 rules should not apply. More info at https://bugzilla.kernel.org/show_bug.cgi?id=15530 This patch allows to check the minimum MTU for ipv6 tunnel according to these rules: -In case the tunnel is configured with ipip6 mode the minimum MTU is 68. -In case the tunnel is configured with ip6ip6 or any mode the minimum MTU is 1280. Signed-off-by: Oussama Ghorbel <ou.ghorbel@gmail.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid Pull HID fixes from Jiri Kosina: - fix for hidraw reference counting regression, by Manoj Chourasia - fix for minor number allocation for uhid, by David Herrmann - other small unsorted fixes / device ID additions * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: wiimote: fix FF deadlock HID: add Holtek USB ID 04d9:a081 SHARKOON DarkGlider HID: hidraw: close underlying device at removal of last reader HID: roccat: Fix "cannot create duplicate filename" problems HID: uhid: allocate static minor
2013-10-07Merge branch 'stable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull Tile bugfixes from Chris Metcalf: "This fixes some serious issues with PREEMPT support, and a couple of smaller corner-case issues fixed in the last couple of weeks" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch: tile: re-use kbasename() helper tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT tile: ensure interrupts disabled for preempt_schedule_irq() tile: change lock initalization in hardwall tile: include: asm: use 'long long' instead of 'u64' for atomic64_t and its related functions
2013-10-07netif_set_xps_queue: make cpu mask constMichael S. Tsirkin
virtio wants to pass in cpumask_of(cpu), make parameter const to avoid build warnings. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-07HID: wiimote: fix FF deadlockDavid Herrmann
The input core has an internal spinlock that is acquired during event injection via input_event() and friends but also held during FF callbacks. That means, there is no way to share a lock between event-injection and FF handling. Unfortunately, this is what is required for wiimote state tracking and what we do with state.lock and input->lock. This deadlock can be triggered when using continuous data reporting and FF on a wiimote device at the same time. I takes me at least 30m of stress-testing to trigger it but users reported considerably shorter times (http://bpaste.net/show/132504/) when using some gaming-console emulators. The real problem is that we have two copies of internal state, one in the wiimote objects and the other in the input device. As the input-lock is not supposed to be accessed from outside of input-core, we have no other chance than offloading FF handling into a worker. This actually works pretty nice and also allows to implictly merge fast rumble changes into a single request. Due to the 3-layered workers (rumble+queue+l2cap) this might reduce FF responsiveness. Initial tests were fine so lets fix the race first and if it turns out to be too slow we can always handle FF out-of-band and skip the queue-worker. Cc: <stable@vger.kernel.org> # 3.11+ Reported-by: Thomas Schneider Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-10-07cifs: Allow LANMAN auth method for servers supporting unencapsulated ↵Sachin Prabhu
authentication methods This allows users to use LANMAN authentication on servers which support unencapsulated authentication. The patch fixes a regression where users using plaintext authentication were no longer able to do so because of changed bought in by patch 3f618223dc0bdcbc8d510350e78ee2195ff93768 https://bugzilla.redhat.com/show_bug.cgi?id=1011621 Reported-by: Panos Kavalagios <Panagiotis.Kavalagios@eurodyn.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-10-07cifs: Fix inability to write files >2GB to SMB2/3 sharesJan Klos
When connecting to SMB2/3 shares, maximum file size is set to non-LFS maximum in superblock. This is due to cap_large_files bit being different for SMB1 and SMB2/3 (where it is just an internal flag that is not negotiated and the SMB1 one corresponds to multichannel capability, so maybe LFS works correctly if server sends 0x08 flag) while capabilities are checked always for the SMB1 bit in cifs_read_super(). The patch fixes this by checking for the correct bit according to the protocol version. CC: Stable <stable@kernel.org> Signed-off-by: Jan Klos <honza.klos@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
2013-10-07Merge remote-tracking branch 'spi/fix/s3c64xx' into spi-linusMark Brown
2013-10-07Merge remote-tracking branch 'spi/fix/pxa' into spi-linusMark Brown
2013-10-07Merge remote-tracking branch 'spi/fix/mpc512x' into spi-linusMark Brown
2013-10-07Merge remote-tracking branch 'spi/fix/hspi' into spi-linusMark Brown
2013-10-07Merge remote-tracking branch 'spi/fix/dspi' into spi-linusMark Brown
2013-10-07Merge remote-tracking branch 'spi/fix/clps711x' into spi-linusMark Brown
2013-10-07MIPS: stack protector: Fix per-task canary switchJames Hogan
Commit 1400eb6 (MIPS: r4k,octeon,r2300: stack protector: change canary per task) was merged in v3.11 and introduced assembly in the MIPS resume functions to update the value of the current canary in __stack_chk_guard. However it used PTR_L resulting in a load of the canary value, instead of PTR_LA to construct its address. The value is intended to be random but is then treated as an address in the subsequent LONG_S (store). This was observed to cause a fault and panic: CPU 0 Unable to handle kernel paging request at virtual address 139fea20, epc == 8000cc0c, ra == 8034f2a4 Oops[#1]: ... $24 : 139fea20 1e1f7cb6 ... Call Trace: [<8000cc0c>] resume+0xac/0x118 [<8034f2a4>] __schedule+0x5f8/0x78c [<8034f4e0>] schedule_preempt_disabled+0x20/0x2c [<80348eec>] rest_init+0x74/0x84 [<804dc990>] start_kernel+0x43c/0x454 Code: 3c18804b 8f184030 8cb901f8 <af190000> 00c0e021 8cb002f0 8cb102f4 8cb202f8 8cb302fc This can also be forced by modifying arch/mips/include/asm/stackprotector.h so that the default __stack_chk_guard value is more likely to be a bad (or unaligned) pointer. Fix it to use PTR_LA instead, to load the address of the canary value, which the LONG_S can then use to write into it. Reported-by: bobjones (via #mipslinux on IRC) Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Gregory Fong <gregory.0xf0@gmail.com> Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/6026/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-10-07spi: atmel: Fix incorrect error pathSachin Kamat
'irq' was not released when clk_prepare_enable failed. Fix it. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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