22 Jun, 2015
4 commits
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Instead of (partly) open coding watchdog_init_timeout to determine the
inital timeout use the core function that exists for exactly this
purpose.As a side effect the "timeout-sec" device-tree property is recognized now
(though currently unused in the omap device trees).Signed-off-by: Uwe Kleine-König
Reviewed-by: Guenter Roeck
Signed-off-by: Wim Van Sebroeck -
ti,hwmods doesn't belong into the compatible section but is a property
on it's own. Also reformat the section of required properties to match the
usual style of dt binding documents.Signed-off-by: Uwe Kleine-König
Reviewed-by: Felipe Balbi
Acked-by: Felipe Balbi
Reviewed-by: Guenter Roeck
Signed-off-by: Wim Van Sebroeck -
Add a device tree binding documentation to the watchdog hardware block on the
Conexant CX92755 SoC. The CX92755 is from the Digicolor SoCs series. Other SoCs
in that series may share the same hardware block.Signed-off-by: Baruch Siach
Reviewed-by: Guenter Roeck
Signed-off-by: Wim Van Sebroeck -
On current ST platforms the LPC controls a number of functions including
Watchdog and Real Time Clock. This patch provides the bindings used to
configure LPC in Watchdog mode.Signed-off-by: Lee Jones
Signed-off-by: Wim Van Sebroeck
20 Jun, 2015
1 commit
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Pull clk fixes from Michael Turquette:
"Very late clk regression fixes for the ARM-based AT91 platform.These went unnoticed by me until recently, hence the late pull
request"* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: at91: fix h32mx prototype inclusion in pmc header
clk: at91: trivial: typo in peripheral clock description
clk: at91: fix PERIPHERAL_MAX_SHIFT definition
clk: at91: pll: fix input range validity check
19 Jun, 2015
2 commits
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Signed-off-by: Nicolas Ferre
Signed-off-by: Boris Brezillon
17 Jun, 2015
1 commit
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I copied the wrong shell code into the documentation. Sorry to all who
tried to get sense out of this current example :/ Slight rewording while
we are here.Reported-by: Tim Bakker
Signed-off-by: Wolfram Sang
Signed-off-by: Wolfram Sang
Cc: stable@kernel.org
13 Jun, 2015
3 commits
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Pull networking fixes from David Miller:
1) Fix uninitialized struct station_info in cfg80211_wireless_stats(),
from Johannes Berg.2) Revert commit attempt to fix ipv6 protocol resubmission, it adds
regressions.3) Endless loops can be created in bridge port lists, fix from Nikolay
Aleksandrov.4) Don't WARN_ON() if sk->sk_forward_alloc is non-zero in
sk_clear_memalloc, it is a legal situation during swap deactivation.
Fix from Mel Gorman.5) Fix order of disabling interrupts and unlocking NAPI in enic driver
to avoid a race. From Govindarajulu Varadarajan.6) High and low register writes are swapped when programming the start
of periodic output in igb driver. From Richard Cochran.7) Fix device rename handling in mpls stack, from Robert Shearman.
8) Do not trigger compaction synchronously when optimistically trying
to allocate an order 3 page in alloc_skb_with_frags() and
skb_page_frag_refill(). From Shaohua Li.9) Authentication with COOKIE_ECHO is not handled properly in SCTP, fix
from Marcelo Ricardo Leitner.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
Doc: networking: Fix URL for wiki.wireshark.org in udplite.txt
sctp: allow authenticating DATA chunks that are bundled with COOKIE_ECHO
net: don't wait for order-3 page allocation
mpls: handle device renames for per-device sysctls
net: igb: fix the start time for periodic output signals
enic: fix memory leak in rq_clean
enic: check return value for stat dump
enic: unlock napi busy poll before unmasking intr
net, swap: Remove a warning and clarify why sk_mem_reclaim is required when deactivating swap
bridge: fix multicast router rlist endless loop
tipc: disconnect socket directly after probe failure
Revert "ipv6: Fix protocol resubmission"
cfg80211: wext: clear sinfo struct before calling driver -
This patch fix URL (http to https) for wiki.wireshark.org.
Signed-off-by: Masanari Iida
Signed-off-by: David S. Miller -
Pull VT-d hardware workarounds from David Woodhouse:
"This contains a workaround for hardware issues which I *thought* were
never going to be seen on production hardware. I'm glad I checked
that before the 4.1 release...Firstly, PASID support is so broken on existing chips that we're just
going to declare the old capability bit 28 as 'reserved' and change
the VT-d spec to move PASID support to another bit. So any existing
hardware doesn't support SVM; it only sets that (now) meaningless bit
28.That patch *wasn't* imperative for 4.1 because we don't have PASID
support yet. But *even* the extended context tables are broken — if
you just enable the wider tables and use none of the new bits in them,
which is precisely what 4.1 does, you find that translations don't
work. It's this problem which I thought was caught in time to be
fixed before production, but wasn't.To avoid triggering this issue, we now *only* enable the extended
context tables on hardware which also advertises "we have PASID
support and we actually tested it this time" with the new PASID
feature bit.In addition, I've added an 'intel_iommu=ecs_off' command line
parameter to allow us to disable it manually if we need to"* git://git.infradead.org/intel-iommu:
iommu/vt-d: Only enable extended context tables if PASID is supported
iommu/vt-d: Change PASID support to bit 40 of Extended Capability Register
12 Jun, 2015
1 commit
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Although the extended tables are theoretically a completely orthogonal
feature to PASID and anything else that *uses* the newly-available bits,
some of the early hardware has problems even when all we do is enable
them and use only the same bits that were in the old context tables.For now, there's no motivation to support extended tables unless we're
going to use PASID support to do SVM. So just don't use them unless
PASID support is advertised too. Also add a command-line bailout just in
case later chips also have issues.The equivalent problem for PASID support has already been fixed with the
upcoming VT-d spec update and commit bd00c606a ("iommu/vt-d: Change
PASID support to bit 40 of Extended Capability Register"), because the
problematic platforms use the old definition of the PASID-capable bit,
which is now marked as reserved and meaningless.So with this change, we'll magically start using ECS again only when we
see the new hardware advertising "hey, we have PASID support and we
actually tested it this time" on bit 40.The VT-d hardware architect has promised that we are not going to have
any reason to support ECS *without* PASID any time soon, and he'll make
sure he checks with us before changing that.In the future, if hypothetical new features also use new bits in the
context tables and can be seen on implementations *without* PASID support,
we might need to add their feature bits to the ecs_enabled() macro.Signed-off-by: David Woodhouse
09 Jun, 2015
2 commits
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Pull ARM SoC fixes from Kevin Hilman:
"About 10 days worth of small bug fixes, and the (hopefully) final
round fixes for from arm-soc land for the -rc cycle. Nothing special
to note, but here's a brief summary of fixes by SoC type:- OMAP:
small set of misc DT fixes; boot fix for THUMB2 kernel- mediatek:
PMIC fixes; DT fix for model name- exynos:
wakeup interupt fixes for 3250- mvebu:
revert mbus patch which broke DMA masters* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: am335x-boneblack: disable RTC-only sleep to avoid hardware damage
ARM: dts: AM35xx: fix system control module clocks
arm64: dts: mt8173-evb: fix model name
ARM: exynos: Fix wake-up interrupts for Exynos3250
ARM: dts: Fix n900 dts file to work around 4.1 touchscreen regression on n900
ARM: dts: Fix dm816x to use right compatible flag for MUSB
ARM: OMAP3: Fix booting with thumb2 kernel
Revert "bus: mvebu-mbus: make sure SDRAM CS for DMA don't overlap the MBus bridge window"
bus: mvebu-mbus: do not set WIN_CTRL_SYNCBARRIER on non io-coherent platforms.
ARM: mvebu: armada-xp-linksys-mamba: Disable internal RTC
soc: mediatek: Add compile dependency to pmic-wrapper
soc: mediatek: PMIC wrap: Fix register state machine handling
soc: mediatek: PMIC wrap: Fix clock rate handling -
…/git/tmlind/linux-omap into fixes
Merge omap fixes for v4.1, urgent fix to avoid potential hardware damage From Tony Lindgren:
Omap fixes for the -rc cycle, including a fix for potential hardware
breakage on BeagleBones:- BeagleBones don't support RTC-only mode, it can cause hardware
damage if system-power-controller is specified without
ti,pmic-shutdown-controller- Fix a recent regression to am3517 SoCs caused by the recent clock
move that was not noticed until now despite automated boot
testing- Fix a regression for n900 touchscreen triggered by recent
recent input changes- Fix compatible property for dm816x USB to avoid errors with
USB Ethernet- Fix oops for omap3 when built with CONFIG_THUMB2_KERNEL
* tag 'omap-for-v4.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: am335x-boneblack: disable RTC-only sleep to avoid hardware damage
ARM: dts: AM35xx: fix system control module clocks
ARM: dts: Fix n900 dts file to work around 4.1 touchscreen regression on n900
ARM: dts: Fix dm816x to use right compatible flag for MUSB
ARM: OMAP3: Fix booting with thumb2 kernel
07 Jun, 2015
1 commit
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Pull USB and PHY driver fixes from Greg KH:
"Here are some USB and PHY driver fixes that resolve some reported
regressions. Also in here are some new device ids.All of the details are in the shortlog and these patches have been in
linux-next with no problems"* tag 'usb-4.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle
usb: renesas_usbhs: Don't disable the pipe if Control write status stage
usb: renesas_usbhs: Fix fifo unclear in usbhsf_prepare_pop
usb: gadget: f_fs: fix check in read operation
usb: musb: fix order of conditions for assigning end point operations
usb: gadget: f_uac1: check return code from config_ep_by_speed
usb: gadget: ffs: fix: Always call ffs_closed() in ffs_data_clear()
usb: gadget: g_ffs: Fix counting of missing_functions
usb: s3c2410_udc: correct reversed pullup logic
usb: dwc3: gadget: Fix incorrect DEPCMD and DGCMD status macros
usb: phy: tahvo: Pass the IRQF_ONESHOT flag
usb: phy: ab8500-usb: Pass the IRQF_ONESHOT flag
usb: renesas_usbhs: Revise the binding document about the dma-names
usb: host: xhci: add mutex for non-thread-safe data
usb: make module xhci_hcd removable
USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board
usb: gadget: f_midi: fix segfault when reading empty id
phy: phy-rcar-gen2: Fix USBHS_UGSTS_LOCK value
phy: omap-usb2: invoke pm_runtime_disable on error path
phy: fix Kconfig dependencies
...
01 Jun, 2015
2 commits
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Pull SCSI target fixes from Nicholas Bellinger:
"These are mostly minor fixes, with the exception of the following that
address fall-out from recent v4.1-rc1 changes:- regression fix related to the big fabric API registration changes
and configfs_depend_item() usage, that required cherry-picking one
of HCH's patches from for-next to address the issue for v4.1 code.- remaining TCM-USER -v2 related changes to enforce full CDB
passthrough from Andy + Ilias.Also included is a target_core_pscsi driver fix from Andy that
addresses a long standing issue with a Scsi_Host reference being
leaked on PSCSI device shutdown"* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
iser-target: Fix error path in isert_create_pi_ctx()
target: Use a PASSTHROUGH flag instead of transport_types
target: Move passthrough CDB parsing into a common function
target/user: Only support full command pass-through
target/user: Update example code for new ABI requirements
target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST
target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem
target: Drop signal_pending checks after interruptible lock acquire
target: Add missing parentheses
target: Fix bidi command handling
target/user: Disallow full passthrough (pass_level=0)
ISCSI: fix minor memory leak -
…l/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Some late hwmon patches, all headed for -stable- fix sysfs attribute initialization in nct6775 and nct6683 drivers
- do not attempt to auto-detect tmp435 on I2C address 0x37
- ensure iio channel is of type IIO_VOLTAGE in ntc_thermistor driver"
* tag 'hwmon-for-linus-v4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (nct6683) Add missing sysfs attribute initialization
hwmon: (nct6775) Add missing sysfs attribute initialization
hwmon: (tmp401) Do not auto-detect chip on I2C address 0x37
hwmon: (ntc_thermistor) Ensure iio channel is of type IIO_VOLTAGE
31 May, 2015
2 commits
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After much discussion, give up on only passing a subset of SCSI commands
to userspace and pass them all. Based on what pscsi is doing, make sure
to set SCF_SCSI_DATA_CDB for I/O ops, and define attributes identical to
pscsi.Make hw_block_size configurable via dev param.
Remove mention of command filtering from tcmu-design.txt.
Signed-off-by: Andy Grover
Reviewed-by: Ilias Tsitsimpis
Signed-off-by: Nicholas Bellinger -
We now require that the userspace handler set a bit if the command is not
handled.Update calls to tcmu_hdr_get_op for v2.
Signed-off-by: Andy Grover
Reviewed-by: Ilias Tsitsimpis
Signed-off-by: Nicholas Bellinger
30 May, 2015
2 commits
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I2C address 0x37 may be used by EEPROMs, which can result in false
positives. Do not attempt to detect a chip at this address.Reviewed-by: Jean Delvare
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Guenter Roeck -
Fix dts to match what the Linux kernel expects. This works around
touchscreen problems in 4.1 linux on Nokia n900.Signed-off-by: Pavel Machek
Reviewed-by: Felipe Balbi
Signed-off-by: Tony Lindgren
28 May, 2015
1 commit
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Pull x86 fixes from Ingo Molnar:
"This tree includes:- a fix that disables the compacted FPU XSAVE format by disabling
XSAVES support: the fixes are too complex and the breakages
ABI-affecting, so we want this to be quirked off in a robust way
and backported, to make sure no broken kernel is exposed to the new
hardware (which exposure is still very limited).- an MCE printk message fix
- a documentation fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Disable XSAVES* support for now
x86/Documentation: Update the contact email for L3 cache index disable functionality
x86/mce: Fix MCE severity messages
27 May, 2015
1 commit
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…balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.1-rc5
A few late important fixes which have been pending
on mailing list due to my vacations.The important fixes are a fix for DEPCMD and DGCMD
status bitfields on DWC3, a couple fixes for Renesas
USB Controller, one of which prevents a broken DT
binding from reaching v4.1-final, and an old fix for
s3c2410-udc where pullup logic was reversed.Signed-off-by: Felipe Balbi <balbi@ti.com>
26 May, 2015
1 commit
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Since the DT should describe the hardware (not the driver limitation),
This patch revises the binding document about the dma-names to change
simple numbering as "ch%d" instead of "tx" and "rx".Also this patch fixes the actual code of renesas_usbhs driver to handle
the new dma-names.Signed-off-by: Yoshihiro Shimoda
Acked-by: Mark Rutland
Acked-by: Geert Uytterhoeven
Signed-off-by: Felipe Balbi
23 May, 2015
2 commits
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Pull networking fixes from David Miller:
1) Don't leak ipvs->sysctl_tbl, from Tommi Rentala.
2) Fix neighbour table entry leak in rocker driver, from Ying Xue.
3) Do not emit bonding notifications for unregistered interfaces, from
Nicolas Dichtel.4) Set ipv6 flow label properly when in TIME_WAIT state, from Florent
Fourcot.5) Fix regression in ipv6 multicast filter test, from Henning Rogge.
6) do_replace() in various footables netfilter modules is missing a
check for 0 counters in the datastructure provided by the user. Fix
from Dave Jones, and found with trinity.7) Fix RCU bug in packet scheduler classifier module unloads, from
Daniel Borkmann.8) Avoid deadlock in tcp_get_info() by using u64_sync. From Eric
Dumzaet.9) Input packet processing can race with inetdev_destroy() teardown,
fix potential OOPS in ip_error() by explicitly testing whether the
inetdev is still attached. From Eric W Biederman.10) MLDv2 parser in bridge multicast code breaks too early while
parsing. Fix from Thadeu Lima de Souza Cascardo.11) Asking for settings on non-zero PHYID doesn't work because we do not
import the command structure from the user and use the PHYID
provided there. Fix from Arun Parameswaran.12) Fix UDP checksums with IPV6 RAW sockets, from Vlad Yasevich.
13) Missing NF_TABLES depends for TPROXY etc can cause build failures,
fix from Florian Westphal.14) Fix netfilter conntrack to handle RFC5961 challenge ACKs properly,
from Jesper Dangaard Brouer.15) If netlink autobind retry fails, we have to reset the sockets portid
back to zero. From Herbert Xu.16) VXLAN netns exit code unregisters using wrong device, from John W
Linville.17) Add some USB device IDs to ath3k and btusb bluetooth drivers, from
Dmitry Tunin and Wen-chien Jesse Sung.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
bridge: fix lockdep splat
net: core: 'ethtool' issue with querying phy settings
bridge: fix parsing of MLDv2 reports
ARM: zynq: DT: Use the zynq binding with macb
net: macb: Disable half duplex gigabit on Zynq
net: macb: Document zynq gem dt binding
ipv4: fill in table id when replacing a route
cdc_ncm: Fix tx_bytes statistics
ipv4: Avoid crashing in ip_error
tcp: fix a potential deadlock in tcp_get_info()
net: sched: fix call_rcu() race on classifier module unloads
net: phy: Make sure phy_start() always re-enables the phy interrupts
ipv6: fix ECMP route replacement
ipv6: do not delete previously existing ECMP routes if add fails
Revert "netfilter: bridge: query conntrack about skb dnat"
netfilter: ensure number of counters is >0 in do_replace()
netfilter: nfnetlink_{log,queue}: Register pernet in first place
tcp: don't over-send F-RTO probes
tcp: only undo on partial ACKs in CA_Loss
net/ipv6/udp: Fix ipv6 multicast socket filter regression
... -
Signed-off-by: Nathan Sullivan
Acked-by: Nicolas Ferre
Signed-off-by: David S. Miller
22 May, 2015
2 commits
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Pull KVM fixes from Paolo Bonzini:
"This includes a fix for two oopses, one on PPC and on x86.The rest is fixes for bugs with newer Intel processors"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm/fpu: Enable eager restore kvm FPU for MPX
Revert "KVM: x86: drop fpu_activate hook"
kvm: fix crash in kvm_vcpu_reload_apic_access_page
KVM: MMU: fix SMAP virtualization
KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
KVM: MMU: fix smap permission check
KVM: PPC: Book3S HV: Fix list traversal in error case -
Pull clk fixes from Michael Turquette:
"The first set of clk fixes for 4.1 are all driver bugs, with the
exception of a single locking fix in the core code.All driver fixes are for code that was merged recently. The Samsung
stuff is mostly fixes around suspend/resume, the Qualcomm fixes are
for invalid hardware configuration data and the Silicon Labs patches
are fixes following their move away from platform_data to Device Tree"* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: si5351: Do not pass struct clk in platform_data
clk: si5351: Mention clock-names in the binding documentation
clk: add missing lock when call clk_core_enable in clk_set_parent
clk: exynos5420: Restore GATE_BUS_TOP on suspend
clk: qcom: Fix MSM8916 gfx3d_clk_src configuration
clk: qcom: Fix MSM8916 venus divider value
clk: exynos5433: Fix wrong PMS value of exynos5433_pll_rates
clk: exynos5433: Fix wrong parent clock of sclk_apollo clock
clk: exynos5433: Fix CLK_PCLK_MONOTONIC_CNT clk register assignment
clk: exynos5433: Fix wrong offset of PCLK_MSCL_SECURE_SMMU_JPEG
clk: Use CONFIG_ARCH_EXYNOS instead of CONFIG_ARCH_EXYNOS5433
19 May, 2015
1 commit
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Pull MTD fixes from Brian Norris:
"Two MTD fixes for 4.1:- readtest: the signal-handling code was clobbering the error codes
we should be handling/reporting in this test, rendering it useless.
Noticed by Coverity.- the common SPI NOR flash DT binding (merged for 4.1-rc1) is being
revised, so let's change that before 4.1 is minted"* tag 'for-linus-20150516' of git://git.infradead.org/linux-mtd:
Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor"
mtd: readtest: don't clobber error reports
18 May, 2015
1 commit
-
The mailing list discuss@x86-64.org is now defunct.
Use the lkml in its place.Signed-off-by: Aravind Gopalakrishnan
Signed-off-by: Borislav Petkov
Cc: Greg KH
Cc: H. Peter Anvin
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: linux-api@vger.kernel.org
Cc: sboyd@codeaurora.org
Cc: sudeep.holla@arm.com
Link: http://lkml.kernel.org/r/1431125098-9470-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1431936437-25286-2-git-send-email-bp@alien8.de
[ Changed the contact email to lkml. ]
Signed-off-by: Ingo Molnar
17 May, 2015
1 commit
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Pull tty/serial fixes from Greg KH:
"Here's some TTY and serial driver fixes for reported issues.All of these have been in linux-next successfully"
* tag 'tty-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
pty: Fix input race when closing
tty/n_gsm.c: fix a memory leak when gsmtty is removed
Revert "serial/amba-pl011: Leave the TX IRQ alone when the UART is not open"
serial: omap: Fix error handling in probe
earlycon: Revert log warnings
16 May, 2015
1 commit
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In commit 8ff16cf77ce3 ("Documentation: devicetree: m25p80: add "nor-jedec"
binding"), we added a generic "nor-jedec" binding to catch all
mostly-compatible SPI NOR flash which can be detected via the READ ID
opcode (0x9F). This was discussed and reviewed at the time, however
objections have come up since then as part of this discussion:http://lkml.kernel.org/g/20150511224646.GJ32500@ld-irv-0074
It seems the parties involved agree that "jedec,spi-nor" does a better
job of capturing the fact that this is SPI-specific, not just any NOR
flash.This binding was only merged for v4.1-rc1, so it's still OK to change
the naming.At the same time, let's move the documentation to a better name.
Next up: stop referring to code (drivers/mtd/devices/m25p80.c) from the
documentation.Signed-off-by: Brian Norris
Cc: Marek Vasut
Cc: Rafał Miłecki
Cc: Rob Herring
Cc: Pawel Moll
Cc: Ian Campbell
Cc: Kumar Gala
Cc: devicetree@vger.kernel.org
Acked-by: Stephen Warren
Acked-by: Geert Uytterhoeven
Acked-by: Mark Rutland
11 May, 2015
2 commits
-
KVM may turn a user page to a kernel page when kernel writes a readonly
user page if CR0.WP = 1. This shadow page entry will be reused after
SMAP is enabled so that kernel is allowed to access this user pageFix it by setting SMAP && !CR0.WP into shadow page's role and reset mmu
once CR4.SMAP is updatedSigned-off-by: Xiao Guangrong
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini -
A read() from a pty master may mistakenly indicate EOF (errno == -EIO)
after the pty slave has closed, even though input data remains to be read.
For example,pty slave | input worker | pty master
| |
| | n_tty_read()
pty_write() | | input avail? no
add data | | sleep
schedule worker --->| | .
|---> flush_to_ldisc() | .
pty_close() | fill read buffer | .
wait for worker | wakeup reader --->| .
| read buffer full? |---> input avail ? yes
|= 4096 so the ldisc read buffer
is empty
3. the subsequent read() occurs before the kicked worker has processed
more inputHowever, the underlying cause of the race is that data is pipelined, while
tty state is not; ie., data already written by the pty slave end is not
yet visible to the pty master end, but state changes by the pty slave end
are visible to the pty master end immediately.Pipeline the TTY_OTHER_CLOSED state through input worker to the reader.
1. Introduce TTY_OTHER_DONE which is set by the input worker when
TTY_OTHER_CLOSED is set and either the input buffers are flushed or
input processing has completed. Readers/polls are woken when
TTY_OTHER_DONE is set.
2. Reader/poll checks TTY_OTHER_DONE instead of TTY_OTHER_CLOSED.
3. A new input worker is started from pty_close() after setting
TTY_OTHER_CLOSED, which ensures the TTY_OTHER_DONE state will be
set if the last input worker is already finished (or just about to
exit).Remove tty_flush_to_ldisc(); no in-tree callers.
Fixes: 52bce7f8d4fc ("pty, n_tty: Simplify input processing on final close")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96311
BugLink: http://bugs.launchpad.net/bugs/1429756
Cc: # 3.19+
Reported-by: Andy Whitcroft
Reported-by: H.J. Lu
Signed-off-by: Peter Hurley
Signed-off-by: Greg Kroah-Hartman
10 May, 2015
1 commit
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Pull ARM SoC fixes from Arnd Bergmann:
"A few patches have come up since the merge window. The largest one is
a rewrite of the PXA lubbock/mainstone IRQ handling. This was already
broken in 2011 by a change to the GPIO code and only noticed now.The other changes contained here are:
MAINTAINERS file updates:
- Ray Jui and Scott Branden are now co-maintainers for some of the
mach-bcm chips, while Christian Daudt and Marc Carino have stepped
down.- Andrew Victor is no longer maintaining at91. Instead, Alexandre
Belloni now becomes an official maintainer, after having done a
bulk of the work for a while.- Baruch Siach, who added the mach-digicolor platform in 4.1 is now
listed as maintainer- The git URL for mach-socfpga has changed
Bug fixes:
- Three bug fixes for new rockchip rk3288 code
- A regression fix to make SD card support work on certain ux500
boards- multiple smaller dts fixes for imx, omap, mvebu, and shmobile
- a regression fiix for omap3 power consumption
- a fix for regression in the ARM CCI bus driver
Configuration changes:
- more imx platforms are now enabled in multi_v7_defconfig"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits)
MAINTAINERS: add Conexant Digicolor machines entry
MAINTAINERS: socfpga: update the git repo for SoCFPGA
ARM: multi_v7_defconfig: Select more FSL SoCs
MAINTAINERS: replace an AT91 maintainer
drivers: CCI: fix used_mask init in validate_group()
bus: omap_l3_noc: Fix master id address decoding for OMAP5
bus: omap_l3_noc: Fix offset for DRA7 CLK1_HOST_CLK1_2 instance
ARM: dts: dra7: Fix efuse register size for ABB
ARM: dts: am57xx-beagle-x15: Switch GPIO fan number
ARM: dts: am57xx-beagle-x15: Switch UART mux pins
ARM: dts: am437x-sk: reduce col-scan-delay-us
ARM: dts: am437x-sk: fix for new newhaven display module revision
ARM: dts: am57xx-beagle-x15: Fix RTC aliases
ARM: dts: am57xx-beagle-x15: Fix IRQ type for mcp7941x
ARM: dts: omap3: Add #iommu-cells to isp and iva iommu
ARM: omap2plus_defconfig: Enable EXTCON_USB_GPIO
ARM: dts: OMAP3-N900: Add microphone bias voltages
ARM: OMAP2+: Fix omap off idle power consumption creeping up
MAINTAINERS: Update brcmstb entry
MAINTAINERS: Remove Christian Daudt for mach-bcm
...
09 May, 2015
1 commit
-
Since the introduction of clk-si5351 the way we should deal with DT provided
clocks has changed from indexed to named clock phandles. Amend the binding
documentation to reflect named clock phandles by clock-names property.Signed-off-by: Sebastian Hesselbarth
Signed-off-by: Michael Turquette
08 May, 2015
4 commits
-
Pull power management and ACPI fixes from Rafael Wysocki:
"These include three regression fixes (PCI resources management,
ACPI/PNP device enumeration, ACPI SBS on MacBook) and two ACPI
documentation fixes related to GPIO.Specifics:
- Fix for a PCI resources management regression introduced during the
4.0 cycle and related to the handling of ACPI resources'
Producer/Consumer flags that turn out to be useless (Jiang Liu)- Fix for a MacBook regression related to the Smart Battery Subsystem
(SBS) driver causing various problems (stalls on boot, failure to
detect or report battery) to happen and introduced during the 3.18
cycle (Chris Bainbridge)- Fix for an ACPI/PNP device enumeration regression introduced during
the 3.16 cycle caused by failing to include two PNP device IDs into
the list of IDs that PNP device objects need to be created for
(Witold Szczeponik)- Fixes for two minor mistakes in the ACPI GPIO properties
documentation (Antonio Ospite, Rafael J Wysocki)"* tag 'pm+acpi-4.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PNP: add two IDs to list for PNPACPI device enumeration
ACPI / documentation: Fix ambiguity in the GPIO properties document
ACPI / documentation: fix a sentence about GPIO resources
ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook
x86/PCI/ACPI: Make all resources except [io 0xcf8-0xcff] available on PCI bus -
* acpi-resources:
x86/PCI/ACPI: Make all resources except [io 0xcf8-0xcff] available on PCI bus* acpi-battery:
ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook* acpi-doc:
ACPI / documentation: Fix ambiguity in the GPIO properties document
ACPI / documentation: fix a sentence about GPIO resources* acpi-pnp:
ACPI / PNP: add two IDs to list for PNPACPI device enumeration -
…/git/tmlind/linux-omap into fixes
Merge "omap fixes against v4.1-rc1" from Tony Lindgren:
Fixes for omaps, mostly a fix for power power consumption
creeping up during idle, and two l3-noc device fixes:- Fix power consumption creeping up with I2C4 staying on
- Fix n900 microphone bias voltages
- Fix dra7 l3-noc for host clock
- Fix omap5 l3-noc id address decodingThe rest are all just minor dts fixes:
- Fix changed EXTCON_USB_GPIO_USB in defconfig
- Fix missing isp and iva #iommu-cells property
- Various beagle x15 dts fixes for pre-production changes
- Fix am437x-sk display dts entries* tag 'omap-for-v4.1/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
bus: omap_l3_noc: Fix master id address decoding for OMAP5
bus: omap_l3_noc: Fix offset for DRA7 CLK1_HOST_CLK1_2 instance
ARM: dts: dra7: Fix efuse register size for ABB
ARM: dts: am57xx-beagle-x15: Switch GPIO fan number
ARM: dts: am57xx-beagle-x15: Switch UART mux pins
ARM: dts: am437x-sk: reduce col-scan-delay-us
ARM: dts: am437x-sk: fix for new newhaven display module revision
ARM: dts: am57xx-beagle-x15: Fix RTC aliases
ARM: dts: am57xx-beagle-x15: Fix IRQ type for mcp7941x
ARM: dts: omap3: Add #iommu-cells to isp and iva iommu
ARM: omap2plus_defconfig: Enable EXTCON_USB_GPIO
ARM: dts: OMAP3-N900: Add microphone bias voltages
ARM: OMAP2+: Fix omap off idle power consumption creeping up -
Pull "The i.MX fixes for 4.1" from Shawn Guo:
- A couple of imx23-olinuxino device tree fixes regarding to LED GPIO
polarity and USB dr_mode setting
- One i.MX28 device tree fix on AUART4 TX-DMA interrupt name
- Add missing pwm-cells to PWM4 for i.MX25 device tree
- Fix imx6q-phytec device tree to get correct USB VBUS control
- Drop invalid pinctrl-assert-gpios property from imx6qdl-sabreauto
device tree, which was sneaked in from vendor device tree
- One fix on Wolfram's broken email address* tag 'imx-fixes-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx6qdl-sabreauto: remove pinctrl-assert-gpios
ARM: dts: imx28: Fix AUART4 TX-DMA interrupt name
ARM: dts: imx25: Add #pwm-cells to pwm4
ARM: dts: imx6: phyFLEX: USB VBUS control is active-high
ARM: mach-imx: devices: platform-sdhci-esdhc-imx: fix broken email address
ARM: dts: imx23-olinuxino: Fix dr_mode of usb0
ARM: dts: imx23-olinuxino: Fix polarity of LED GPIO
