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Commit 3d5b6fb47a8e68fa311ca2c3447e7f8a7c3a9cf3 ("ACPI: Kill overly
verbose "power state" log messages") removed the actual use of this
variable, but didn't remove the variable itself, resulting in build
warnings like
drivers/acpi/processor_idle.c: In function ‘acpi_processor_power_init’:
drivers/acpi/processor_idle.c:1169: warning: unused variable ‘i’
Just get rid of the now unused variable.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* mark struct vm_area_struct::vm_ops as const
* mark vm_ops in AGP code
But leave TTM code alone, something is fishy there with global vm_ops
being used.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I was recently lucky enough to get a 64-CPU system, so my kernel log
ends up with 64 lines like:
ACPI: CPU0 (power states: C1[C1] C2[C3])
This is pretty useless clutter because this info is already available
after boot from both /sys/devices/system/cpu/cpu*/cpuidle/state?/ as
well as /proc/acpi/processor/CPU*/power.
So just delete the code that prints the C-states in processor_idle.c.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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The message "ACPI: Device needs an ACPI driver" is misleading. The
device _may_ need an ACPI driver, if the BIOS implemented a custom
API for the device in question (which, AFAIK, can't be checked.) If
not, then either a generic ACPI driver may be used (for example
"thermal"), or nothing can be done (other than a white list).
I propose to reword the message to:
ACPI: If an ACPI driver is available for this device, you should use
it instead of the native driver
which I think is more correct. Comments and suggestions welcome.
I also added a message warning about possible problems and system
instability when users pass acpi_enforce_resources=lax, as suggested
by Len.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Alan Jenkins <sourcejedi.lkml@googlemail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fix this problem when CONFIG_THINKPAD_ACPI_HOTKEY_POLL is undefined:
CHECK drivers/platform/x86/thinkpad_acpi.c
drivers/platform/x86/thinkpad_acpi.c:1968:21: error: not an lvalue
CC [M] drivers/platform/x86/thinkpad_acpi.o
drivers/platform/x86/thinkpad_acpi.c: In function 'tpacpi_hotkey_driver_mask_set':
drivers/platform/x86/thinkpad_acpi.c:1968: error: lvalue required as left operand of assignment
Reported-by: Noah Dain <noahdain@gmail.com>
Reported-by: Audrius Kazukauskas <audrius@neutrino.lt>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: move leds-clevo-mail's probe function to .devinit.text
leds: Fix indentation in LEDS_LP3944 Kconfig entry
leds: Fix LED names
leds: Fix leds-pca9532 whitespace issues
leds: fix coding style in worker thread code for ledtrig-gpio.
leds: gpio-leds: fix typographics fault
leds: Add WM831x status LED driver
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
backlight: new driver for ADP5520/ADP5501 MFD PMICs
backlight: extend event support to also support poll()
backlight/eeepc-laptop: Update the backlight state when we change brightness
backlight/acpi: Update the backlight state when we change brightness
backlight: Allow drivers to update the core, and generate events on changes
backlight: switch to da903x driver to dev_pm_ops
backlight: Add support for the Avionic Design Xanthos backlight device.
backlight: spi driver for LMS283GF05 LCD
backlight: move hp680-bl's probe function to .devinit.text
backlight: Add support for new Apple machines.
backlight: mbp_nvidia_bl: add support for MacBookAir 1,1
backlight: Add WM831x backlight driver
Trivial conflicts due to '#ifdef CONFIG_PM' differences in
drivers/video/backlight/da903x_bl.c
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* remove asm/atomic.h inclusion from kref.h -- not needed, linux/types.h
is enough for atomic_t
* remove linux/kref.h inclusion from files which do not need it.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (32 commits)
ACPI: i2c-scmi: don't use acpi_device_uid()
ACPI: simplify building device HID/CID list
ACPI: remove acpi_device_uid() and related stuff
ACPI: remove acpi_device.flags.hardware_id
ACPI: remove acpi_device.flags.compatible_ids
ACPI: maintain a single list of _HID and _CID IDs
ACPI: make sure every acpi_device has an ID
ACPI: use acpi_device_hid() when possible
ACPI: fix synthetic HID for \_SB_
ACPI: handle re-enumeration, when acpi_devices might already exist
ACPI: factor out device type and status checking
ACPI: add acpi_bus_get_status_handle()
ACPI: use acpi_walk_namespace() to enumerate devices
ACPI: identify device tree root by null parent pointer, not ACPI_BUS_TYPE
ACPI: enumerate namespace before adding functional fixed hardware devices
ACPI: convert acpi_bus_scan() to operate on an acpi_handle
ACPI: add acpi_bus_get_parent() and remove "parent" arguments
ACPI: remove unnecessary argument checking
ACPI: remove redundant "type" arguments
ACPI: remove acpi_device_set_context() "type" argument
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
at91_can: Forgotten git 'add' of at91_can.c
TI Davinci EMAC: Fix in vector definition for EMAC_VERSION_2
ax25: Fix ax25_cb refcounting in ax25_ctl_ioctl
virtio_net: Check for room in the vq before adding buffer
virtio_net: avoid (most) NETDEV_TX_BUSY by stopping queue early.
virtio_net: formalize skb_vnet_hdr
virtio_net: don't free buffers in xmit ring
virtio_net: return NETDEV_TX_BUSY instead of queueing an extra skb.
virtio_net: skb_orphan() and nf_reset() in xmit path.
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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Extend the backlight event support to also allow the use of
poll()/select() on actual_brightness.
We already have the entire event hookup anyway, adding a single
function call in one line to get functionality like that is a really
good deal.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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We recently removed the acpi_device_uid() interface because nobody
used it. I don't think it's essential here either.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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In the emac_poll function when looking for interrupt status masks
correct definition must be chosen based on EMAC_VERSION(the bit
mask has changed from version 1 to version 2).
Signed-off-by: Sriram <srk@ti.com>
Acked-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Minor code cleanup, no functional change. Instead of remembering
what HIDs & CIDs to add later, just add them immediately.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Nobody uses acpi_device_uid(), so this patch removes it.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Every acpi_device has at least one ID (if there's no _HID or _CID, we
give it a synthetic or default ID). So there's no longer a need to
check whether an ID exists; we can just use it.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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We now keep a single list of IDs that includes both the _HID and any
_CIDs. We no longer need to keep track of whether the device has a _CID.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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There's no need to treat _HID and _CID differently. Keeping them in
a single list makes code that uses the IDs a little simpler because it
can just traverse the list rather than checking "do we have a HID?",
"do we have any CIDs?"
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This makes sure every acpi_device has at least one ID. If we build an
acpi_device for a namespace node with no _HID or _CID, we sometimes
synthesize an ID like "LNXCPU" or "LNXVIDEO". If we don't even have
that, give it a default "device" ID.
Note that this means things like:
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/HWP0001:00/HWP0002:04/device:00
(a PCI slot SxFy device) will have "hid" and "modprobe" entries, where
they didn't before. These aren't very useful (a HID of "device" doesn't
tell you what *kind* of device it is, so it doesn't help find a driver),
but I don't think they're harmful.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Use acpi_device_hid() rather than accessing acpi_device.pnp.hardware_id
directly.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This makes \_SB_ show up as /sys/devices/LNXSYSTM:00/LNXSYBUS:00
rather than "device:00". This has been broken for a loooong time
(at least since 2.6.13) because device->parent is an acpi_device
pointer, not a handle.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_bus_scan() traverses the namespace to enumerate devices and uses
acpi_add_single_object() to create acpi_devices. When the platform
notifies us of a hot-plug event, we need to traverse part of the namespace
again to figure out what appeared or disappeared. (We don't yet call
acpi_bus_scan() during hot-plug, but I plan to do that in the future.)
This patch makes acpi_add_single_object() notice when we already have
an acpi_device, so we don't need to make a new one.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This patch adds acpi_bus_type_and_status(), which determines the type
of the object and whether we want to build an acpi_device for it. If
it is acpi_device-worthy, it returns the type and the device's current
status.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add acpi_bus_get_status_handle() so we can get the status of a namespace
object before building a struct acpi_device.
This removes a use of "device->flags.dynamic_status", a cached indicator of
whether _STA exists. It seems simpler and more reliable to just evaluate
_STA and catch AE_NOT_FOUND errors.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_bus_scan() currently walks the namespace manually. This patch changes
it to use acpi_walk_namespace() instead.
Besides removing some complicated code, this means we take advantage of the
namespace locking done by acpi_walk_namespace(). The locking isn't so
important at boot-time, but I hope to eventually use this same path to
handle hot-addition of devices, when it will be important.
Note that acpi_walk_namespace() does not actually visit the starting node
first, so we need to do that by hand first.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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We can identify the root of the ACPI device tree by the fact that it
has no parent. This is simpler than passing around ACPI_BUS_TYPE_SYSTEM
and will help remove special treatment of the device tree root.
Currently, we add the root by hand with ACPI_BUS_TYPE_SYSTEM. If we
traverse the tree treating the root as just another device and use
acpi_get_type(), the root shows up as ACPI_TYPE_DEVICE.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This patch changes the order so we enumerate in the "root, namespace,
functional fixed" order instead of the "root, functional fixed, namespace"
order. When I change acpi_bus_scan() to use acpi_walk_namespace(), it
will use the former order, so this patch isolates the order change for
bisectability.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This patch changes acpi_bus_scan() to take an acpi_handle rather than an
acpi_device pointer. I plan to use acpi_bus_scan() in the hotplug path,
and I'd rather not assume that notifications only go to nodes that already
have acpi_devices.
This will also help remove the special case for adding the root node. We
currently add the root by hand before acpi_bus_scan(), but using a handle
here means we can start the acpi_bus_scan() directly with the root even
though it doesn't have an acpi_device yet.
Note that acpi_bus_scan() currently adds and/or starts the *children* of
its device argument. It doesn't do anything with the device itself.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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This patch adds acpi_bus_get_parent(), which ascends the namespace until
it finds a parent with an acpi_device.
Then we use acpi_bus_get_parent() in acpi_add_single_object(), so callers
don't have to figure out or keep track of the parent acpi_device.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_add_single_object() is static, and all callers supply a valid "child"
argument, so we don't need to check it. This patch also remove some
unnecessary initializations.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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We now save the ACPI bus "device_type" in the acpi_device structure, so
we don't need to pass it around explicitly anymore.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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We only pass the "type" to acpi_device_set_context() so we know whether
the device has a handle to which we can attach the acpi_device pointer.
But it's safer to just check for the handle directly, since it's in the
acpi_device already.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Check the acpi_device device_type rather than the HID.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Most uses of the ACPI bus device_type (ACPI_BUS_TYPE_DEVICE,
ACPI_BUS_TYPE_POWER, etc) are during device initialization, but
we do need it later for notify handler installation, since that
is different for fixed hardware devices vs. namespace devices.
This patch saves the device_type in the acpi_device structure,
so we can check that rather than comparing against the _HID string.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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In several cases, functions take handle and parent device pointers in
addition to acpi_device pointers. But the acpi_device structure contains
both the handle and the parent pointer, so it's pointless and error-prone
to pass them all. This patch removes the unnecessary "handle" and "parent"
arguments.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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We never use the "root" argument, so just remove it.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Add debug output for adding an ACPI device. Enable this with
"acpi.debug_layer=0x00010000" (ACPI_BUS_COMPONENT).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Commit 15b8dd53f5ffa changed info->hardware_id from a static array to
a pointer. If hardware_id is non-NULL, it points to a NULL-terminated
string, so we don't need to terminate it explicitly. However, it may
be NULL; in that case, we *can't* add a NULL terminator.
This causes a NULL pointer dereference oops for devices without _HID.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Lin Ming <ming.m.lin@intel.com>
CC: Bob Moore <robert.moore@intel.com>
CC: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh_mobile_ceu_camera: fix compile breakage, caused by a bad merge
sh: Add support DMA Engine to SH7780
sh: Add support DMA Engine to SH7722
sh: enable onenand support in kfr2r09 defconfig.
sh: update defconfigs.
sh: add FSI driver support for ms7724se
sh: Fix up uninitialized variable use caught by gcc 4.4.
sh: Handle unaligned 16-bit instructions on SH-2A.
sh: mach-ecovec24: Add active low setting for sh_eth
sh: includecheck fix: dwarf.c
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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] Add support for the Avionic Design Xanthos watchdog timer.
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (94 commits)
genetlink: fix netns vs. netlink table locking (2)
3c59x: Get rid of "Trying to free already-free IRQ"
tunnel: eliminate recursion field
ems_pci: fix size of CAN controllers BAR mapping for CPC-PCI v2
net: fix htmldocs sunrpc, clnt.c
Phonet: error on broadcast sending (unimplemented)
Phonet: fix race for port number in concurrent bind()
pktgen: better scheduler friendliness
pktgen: T_TERMINATE flag is unused
ipv4: check optlen for IP_MULTICAST_IF option
ath9k: Initialize txgain and rxgain for newer AR9287 chipsets.
iwlagn: fix panic in iwl{5000,4965}_rx_reply_tx
ath9k: Fix RFKILL bugs
drivers/net/wireless: Use usb_endpoint_dir_out
cfg80211: don't overwrite privacy setting
wl12xx: fix kconfig/link errors
rt2x00: fix the definition of rt2x00crypto_rx_insert_iv
iwlwifi: reduce noise when skb allocation fails
iwlwifi: do not send sync command while holding spinlock
mac80211: fix DTIM setting
...
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This patch adds support for the watchdog timer on Avionic Design Xanthos
boards.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
Fix build of cpm_uart due to core changes
powerpc/8xx: Fix regression introduced by cache coherency rewrite
powerpc/4xx: Fix erroneous xmon warning on PowerPC 4xx
powerpc/mm: Fix 40x and 8xx vs. _PAGE_SPECIAL
powerpc: Cleanup linker script using new linker script macros.
powerpc: Fix ibm,client-architecture-support printout
powerpc: Increase NODES_SHIFT on 64bit from 4 to 8
powerpc/perf_counter: Fix vdso detection
powerpc: Move 64bit heap above 1TB on machines with 1TB segments
powerpc: Change archdata dma_data to a union
powerpc: Rename get_dma_direct_offset get_dma_offset
powerpc/mm: Remove duplicated #include
powerpc/book3e-64: Remove duplicated #include
powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE
powerpc/pmc: Don't access lppaca on Book3E
powerpc: kmalloc failure ignored in vio_build_iommu_table()
hvc_console: Provide (un)locked version for hvc_resize()
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* 'for-linus' of git://repo.or.cz/cris-mirror:
CRIS: Cleanup linker script using new linker script macros.
ARRAY_SIZE changes
CRIS: convert to asm-generic/hardirq.h
CRISv10: Don't autonegotiate if autonegotiation is off
CRIS: fix defconfig build failure
CRIS: add pgprot_noncached
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (103 commits)
ARM: 5719/1: [AT91] Fix AC97 breakage
ARM: 5721/1: MMCI enable the use of a regulator
ARM: 5720/1: Move MMCI header to amba include dir
ARM: 5718/1: Sane busids for RealView board components
ARM: 5715/1: Make kprobes unregistration SMP safe
ARM: 5711/1: locomo.c: CodingStyle cleanups
ARM: 5710/1: at91: add AC97 support to at91sam9rl and at91sam9rlek board
ARM: 5709/1: at91: add AC97 support to at91sam9g45 series and at91sam9m10g45ek board
ARM: 5621/1: at91/dmaengine: integration of at_hdmac driver in at91sam9g45 series
ARM: 5620/1: at91/dmaengine: integration of at_hdmac driver in at91sam9rl
ARM: Add support for checking access permissions on prefetch aborts
ARM: Separate out access error checking
ARM: Ensure correct might_sleep() check in pagefault path
ARM: Update page fault handling for new OOM techniques
ARM: Provide definitions and helpers for decoding the FSR register
ARM: 5712/1: SA1100: initialise spinlock in DMA code
ARM: s3c: fix check of index into s3c_gpios[]
ARM: spitz: fix touchscreen max presure
ARM: STMP3xxx: deallocation with negative index of descriptors[]
Thumb-2: Correctly handle undefined instructions in the kernel
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Linus Torvalds
Alexey Dobriyan
Roland Dreier
Jean Delvare
Henrique de Moraes Holschuh
Michael Hennerich
Bjorn Helgaas
Len Brown
David S. Miller
Sriram
Thierry Reding
Guennadi Liakhovetski