Janne Grunau [Wed, 1 Apr 2009 11:30:06 +0000 (08:30 -0300)]
V4L/DVB (11351): v4l: use usb_interface for v4l2_device_register
If usb_interface.dev is used as dev parameter for v4l2_device_register
v4l2_dev.name contains the v4l driver/module name and usb device and
interface instead of a simple "usb x-y".
It also matches the recommendation to set the parent devices for usb
drivers.
Signed-off-by: Janne Grunau <j@jannau.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
V4L/DVB (11349): mx3-camera: adapt the clock definition and the driver to the new clock naming
With the i.MX31 transition to clkdev clock names have changed, but mistakenly
the "mx3-camera.0" has been registered with a non-NULL connection ID, which is
not necessary, since this is the only clock, used by the capture interface
driver. Fix the clock definition and the driver to use NULL as a connection ID.
Stuart Hall [Thu, 2 Apr 2009 08:25:09 +0000 (05:25 -0300)]
V4L/DVB (11345): af9015: support for DigitalNow TinyTwin remote
Patch to provide basic support for DigitalNow TinyTwin Remote. It uses
same remote as TwinHan AzureWave AD-TU700(704J).
Signed-off-by: Stuart Hall <mailing-lists@enginuities.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
V4L/DVB (11343): au0828: make i2c clock speed per-board configurable
Setup the i2c clock speed to be definable on a per-board basis. This allows
us to explicitly set the clock speed to 30 KHz on the 950q, and also gets rid
of code which sets it on a basis of what chip the i2c master is talking to
at any given time (which could have caused issues because i2c slaves should
never receive commands at a clock higher than their supported clock speed).
Change the #define entries for the i2c registers to be more meaningful, and
document the valid values for the registers. Note that this changeset makes
*no* functional changes to the code.
Any time a struct (especially one not defined by this driver) is
allocated, we MUST zero its underlying storage. This makes our usage
of the struct predictable and robust against future changes where
fields might be added that we don't know about. Failing to do this
with tuner_setup left the config field uninitialized which then caused
trouble with the tuner type used for HVR-1950 devices.
Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Russell King [Sun, 29 Mar 2009 11:12:27 +0000 (08:12 -0300)]
V4L/DVB (11329): Fix buglets in v4l1 compatibility layer
The following patch fixes a few bugs I've noticed in the V4L1
compatibility layer:
- VIDEO_MODE_AUTO for get/set input ioctls was not being handled
- wrong V4L2 ioctl being used in v4l1_compat_select_tuner
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
V4L/DVB (11328): Add AVerMedia A310 USB IDs to CE6230 driver.
The CE6230 DVB USB driver works correctly for the AVerMedia A310 USB2.0
DVB-T tuner. Add the required USB ID's and hardware names so that the
driver will handle it.
Signed-off-by: Juan Jesús García de Soria Lucena <skandalfo@gmail.com> Acked-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
MT9M001 datasheet says, that the data is ready on the falling edge of the pixel
clock, but the driver wrongly sets the SOCAM_PCLK_SAMPLE_RISING flag. Changing
this doesn't seem to produce any visible difference, still, it is better to
comply to the datasheet.
soc-camera re-uses struct devices multiple times in calls to device_register(),
therefore it has to reset the embedded struct kobject to avoid the "tried to
init an initialized object" error, which then also erases its name. Now with
the transition to kobject's name for device names, we have to re-initialise the
name before each call to device_register().
V4L/DVB (11323): pxa-camera: simplify the .buf_queue path by merging two loops
pxa_dma_update_sg_tail() is called only once, runs exactly the same loop as the
caller and has to recalculate the last element in an sg-list, that the caller
has already calculated. Eliminate redundancy by merging the two loops and
re-using the calculated pointer. This also saves a bit of performance which is
always good during video-capture.
Robert Jarzmik [Tue, 31 Mar 2009 06:44:22 +0000 (03:44 -0300)]
V4L/DVB (11322): pxa_camera: Fix overrun condition on last buffer
The last buffer queued will often overrun, as the DMA chain
is finished, and the time the dma irq handler is activated,
the QCI fifos are filled by the sensor.
The fix is to ignore the overrun condition on the last
queued buffer, and restart the capture only on intermediate
buffers of the chain.
Moreover, a fix was added to the very unlikely condition
where in YUV422P mode, one channel overruns while another
completes at the very same time. The capture is restarted
after the overrun as before, but the other channel
completion is now ignored.
The DMA transfers in pxa_camera showed some weaknesses in
multiple queued buffers context :
- poll/select problem
The bug shows up with capture_example tool from v4l2 hg
tree. The process just "stalls" on a "select timeout".
- multiple buffers DMA starting
When multiple buffers were queued, the DMA channels were
always started right away. This is not optimal, as a
special case appears when the first EOF was not yet
reached, and the DMA channels were prematurely started.
- Maintainability
DMA code was a bit obfuscated. Rationalize the code to be
easily maintainable by anyone.
- DMA hot chaining
DMA is not stopped anymore to queue a buffer, the buffer
is queued with DMA running. As a tribute, a corner case
exists where chaining happens while DMA finishes the
chain, and the capture is restarted to deal with the
missed link buffer.
This patch attemps to address these issues / improvements.
All planes were PAGE aligned (ie. 4096 bytes aligned). This
is not consistent with YUV422 format, which requires Y, U
and V planes glued together. The new implementation forces
the alignement on 8 bytes (DMA requirement), which is almost
always the case (granted by width x height being a multiple
of 8).
The test cases include tests in both YUV422 and RGB565 :
- a picture of size 111 x 111 (cross RAM pages example)
- a picture of size 1023 x 4 in (under 1 RAM page)
- a picture of size 1024 x 4 in (exactly 1 RAM page)
- a picture of size 1025 x 4 in (over 1 RAM page)
- a picture of size 1280 x 1024 (many RAM pages)
Robert Jarzmik [Tue, 31 Mar 2009 06:44:21 +0000 (03:44 -0300)]
V4L/DVB (11319): pxa_camera: Enforce YUV422P frame sizes to be 16 multiples
Due to DMA constraints, the DMA chain always transfers bytes
from the QCI fifos to memory in 8 bytes units. In planar
formats, that could mean 0 padding between Y and U plane
(and between U and V plane), which is against YUV422P
standard.
Therefore, a frame size is required to be a multiple of 16
(so U plane size is a multiple of 8). It is enforced in
try_fmt() and set_fmt() primitives, be aligning height then
width on 4 multiples as need be, to reach a 16 multiple.
Merge branch 'audit.b62' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b62' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
Audit: remove spaces from audit_log_d_path
audit: audit_set_auditable defined but not used
audit: incorrect ref counting in audit tree tag_chunk
audit: Fix possible return value truncation in audit_get_context()
audit: ignore terminating NUL in AUDIT_USER_TTY messages
Audit: fix handling of 'strings' with NULL characters
make the e->rule.xxx shorter in kernel auditfilter.c
auditsc: fix kernel-doc notation
audit: EXECVE record - removed bogus newline
Merge branch 'for-next' of git://git.o-hand.com/linux-mfd
* 'for-next' of git://git.o-hand.com/linux-mfd:
mfd: fix da903x warning
mfd: fix MAINTAINERS entry
mfd: Use the value of the final spin when reading the AUXADC
mfd: Storage class should be before const qualifier
mfd: PASIC3: supply clock_rate to DS1WM via driver_data
mfd: remove DS1WM clock handling
mfd: remove unused PASIC3 bus_shift field
pxa/magician: remove deprecated .bus_shift from PASIC3 platform_data
mfd: convert PASIC3 to use MFD core
mfd: convert DS1WM to use MFD core
mfd: Support active high IRQs on WM835x
mfd: Use bulk read to fill WM8350 register cache
mfd: remove duplicated #include from pcf50633
Merge branch 'for-linus' of git://repo.or.cz/cris-mirror
* 'for-linus' of git://repo.or.cz/cris-mirror:
CRISv32: Remove extraneous space between -I and the path.
cris: convert obsolete hw_interrupt_type to struct irq_chip
BUG to BUG_ON changes
cpumask: use mm_cpumask() wrapper: cris
cpumask: Use accessors code.: cris
cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: cris
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
sh: sh7785lcr: Map whole PCI address space.
sh: Fix up DSP context save/restore.
sh: Fix up number of on-chip DMA channels on SH7091.
sh: update defconfigs.
sh: Kill off broken direct-mapped cache mode.
sh: Wire up ARCH_HAS_DEFAULT_IDLE for cpuidle.
sh: Add a command line option for disabling I/O trapping.
sh: Select ARCH_HIBERNATION_POSSIBLE.
sh: migor: Fix up CEU use flags.
input: migor_ts: add wakeup support
rtc: rtc-sh: use set_irq_wake()
input: sh_keysc: use enable/disable_irq_wake()
sh: intc: set_irq_wake() support
sh: intc: install enable, disable and shutdown callbacks
clocksource: sh_cmt: use remove_irq() and remove clockevent workaround
sh: ap325 and Migo-R use new sh_mobile_ceu_info flags
sh: Fix up -Wformat-security whining.
sh: ap325rxa: Add ov772x support, again.
sh: Sanitize asm/mmu.h for assembly use.
sh: Tidy up sh7786 pinmux table.
...
Merge branch 'avr32-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'avr32-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
avr32: add hardware handshake support to atmel_serial
avr32: add RTS/CTS/CLK pin selection for the USARTs
Add RTC support for Merisc boards
avr32: at32ap700x: setup DMA for AC97C in the machine code
avr32: at32ap700x: setup DMA for ABDAC in the machine code
Add Merisc board support
avr32: use gpio_is_valid() to check USBA vbus_pin I/O line
atmel-usba-udc: use gpio_is_valid() to check vbus_pin I/O line
avr32: fix timing LCD parameters for EVKLCD10X boards
avr32: use GPIO line PB15 on EVKLCD10x boards for backlight
avr32: configure MCI detect and write protect pins for EVKLCD10x boards
avr32: set pin mask to alternative 18 bpp for EVKLCD10x boards
avr32: add pin mask for 18-bit color on the LCD controller
avr32: fix 15-bit LCDC pin mask to use MSB lines
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits)
tracing, net: fix net tree and tracing tree merge interaction
tracing, powerpc: fix powerpc tree and tracing tree interaction
ring-buffer: do not remove reader page from list on ring buffer free
function-graph: allow unregistering twice
trace: make argument 'mem' of trace_seq_putmem() const
tracing: add missing 'extern' keywords to trace_output.h
tracing: provide trace_seq_reserve()
blktrace: print out BLK_TN_MESSAGE properly
blktrace: extract duplidate code
blktrace: fix memory leak when freeing struct blk_io_trace
blktrace: fix blk_probes_ref chaos
blktrace: make classic output more classic
blktrace: fix off-by-one bug
blktrace: fix the original blktrace
blktrace: fix a race when creating blk_tree_root in debugfs
blktrace: fix timestamp in binary output
tracing, Text Edit Lock: cleanup
tracing: filter fix for TRACE_EVENT_FORMAT events
ftrace: Using FTRACE_WARN_ON() to check "freed record" in ftrace_release()
x86: kretprobe-booster interrupt emulation code fix
...
Fix up trivial conflicts in
arch/parisc/include/asm/ftrace.h
include/linux/memory.h
kernel/extable.c
kernel/module.c
Eric Paris [Tue, 10 Mar 2009 22:00:14 +0000 (18:00 -0400)]
Audit: remove spaces from audit_log_d_path
audit_log_d_path had spaces in the strings which would be emitted on the
error paths. This patch simply replaces those spaces with an _ or removes
the needless spaces entirely.
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Eric Paris [Mon, 26 Jan 2009 23:09:45 +0000 (18:09 -0500)]
audit: audit_set_auditable defined but not used
after 0590b9335a1c72a3f0defcc6231287f7817e07c8 audit_set_auditable() is now only
used by the audit tree code. If CONFIG_AUDIT_TREE is unset it will be defined
but unused. This patch simply moves the function inside a CONFIG_AUDIT_TREE
block.
cc1: warnings being treated as errors
/home/acme_unencrypted/git/linux-2.6-tip/kernel/auditsc.c:745: error: ‘audit_set_auditable’ defined but not used
make[2]: *** [kernel/auditsc.o] Error 1
make[1]: *** [kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Eric Paris [Tue, 13 Jan 2009 22:32:40 +0000 (17:32 -0500)]
audit: incorrect ref counting in audit tree tag_chunk
tag_chunk has bad exit paths in which the inotify ref counting is wrong.
At the top of the function we found &old_watch using inotify_find_watch().
inotify_find_watch takes a reference to the watch. This is never dropped
on an error path.
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Paul Moore [Wed, 1 Apr 2009 19:47:27 +0000 (15:47 -0400)]
audit: Fix possible return value truncation in audit_get_context()
The audit subsystem treats syscall return codes as type long, unfortunately
the audit_get_context() function mistakenly converts the return code to an
int type in the parameters which could cause problems on systems where the
sizeof(int) != sizeof(long).
Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Miloslav Trmac [Thu, 19 Mar 2009 13:52:47 +0000 (09:52 -0400)]
audit: ignore terminating NUL in AUDIT_USER_TTY messages
AUDIT_USER_TTY, like all other messages sent from user-space, is sent
NUL-terminated. Unlike other user-space audit messages, which come only
from trusted sources, AUDIT_USER_TTY messages are processed using
audit_log_n_untrustedstring().
This patch modifies AUDIT_USER_TTY handling to ignore the trailing NUL
and use the "quoted_string" representation of the message if possible.
Signed-off-by: Miloslav Trmac <mitr@redhat.com> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Miloslav Trmac [Thu, 19 Mar 2009 13:48:27 +0000 (09:48 -0400)]
Audit: fix handling of 'strings' with NULL characters
currently audit_log_n_untrustedstring() uses audit_string_contains_control()
to check if the 'string' has any control characters. If the 'string' has an
embedded NULL audit_string_contains_control() will return that the data has
no control characters and will then pass the string to audit_log_n_string
with the total length, not the length up to the first NULL.
audit_log_n_string() does a memcpy of the entire length and so the actual
audit record emitted may then contain a NULL and then whatever random memory
is after the NULL.
Since we want to log the entire octet stream (if we can't trust the data
to be a string we can't trust that a NULL isn't actually a part of it)
we should just consider NULL as a control character. If the caller is
certain they want to stop at the first NULL they should be using
audit_log_untrustedstring.
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Zhenwen Xu [Thu, 12 Mar 2009 14:16:12 +0000 (22:16 +0800)]
make the e->rule.xxx shorter in kernel auditfilter.c
make the e->rule.xxx shorter in kernel/auditfilter.c
--
---------------------------------
Zhenwen Xu - Open and Free
Home Page: http://zhwen.org
My Studio: http://dim4.cn
>From 99692dc640b278f1cb1a15646ce42f22e89c0f77 Mon Sep 17 00:00:00 2001
From: Zhenwen Xu <Helight.Xu@gmail.com>
Date: Thu, 12 Mar 2009 22:04:59 +0800
Subject: [PATCH] make the e->rule.xxx shorter in kernel/auditfilter.c
Signed-off-by: Zhenwen Xu <Helight.Xu@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Randy Dunlap [Mon, 5 Jan 2009 21:41:13 +0000 (13:41 -0800)]
auditsc: fix kernel-doc notation
Fix auditsc kernel-doc notation:
Warning(linux-2.6.28-git7//kernel/auditsc.c:2156): No description found for parameter 'attr'
Warning(linux-2.6.28-git7//kernel/auditsc.c:2156): Excess function parameter 'u_attr' description in '__audit_mq_open'
Warning(linux-2.6.28-git7//kernel/auditsc.c:2204): No description found for parameter 'notification'
Warning(linux-2.6.28-git7//kernel/auditsc.c:2204): Excess function parameter 'u_notification' description in '__audit_mq_notify'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Jiri Pirko [Fri, 9 Jan 2009 15:44:16 +0000 (16:44 +0100)]
audit: EXECVE record - removed bogus newline
(updated)
Added hunk that changes the comment, the rest is the same.
EXECVE records contain a newline after every argument. auditd converts
"\n" to " " so you cannot see newlines even in raw logs, but they're
there nevertheless. If you're not using auditd, you need to work round
them. These '\n' chars are can be easily replaced by spaces when
creating record in kernel. Note there is no need for trailing '\n' in
an audit record.
record before this patch:
"type=EXECVE msg=audit(1231421801.566:31): argc=4 a0=\"./test\"\na1=\"a\"\na2=\"b\"\na3=\"c\"\n"
record after this patch:
"type=EXECVE msg=audit(1231421801.566:31): argc=4 a0=\"./test\" a1=\"a\" a2=\"b\" a3=\"c\""
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Merge branch 'bzip2-lzma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
* 'bzip2-lzma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
bzip2/lzma: quiet Kconfig warning for INITRAMFS_COMPRESSION_NONE
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits)
cpumask: remove cpumask allocation from idle_balance, fix
numa, cpumask: move numa_node_id default implementation to topology.h, fix
cpumask: remove cpumask allocation from idle_balance
x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus
x86: cpumask: update 32-bit APM not to mug current->cpus_allowed
x86: microcode: cleanup
x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c
cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash
numa, cpumask: move numa_node_id default implementation to topology.h
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
cpumask: remove x86 cpumask_t uses.
cpumask: use cpumask_var_t in uv_flush_tlb_others.
cpumask: remove cpumask_t assignment from vector_allocation_domain()
cpumask: make Xen use the new operators.
cpumask: clean up summit's send_IPI functions
cpumask: use new cpumask functions throughout x86
x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask
cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
x86: unify 32 and 64-bit node_to_cpumask_map
...
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param:
module: use strstarts()
strstarts: helper function for !strncmp(str, prefix, strlen(prefix))
arm: allow usage of string functions in linux/string.h
module: don't use stop_machine on module load
module: create a request_module_nowait()
module: include other structures in module version check
module: remove the SHF_ALLOC flag on the __versions section.
module: clarify the force-loading taint message.
module: Export symbols needed for Ksplice
Ksplice: Add functions for walking kallsyms symbols
module: remove module_text_address()
module: __module_address
module: Make find_symbol return a struct kernel_symbol
kernel/module.c: fix an unused goto label
param: fix charp parameters set via sysfs
Fix trivial conflicts in kernel/extable.c manually.
Merge branch 'core/debugobjects' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/debugobjects' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
debugobjects: delay free of internal objects
debugobjects: replace static objects when slab cache becomes available
debug_objects: add boot-parameter toggle to turn object debugging off again
Merge branch 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
printk: correct the behavior of printk_timed_ratelimit()
vsprintf: unify the format decoding layer for its 3 users, cleanup
fix regression from "vsprintf: unify the format decoding layer for its 3 users"
vsprintf: fix bug in negative value printing
vsprintf: unify the format decoding layer for its 3 users
vsprintf: add binary printf
printk: introduce printk_once()
Fix trivial conflicts (printk_once vs log_buf_kexec_setup() added near
each other) in include/linux/kernel.h.
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (42 commits)
atmel-mci: fix sdc_reg typo
tmio_mmc: add maintainer
mmc: Add OpenFirmware bindings for SDHCI driver
sdhci: Add quirk for forcing maximum block size to 2048 bytes
sdhci: Add quirk for controllers that need IRQ re-init after reset
sdhci: Add quirk for controllers that need small delays for PIO
sdhci: Add set_clock callback and a quirk for nonstandard clocks
sdhci: Add get_{max,timeout}_clock callbacks
sdhci: Add support for hosts reporting inverted write-protect state
sdhci: Add support for card-detection polling
sdhci: Enable only relevant (DMA/PIO) interrupts during transfers
sdhci: Split card-detection IRQs management from sdhci_init()
sdhci: Add support for bus-specific IO memory accessors
mmc_spi: adjust for delayed data token response
omap_hsmmc: Wait for SDBP
omap_hsmmc: Fix MMC3 dma
omap_hsmmc: Disable SDBP at suspend
omap_hsmmc: Do not prefix slot name
omap_hsmmc: Allow cover switch to cause rescan
omap_hsmmc: Add 8-bit bus width mode support
...
Bjorn Helgaas [Mon, 30 Mar 2009 17:48:24 +0000 (17:48 +0000)]
ACPI: processor: use .notify method instead of installing handler directly
This patch adds a .notify() method. The presence of .notify() causes
Linux/ACPI to manage event handlers and notify handlers on our behalf,
so we don't have to install and remove them ourselves.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> CC: Zhang Rui <rui.zhang@intel.com> CC: Zhao Yakui <yakui.zhao@intel.com> CC: Venki Pallipadi <venkatesh.pallipadi@intel.com> CC: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Bjorn Helgaas [Mon, 30 Mar 2009 17:48:18 +0000 (17:48 +0000)]
ACPI: button: use .notify method instead of installing handler directly
This patch adds a .notify() method. The presence of .notify() causes
Linux/ACPI to manage event handlers and notify handlers on our behalf,
so we don't have to install and remove them ourselves.
Note that events from fixed hardware buttons now show up as a special
notify event, so to preserve user-space backward compatibility, we
convert that back to ACPI_BUTTON_NOTIFY_STATUS.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reviewed-by: Alex Chiang <achiang@hp.com> CC: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Bjorn Helgaas [Mon, 30 Mar 2009 17:48:13 +0000 (17:48 +0000)]
ACPI: support acpi_device_ops .notify methods
This patch adds support for ACPI device driver .notify() methods. If
such a method is present, Linux/ACPI installs a handler for device
notifications (but not for system notifications such as Bus Check,
Device Check, etc). When a device notification occurs, Linux/ACPI
passes it on to the driver's .notify() method.
In most cases, this removes the need for drivers to install their own
handlers for device-specific notifications.
For fixed hardware devices like some power and sleep buttons, there's
no notification value because there's no control method to execute a
Notify opcode. When a fixed hardware device generates an event, we
handle it the same as a regular device notification, except we send
a ACPI_FIXED_HARDWARE_EVENT value. This is outside the normal 0x0-0xff
range used by Notify opcodes.
Several drivers install their own handlers for system Bus Check and
Device Check notifications so they can support hot-plug. This patch
doesn't affect that usage.
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>
Johannes Berg [Mon, 30 Mar 2009 10:02:35 +0000 (12:02 +0200)]
toshiba-acpi: remove MAINTAINERS entry
"I'm not much opposed to marking this driver orphaned. I haven't used
a Toshiba laptop in four years or so, and disagree with the recent
additions of bluetooth and wireless control to the driver.
--John"
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: John Belmonte <john@neggie.net> Signed-off-by: Len Brown <len.brown@intel.com>
Mark Brown [Sun, 1 Mar 2009 19:11:58 +0000 (20:11 +0100)]
mfd: Use the value of the final spin when reading the AUXADC
Reverse the order of the tests for loop exit so we use a valid value
before we time out. Vanishingly unlikely to happen since we retry for
several times the expected conversion time.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Philipp Zabel [Tue, 17 Feb 2009 09:09:19 +0000 (10:09 +0100)]
mfd: remove DS1WM clock handling
This driver requests a clock that usually is supplied by the MFD in which
the DS1WM is contained. Currently, it is impossible for a MFD to register
their clocks with the generic clock API due to different implementations
across architectures.
For now, this patch removes the clock handling from DS1WM altogether,
trusting that the MFD enable/disable functions will switch the clock if
needed. The clock rate is obtained from a new parameter in driver_data.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Philipp Zabel [Tue, 17 Feb 2009 09:06:45 +0000 (10:06 +0100)]
mfd: convert PASIC3 to use MFD core
This patch makes htc-pasic3 register the DS1WM and LED cell drivers
through the MFD core infrastructure instead of allocating the platform
devices manually. It also calculates the bus_shift parameter from the
memory resource size.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Mark Brown [Wed, 4 Feb 2009 21:43:55 +0000 (22:43 +0100)]
mfd: Use bulk read to fill WM8350 register cache
Some I2C controllers have high overheads for setting up I2C operations
which makes the register cache setup on startup excessively slow since
it does a lot of small transactions. Reduce this overhead by doing a
bulk read of the entire register bank and filtering out what we don't
need later.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Make non-compat preadv/pwritev use native register size
Instead of always splitting the file offset into 32-bit 'high' and 'low'
parts, just split them into the largest natural word-size - which in C
terms is 'unsigned long'.
This allows 64-bit architectures to avoid the unnecessary 32-bit
shifting and masking for native format (while the compat interfaces will
obviously always have to do it).
This also changes the order of 'high' and 'low' to be "low first". Why?
Because when we have it like this, the 64-bit system calls now don't use
the "pos_high" argument at all, and it makes more sense for the native
system call to simply match the user-mode prototype.
This results in a much more natural calling convention, and allows the
compiler to generate much more straightforward code. On x86-64, we now
generate
which isn't _that_ horrible, but it does show how the natural word size
is just a more sensible interface (same arguments will hold in the user
level glibc wrapper function, of course, so the kernel side is just half
of the equation!)
Note: in all cases the user code wrapper can again be the same. You can
just do
or something like that. That way the user mode wrapper will also be
nicely passing in a zero (it won't actually have to do the shifts, the
compiler will understand what is going on) for the last argument.
And that is a good idea, even if nobody will necessarily ever care: if
we ever do move to a 128-bit lloff_t, this particular system call might
be left alone. Of course, that will be the least of our worries if we
really ever need to care, so this may not be worth really caring about.
[ Fixed for lost 'loff_t' cast noticed by Andrew Morton ]
Acked-by: Gerd Hoffmann <kraxel@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-api@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: Ingo Molnar <mingo@elte.hu> Cc: Ralf Baechle <ralf@linux-mips.org>> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arjan van de Ven [Sat, 10 Jan 2009 19:19:05 +0000 (14:19 -0500)]
ACPI: battery: asynchronous init
The battery driver tends to take quite some time to initialize
(100ms-300ms is quite typical).
This patch initializes the batter driver asynchronously, so that other
things in the kernel can initialize in parallel to this 300 msec.
As part of this, the battery driver had to move to the back
of the ACPI init order (hence the Makefile change).
Without this move, the next ACPI driver would just block
on the ACPI/devicee layer semaphores until the battery driver was
done anyway, not gaining any boot time.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
projects / linux-2.6-omap-h63xx.git / log