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Currently, the default "save state" and "restore state" routines
for generic PM domains, pm_genpd_default_save_state() and
pm_genpd_default_restore_state(), respectively, only use runtime PM
callbacks provided by device drivers, but in general those callbacks
need not provide the entire necessary functionality. Namely, in
general it may be necessary to execute subsystem (i.e. device type,
device class or bus type) callbacks that will carry out all of the
necessary operations.
For this reason, modify pm_genpd_default_save_state() and
pm_genpd_default_restore_state() to execute subsystem callbacks,
if they are provided, and fall back to driver callbacks otherwise.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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With the introduction of suspend to both into in-kernel hibernation
code, dmesg was getting polluted with backspace characters printed as
part of image saving progress indicator. This patch introduces printing
of progress indicator on image save/load every 10% and one line at a
time. As an additional benefit, all other messages emitted by the kernel
during hibernation/thaw should now print cleanly as well.
Signed-off-by: Bojan Smojver <bojan@rexursive.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Change the behavior of the newly introduced
/sys/power/pm_print_times attribute so that its initial value
depends on initcall_debug, but setting it to 0 will cause device
suspend/resume times not to be printed, even if initcall_debug has
been set. This way, the people who use initcall_debug for reasons
other than PM debugging will be able to switch the suspend/resume
times printing off, if need be.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Added a new knob called /sys/power/pm_print_times. Setting it to 1
enables printing of time taken by devices to suspend and resume.
Setting it to 0 disables this printing (unless overridden by
initcall_debug kernel command line option).
Signed-off-by: Sameer Nanda <snanda@chromium.org>
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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If function tracing is enabled for some of the low-level suspend/resume
functions, it leads to triple fault during resume from suspend, ultimately
ending up in a reboot instead of a resume (or a total refusal to come out
of suspended state, on some machines).
This issue was explained in more detail in commit f42ac38c59e0a03d (ftrace:
disable tracing for suspend to ram). However, the changes made by that commit
got reverted by commit cbe2f5a6e84eebb (tracing: allow tracing of
suspend/resume & hibernation code again). So, unfortunately since things are
not yet robust enough to allow tracing of low-level suspend/resume functions,
suspend/resume is still broken when ftrace is enabled.
So fix this by disabling function tracing during suspend/resume & hibernation.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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It is often useful to suspend to memory after hibernation image has been
written to disk. If the battery runs out or power is otherwise lost, the
computer will resume from the hibernated image. If not, it will resume
from memory and hibernation image will be discarded.
Signed-off-by: Bojan Smojver <bojan@rexursive.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the sonypi driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Mattia Dongili <malattia@linux.it>
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Make the intel_mid_thermal driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
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Make the acer-wmi driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Lee, Chun-Yi <jlee@suse.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
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The legacy PM callbacks provided by the Intel IPS driver are
empty routines returning 0, so they can be safely dropped.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Make the thinkpad_acpi driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Matthew Garrett <mjg@redhat.com>
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Multiple suspend routines in drivers/platform/x86/thinkpad_acpi.c
use take pm_message_t arguments that aren't used by any of them.
Make those routines take no arguments as that's what they should do.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Matthew Garrett <mjg@redhat.com>
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Since the ACPI bus type's PM callbacks only execute the driver ones
without doing anything else, they can be dropped, because the driver
callbacks will be executed by the PM core directly if bus type
(or other subsystem) callbacks are not present.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Since the legacy ACPI driver PM callbacks included into
struct acpi_device_ops are not used any more, drop them.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Since all ACPI drivers in the tree should have been switched
to power management handling based on struct dev_pm_ops,
modify the ACPI bus type driver so that is doesn't execute
legacy driver power management callbacks from the functions
pointed to by the members of the acpi_bus_pm structure.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI power meter driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the fujitsu-tablet driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the classmate-laptop driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
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Make the xo15-ebook driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the toshiba_bluetooth driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Vikram Dhillon <opensolarisdev@gmail.com>
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Make the panasonic-laptop driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the sony-laptop driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the hp_accel driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Éric Piel <eric.piel@tremplin-utc.net>
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Make the toshiba_acpi driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI Smart Battery System driver define its PM callbacks
through a struct dev_pm_ops object rather than by using legacy PM
hooks in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI power resource driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI button driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI battery driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI AC adapter driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI processor driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI thermal driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the ACPI fan driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Modify acpi_bus_type so that it executes PM callbacks provided
by drivers through their struct dev_pm_ops objects, if present,
while still allowing the legacy ACPI PM callbacks to take precedence.
This will make it possible to convert ACPI drivers one by one to
handling PM through struct dev_pm_ops instead of the legacy way.
The code added by this change is temporary and will be removed
when all of the drivers in question have been switched over to
the PM handling based on struct dev_pm_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Make the acpi_bus_type bus type define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct bus_type.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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None of the drivers implementing the ACPI device suspend callback
uses the pm_message_t argument of it, so this argument may be dropped
entirely from that callback. This will simplify switching the ACPI
bus type to PM handling based on struct dev_pm_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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Currently only used when packet split mode is enabled with jumbo frames,
IP payload checksum (for fragmented UDP packets) is mutually exclusive with
receive hashing offload since the hardware uses the same space in the
receive descriptor for the hardware-provided packet checksum and the RSS
hash, respectively. Users currently must disable jumbos when receive
hashing offload is enabled, or vice versa, because of this incompatibility.
Since testing has shown that IP payload checksum does not provide any real
benefit, just remove it so that there is no longer a choice between jumbos
or receive hashing offload but not both as done in other Intel GbE drivers
(e.g. e1000, igb).
Also, add a missing check for IP checksum error reported by the hardware;
let the stack verify the checksum when this happens.
CC: stable <stable@vger.kernel.org> [3.4]
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Basic suspend/resume is fixed by ensuring that the PGSR registers are
set correctly before sleep mode is entered. In particular four of the
active low resets need to be driven high while in sleep mode, otherwise
the unit resets itself instead of suspending. Another problem was that
the PCFR_GPROD bit is set by the HTC bootloader; this caused GPIO reset
(i.e. the reset button) to fail immediately after returning from sleep
mode.
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
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It was noticed recently that when we send data on a transport, its possible that
we might bundle a sack that arrived on a different transport. While this isn't
a major problem, it does go against the SHOULD requirement in section 6.4 of RFC
2960:
An endpoint SHOULD transmit reply chunks (e.g., SACK, HEARTBEAT ACK,
etc.) to the same destination transport address from which it
received the DATA or control chunk to which it is replying. This
rule should also be followed if the endpoint is bundling DATA chunks
together with the reply chunk.
This patch seeks to correct that. It restricts the bundling of sack operations
to only those transports which have moved the ctsn of the association forward
since the last sack. By doing this we guarantee that we only bundle outbound
saks on a transport that has received a chunk since the last sack. This brings
us into stricter compliance with the RFC.
Vlad had initially suggested that we strictly allow only sack bundling on the
transport that last moved the ctsn forward. While this makes sense, I was
concerned that doing so prevented us from bundling in the case where we had
received chunks that moved the ctsn on multiple transports. In those cases, the
RFC allows us to select any of the transports having received chunks to bundle
the sack on. so I've modified the approach to allow for that, by adding a state
variable to each transport that tracks weather it has moved the ctsn since the
last sack. This I think keeps our behavior (and performance), close enough to
our current profile that I think we can do this without a sysctl knob to
enable/disable it.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Vlad Yaseivch <vyasevich@gmail.com>
CC: David S. Miller <davem@davemloft.net>
CC: linux-sctp@vger.kernel.org
Reported-by: Michele Baldessari <michele@redhat.com>
Reported-by: sorin serban <sserban@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Using ethtool -C ethX rx-usecs 0 crashes with a divide by zero.
Refactor this function to fix this issue and make it more clear
what the intent of each conditional is. Add comment regarding
using a setting of zero.
CC: stable <stable@vger.kernel.org> [3.3+]
CC: David Ahern <daahern@cisco.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* lpc32xx/devel: (22 commits)
ARM: LPC32xx: Move i2s1 dma enabling to clock.c
ARM: LPC32xx: Move uart6 irda disable to serial.c
ARM: LPC32xx: Cleanup board init, remove duplicate clock init
ARM: LPC32xx: Remove spi chip definitions
ARM: LPC32xx: Remove spi chipselect request from board init
ARM: LPC32xx: Add dt settings to the at25 node
ARM: LPC32xx: Build arch dtbs
ARM: LPC32xx: Fix lpc32xx.dtsi status property: "disable" -> "disabled"
ARM: LPC32xx: Remove mach specific ARCH_NR_GPIOS, use default
ARM: LPC32xx: High Speed UART configuration via DT
ARM: LPC32xx: DT conversion of Standard UARTs
ARM: LPC32xx: DTS adjustment for using pl18x primecell
ARM: LPC32xx: Add MMC controller support
ARM: LPC32xx: Defconfig update
ARM: LPC32xx: Clock adjustment for key matrix controller
ARM: LPC32xx: DTS adjustment for key matrix controller
ARM: LPC32xx: Add dts for EA3250 reference board
ARM: LPC32xx: Adjust dtsi file for MLC controller configuration
ARM: LPC32xx: Add DMA configuration to platform data
ARM: LPC32xx: Remove SLC controller initialization from platform init
...
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* imx/cpuidle:
ARM: imx: Add imx6q cpuidle driver
ARM: imx: Add imx5 cpuidle
ARM: imx: Add common imx cpuidle init functionality.
ARM: imx: Enable imx53 low power idle
ARM: imx: clean and consolidate imx5 suspend and idle code
ARM: imx: Add comments to tzic_enable_waker()
ARM: imx: Modify IMX_IO_P2V macro
Resolved trivial context conflict in arch/arm/plat-mxc/include/mach/common.h
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Another week, another batch of fixes.
All are small, contained, targeted fixes for explicit problems --
mostly build and boot failures across i.MX, OMAP, Renesas/Shmobile and
Samsung."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: imx6q: fix suspend regression caused by common clk migration
ARM: OMAP4470: Fix OMAP4470 boot failure
ARM: EXYNOS: Fix EXYNOS_DEV_DMA Kconfig entry
ARM: OMAP2+: nand: fix build error when CONFIG_MTD_ONENAND_OMAP2=n
ARM: shmobile: r8a7779: Route all interrupts to ARM
ARM: shmobile: kzm9d: use late init machine hook
ARM: shmobile: kzm9g: use late init machine hook
ARM: mach-shmobile: armadillo800eva: Use late init machine hook
ARM: SAMSUNG: Fix for S3C2412 EBI memory mapping
ARM: mach-shmobile: add missing GPIO IRQ configuration on mackerel
ARM: mach-shmobile: Fix build when SMP is enabled and EMEV2 is not enabled
ARM: shmobile: sh7372: bugfix: chclr_offset base
ARM: shmobile: sh73a0: bugfix: SY-DMAC number
ARM: SAMSUNG: Should check for IS_ERR(clk) instead of NULL
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Fix kernel-doc warnings in printk.c: use correct parameter name.
Warning(kernel/printk.c:2429): No description found for parameter 'buf'
Warning(kernel/printk.c:2429): Excess function parameter 'line' description in 'kmsg_dump_get_buffer'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix kernel-doc warning. This struct member was removed in commit
875682648b89 ("irq: Remove irq_chip->release()") so remove its
associated kernel-doc entry also.
Warning(include/linux/irq.h:338): Excess struct/union/enum/typedef member 'release' description in 'irq_chip'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
* 'v3.5-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Fix EXYNOS_DEV_DMA Kconfig entry
ARM: SAMSUNG: Fix for S3C2412 EBI memory mapping
ARM: SAMSUNG: Should check for IS_ERR(clk) instead of NULL
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When moving to common clk framework, the imx6q clks rom and mmdc_ch1_axi
get different on/off states than old clk driver, which breaks suspend
function. There might be a better way to manage these clocks, but let's
takes the old clk driver approach to fix the regression first.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
"Here's one more regression fix that I missed earlier, and a
trivial fix to get omap4470 booting."
* tag 'omap-fixes-for-v3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP4470: Fix OMAP4470 boot failure
ARM: OMAP2+: nand: fix build error when CONFIG_MTD_ONENAND_OMAP2=n
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull ACPI & Power Management patches from Len Brown.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
acpi_pad: fix power_saving thread deadlock
ACPI video: Still use ACPI backlight control if _DOS doesn't exist
ACPI, APEI, Avoid too much error reporting in runtime
ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding
ACPI: Remove one board specific WARN when ignoring timer overriding
ACPI: Make acpi_skip_timer_override cover all source_irq==0 cases
ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI
ACPI sysfs.c strlen fix
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver Core fixes from Greg Kroah-Hartman:
"Here is a number of printk() fixes, specifically a few reported by the
crazy blog program that ships in SUSE releases (that's "boot log" and
not "web log", it predates the general "blog" terminology by many
years), and the restoration of the continuation line functionality
reported by Stephen and others. Yes, the changes seem a bit big this
late in the cycle, but I've been beating on them for a while now, and
Stephen has even optimized it a bit, so all looks good to me.
The other change in here is a Documentation update for the stable
kernel rules describing how some distro patches should be backported,
to hopefully drive a bit more response from the distros to the stable
kernel releases.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
printk: Optimize if statement logic where newline exists
printk: flush continuation lines immediately to console
syslog: fill buffer with more than a single message for SYSLOG_ACTION_READ
Revert "printk: return -EINVAL if the message len is bigger than the buf size"
printk: fix regression in SYSLOG_ACTION_CLEAR
stable: Allow merging of backports for serious user-visible performance issues
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