21 Dec, 2015
17 commits
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The gnttab_ops structure is never modified, so declare it as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall
Signed-off-by: David Vrabel -
Use READ_ONCE through the code, rather than explicit barriers.
Suggested-by: Mark Rutland
Signed-off-by: Stefano Stabellini
Signed-off-by: David Vrabel -
Signed-off-by: Stefano Stabellini
Reviewed-by: Boris Ostrovsky -
Try XENPF_settime64 first, if it is not available fall back to
XENPF_settime32.No need to call __current_kernel_time() when all the info needed are
already passed via the struct timekeeper * argument.Return NOTIFY_BAD in case of errors.
Signed-off-by: Stefano Stabellini
Acked-by: Arnd Bergmann
Reviewed-by: Boris Ostrovsky -
If Linux is running as dom0, call XENPF_settime64 to update the system
time in Xen on pvclock_gtod notifications.Signed-off-by: Stefano Stabellini
Acked-by: Arnd Bergmann -
Read the wallclock from the shared info page at boot time.
Signed-off-by: Stefano Stabellini
Acked-by: Arnd Bergmann -
The hypervisor actually exposes an additional field to struct
pvclock_wall_clock, with the high 32 bit seconds.Signed-off-by: Stefano Stabellini
Reviewed-by: Julien Grall -
Rename the current XENPF_settime hypercall and related struct to
XENPF_settime32.Signed-off-by: Stefano Stabellini
Acked-by: Arnd Bergmann
Reviewed-by: Boris Ostrovsky -
Signed-off-by: Stefano Stabellini
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The dom0_op hypercall has been renamed to platform_op since Xen 3.2,
which is ancient, and modern upstream Linux kernels cannot run as dom0
and it anymore anyway.Signed-off-by: Stefano Stabellini
Reviewed-by: Boris Ostrovsky -
Register the runstate_memory_area with the hypervisor.
Use pv_time_ops.steal_clock to account for stolen ticks.Signed-off-by: Stefano Stabellini
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Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM64.
Necessary duplication of paravirt.h and paravirt.c with ARM.The only paravirt interface supported is pv_time_ops.steal_clock, so no
runtime pvops patching needed.This allows us to make use of steal_account_process_tick for stolen
ticks accounting.Signed-off-by: Stefano Stabellini
Acked-by: Marc Zyngier -
Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM.
The only paravirt interface supported is pv_time_ops.steal_clock, so no
runtime pvops patching needed.This allows us to make use of steal_account_process_tick for stolen
ticks accounting.Signed-off-by: Stefano Stabellini
Acked-by: Christopher Covington
Acked-by: Ian Campbell
Acked-by: Russell King -
Add include asm/paravirt.h to cputime.c, as steal_account_process_tick
calls paravirt_steal_clock, which is defined in asm/paravirt.h.The ifdef CONFIG_PARAVIRT is necessary because not all archs have an
asm/paravirt.h to include.The reason why currently cputime.c compiles, even though include
is missing, is that on x86 asm/paravirt.h is included
by one of the other headers included in kernel/sched/cputime.c:On arm and arm64, where I am about to introduce asm/paravirt.h and
stolen time support, without #include in cputime.c, I
would get an error.Signed-off-by: Stefano Stabellini
Acked-by: Peter Zijlstra (Intel) -
Signed-off-by: Stefano Stabellini
Acked-by: Ian Campbell
Reviewed-by: Konrad Rzeszutek Wilk -
Pull RTC fixes from Alexandre Belloni:
"Late fixes for the RTC subsystem for 4.4:A fix for a nasty hardware bug in rk808 and an initialization
reordering in da9063 to fix a possible crash"* tag 'rtc-4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: da9063: fix access ordering error during RTC interrupt at system power on
rtc: rk808: Compensate for Rockchip calendar deviation on November 31st
20 Dec, 2015
11 commits
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This fix alters the ordering of the IRQ and device registrations in the RTC
driver probe function. This change will apply to the RTC driver that supports
both DA9063 and DA9062 PMICs.A problem could occur with the existing RTC driver if:
A system is started from a cold boot using the PMIC RTC IRQ to initiate a
power on operation. For instance, if an RTC alarm is used to start a
platform from power off.
The existing driver IRQ is requested before the device has been properly
registered.
i.e.
ret = devm_request_threaded_irq()
comes before
rtc->rtc_dev = devm_rtc_device_register();In this case, the interrupt can be called before the device has been
registered and the handler can be called immediately. The IRQ handler
da9063_alarm_event() contains the function callrtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF);
which in turn tries to access the unavailable rtc->rtc_dev.
The fix is to reorder the functions inside the RTC probe. The IRQ is
requested after the RTC device resource has been registered so that
get_irq_byname is the last thing to happen.Signed-off-by: Steve Twiss
Signed-off-by: Alexandre Belloni -
In A.D. 1582 Pope Gregory XIII found that the existing Julian calendar
insufficiently represented reality, and changed the rules about
calculating leap years to account for this. Similarly, in A.D. 2013
Rockchip hardware engineers found that the new Gregorian calendar still
contained flaws, and that the month of November should be counted up to
31 days instead. Unfortunately it takes a long time for calendar changes
to gain widespread adoption, and just like more than 300 years went by
before the last Protestant nation implemented Greg's proposal, we will
have to wait a while until all religions and operating system kernels
acknowledge the inherent advantages of the Rockchip system. Until then
we need to translate dates read from (and written to) Rockchip hardware
back to the Gregorian format.This patch works by defining Jan 1st, 2016 as the arbitrary anchor date
on which Rockchip and Gregorian calendars are in sync. From that we can
translate arbitrary later dates back and forth by counting the number
of November/December transitons since the anchor date to determine the
offset between the calendars. We choose this method (rather than trying
to regularly "correct" the date stored in hardware) since it's the only
way to ensure perfect time-keeping even if the system may be shut down
for an unknown number of years. The drawback is that other software
reading the same hardware (e.g. mainboard firmware) must use the same
translation convention (including the same anchor date) to be able to
read and write correct timestamps from/to the RTC.Signed-off-by: Julius Werner
Reviewed-by: Douglas Anderson
Signed-off-by: Alexandre Belloni -
Pull tty/serial fixes from Greg KH:
"Here are some tty/serial driver fixes for 4.4-rc6 that resolve some
reported problems. All of these have been in linux-next. The details
are in the shortlog"* tag 'tty-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: Fix GPF in flush_to_ldisc()
serial: earlycon: Add missing spinlock initialization
serial: sh-sci: Fix length of scatterlist
n_tty: Fix poll() after buffer-limited eof push read
serial: 8250_uniphier: fix dl_read and dl_write functions -
Pull USB fixes from Greg KH:
"Here are some USB and PHY fixes for 4.4-rc6. All of them resolve some
reported problems. Full details in the shortlog"* tag 'usb-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: fix invalid memory access in hub_activate()
USB: ipaq.c: fix a timeout loop
phy: core: Get a refcount to phy in devm_of_phy_get_by_index()
phy: cygnus: pcie: add missing of_node_put
phy: miphy365x: add missing of_node_put
phy: miphy28lp: add missing of_node_put
phy: rockchip-usb: add missing of_node_put
phy: berlin-sata: add missing of_node_put
phy: mt65xx-usb3: add missing of_node_put
phy: brcmstb-sata: add missing of_node_put
phy: sun9i-usb: add USB dependency -
Pull md fixes from Neil Brown:
"Four fixes for md:- two recently introduced regressions fixed.
- one older bug in RAID10 - tagged for -stable since 4.2
- one minor sysfs api improvement"* tag 'md/4.4-rc5-fixes' of git://neil.brown.name/md:
Fix remove_and_add_spares removes drive added as spare in slot_store
md: fix bug due to nested suspend
MD: change journal disk role to disk 0
md/raid10: fix data corruption and crash during resync -
Pull powerpc fixes from Michael Ellerman:
- Partial revert of "powerpc: Individual System V IPC system calls"
- pr_warn_once on unsupported OPAL_MSG type from Stewart
- Fix deadlock in opal-irqchip introduced by "Fix double endian
conversion" from Alistair* tag 'powerpc-4.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/opal-irqchip: Fix deadlock introduced by "Fix double endian conversion"
powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type
Partial revert of "powerpc: Individual System V IPC system calls" -
Pull spi fixes from Mark Brown:
"A couple of reference counting bugs here, one in spidev and one with
holding an extra reference in the core that we never freed if we
removed a device, plus a driver specific fix. Both of the refcounting
bugs are very old but they've only been found by observation so
hopefully their impact has been low"* tag 'spi-fix-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: fix parent-device reference leak
spi: spidev: Hold spi_lock over all defererences of spi in release()
spi-fsl-dspi: Fix CTAR Register access -
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes for the v4.4 series. Most prominent: I revert the
error propagation from the .get() function until we can fix up all the
drivers properly for v4.5.- Revert the error number propagation from the .get() vtable entry
temporarily, until we make the proper fixes to all drivers.
- Fix the clamping behaviour in the generic GPIO driver.
- Driver fix for the ath79 driver"* tag 'gpio-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: revert get() to non-errorprogating behaviour
gpio: generic: clamp values from bgpio_get_set()
gpio: ath79: Fix the logic to clear offset bit of AR71XX_GPIO_REG_OE register -
Pull pin control fixes from Linus Walleij:
- Driver fixes for Freescale i.MX7D, Intel, Broadcom 2835
- One MAINTAINERS entry* tag 'pinctrl-v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
MAINTAINERS: pinctrl: Add maintainers for pinctrl-single
pinctrl: bcm2835: Fix initial value for direction_output
pinctrl: intel: fix offset calculation issue of register PAD_OWN
pinctrl: intel: fix bug of register offset calculation
pinctrl: freescale: add ZERO_OFFSET_VALID flag for vf610 pinctrl -
Pull i2c fixes from Wolfram Sang:
"A set of 'usual' driver bugfixes for the I2C subsystem"* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rcar: disable runtime PM correctly in slave mode
i2c: designware: Keep pm_runtime_enable/_disable calls in sync
i2c: designware: fix IO timeout issue for AMD controller
i2c: imx: init bus recovery info before adding i2c adapter
i2c: do not use 0x in front of %pa
i2c: davinci: Increase module clock frequency
i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
i2c: rk3x: populate correct variable for sda_falling_time -
Pull input fixes from Dmitry Torokhov:
"Just a few assorted driver fixes"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elants_i2c - fix wake-on-touch
Input: elan_i2c - set input device's vendor and product IDs
Input: sun4i-lradc-keys - fix typo in binding documentation
Input: atmel_mxt_ts - add maxtouch to I2C table for module autoload
Input: arizona-haptic - fix disabling of haptics device
Input: aiptek - fix crash on detecting device without endpoints
Input: atmel_mxt_ts - add generic platform data for Chromebooks
Input: parkbd - clear unused function pointers
Input: walkera0701 - clear unused function pointers
Input: turbografx - clear unused function pointers
Input: gamecon - clear unused function pointers
Input: db9 - clear unused function pointers
19 Dec, 2015
12 commits
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When we also are I2C slave, we need to disable runtime PM because the
address detection mechanism needs to be active all the time. However, we
can reenable runtime PM once the slave instance was unregistered. So,
use pm_runtime_get_sync/put to achieve this, since it has proper
refcounting. pm_runtime_allow/forbid is like a global knob controllable
from userspace which is unsuitable here.Signed-off-by: Wolfram Sang
Signed-off-by: Wolfram Sang
Cc: stable@kernel.org -
Pull power management fixes from Rafael Wysocki:
"These fix a potential regression introduced during the 4.3 cycle
(generic power domains framework), a nasty bug that has been present
forever (power capping RAPL driver), a build issue (Tegra cpufreq
driver) and a minor ugliness introduced recently (intel_pstate).Specifics:
- Fix a potential regression in the generic power domains framework
introduced during the 4.3 development cycle that may lead to
spurious failures of system suspend in certain situations (Ulf
Hansson).- Fix a problem in the power capping RAPL (Running Average Power
Limits) driver that causes it to initialize successfully on some
systems where it is not supposed to do that which is due to an
incorrect check in an initialization routine (Prarit Bhargava).- Fix a build problem in the cpufreq Tegra driver that depends on the
regulator framework, but that dependency is not reflected in
Kconfig (Arnd Bergmann).- Fix a recent mistake in the intel_pstate driver where a numeric
constant is used directly instead of a symbol defined specifically
for the case in question (Prarit Bhargava)"* tag 'pm+acpi-4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap / RAPL: fix BIOS lock check
cpufreq: intel_pstate: Minor cleanup for FRAC_BITS
cpufreq: tegra: add regulator dependency for T124
PM / Domains: Allow runtime PM callbacks to be re-used during system PM -
Pull SCSI fixes from James Bottomley:
"Three fixes this time, two in SES picked up by KASAN for various types
of buffer overrun. The first is a USB array which returns page 8
whatever is asked for and causes us to overrun with incorrect data
format assumptions and the second is an invalid iteration of page 10
(the additional information page).The final fix is a reversion of a NULL deref fix which caused
suspend/resume not to be called in pairs leading to incorrect device
operation (Jens has queued a more proper fix for the problem in
block)"* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
ses: fix additional element traversal bug
Revert "SCSI: Fix NULL pointer dereference in runtime PM"
ses: Fix problems with simple enclosures -
When sending "SLEEP" command to the controller it ceases scanning
completely and is unable to wake the system up from sleep, so if it is
configured as a wakeup source we should simply configure interrupt for
wakeup and rely on idle logic within the controller to reduce power
consumption while it is not used.Signed-off-by: James Chen
Signed-off-by: Dmitry Torokhov -
Pull media fixes from Mauro Carvalho Chehab.
* tag 'media/v4.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] airspy: increase USB control message buffer size
[media] hackrf: move RF gain ctrl enable behind module parameter
[media] hackrf: fix possible null ptr on debug printing
[media] Revert "[media] ivtv: avoid going past input/audio array" -
Pull btrfs fixes from Chris Mason:
"A couple of small fixes"* 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: check prepare_uptodate_page() error code earlier
Btrfs: check for empty bitmap list in setup_cluster_bitmaps
btrfs: fix misleading warning when space cache failed to load
Btrfs: fix transaction handle leak in balance
Btrfs: fix unprotected list move from unused_bgs to deleted_bgs list -
Merge misc fixes from Andrew Morton:
"Three patches"* emailed patches from Andrew Morton :
include/linux/mmdebug.h: should include linux/bug.h
mm/zswap: change incorrect strncmp use to strcmp
proc: fix -ESRCH error when writing to /proc/$pid/coredump_filter -
mmdebug.h uses BUILD_BUG_ON_INVALID(), assuming someone else included
linux/bug.h. Include it ourselves.This saves build-failures such as:
arch/arm64/include/asm/pgtable.h: In function 'set_pte_at':
arch/arm64/include/asm/pgtable.h:281:3: error: implicit declaration of function 'BUILD_BUG_ON_INVALID' [-Werror=implicit-function-declaration]
VM_WARN_ONCE(!pte_young(pte),Fixes: 02602a18c32d7 ("bug: completely remove code generated by disabled VM_BUG_ON()")
Signed-off-by: James Morse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the use of strncmp in zswap_pool_find_get() to strcmp.
The use of strncmp is no longer correct, now that zswap_zpool_type is
not an array; sizeof() will return the size of a pointer, which isn't
the right length to compare. We don't need to use strncmp anyway,
because the existing params and the passed in params are all guaranteed
to be null terminated, so strcmp should be used.Signed-off-by: Dan Streetman
Reported-by: Weijie Yang
Cc: Seth Jennings
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Writing to /proc/$pid/coredump_filter always returns -ESRCH because commit
774636e19ed51 ("proc: convert to kstrto*()/kstrto*_from_user()") removed
the setting of ret after the get_proc_task call and incorrectly left it as
-ESRCH. Instead, return 0 when successful.Example breakage:
echo 0 > /proc/self/coredump_filter
bash: echo: write error: No such processFixes: 774636e19ed51 ("proc: convert to kstrto*()/kstrto*_from_user()")
Signed-off-by: Colin Ian King
Acked-by: Kees Cook
Cc: [4.3+]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
…l/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Select CONFIG_BITREVERSE for sht15 driver to avoid build failure if
it is not configured.- Force wait for conversion time for the first valid data in tmp102
driver to avoid reporting erroneous data to the thermal subsystem.* tag 'hwmon-for-linus-v4.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (sht15) Select CONFIG_BITREVERSE
hwmon: (tmp102) Force wait for conversion time for the first valid data -
Pull IOMMU fixes from Joerg Roedel:
"Two similar fixes for the Intel and AMD IOMMU drivers to add proper
access checks before calling handle_mm_fault"* tag 'iommu-fixes-v4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Do access checks before calling handle_mm_fault()
iommu/amd: Do proper access checking before calling handle_mm_fault()
