A call to forget_cached_acl() was recently added to the lustre file
system, but this is only available when CONFIG_FS_POSIX_ACL is
enabled, otherwise the build now fails with:
lustre/llite/file.c: In function 'll_get_acl':
lustre/llite/file.c:3134:2: error: implicit declaration of function 'forget_cached_acl' [-Werror=implicit-function-declaration]
forget_cached_acl(inode, type);
This adds one more #ifdef for this call, corresponding to the
other 22 such checks for ACL in lustre.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: b788dc51e4 ("staging: lustre: llite: drop acl from cache")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The semaphore ln_rc_signal is used as completion, so convert it to
struct completion. Semaphores are going away in the future.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The lloop device was original developed to work around
the lack of direct I/O for the default loop back device.
Also the lloop device greatly out performed the default
loop back device. The lloop hasn't been worked on for
some time and now it no longer out performs the loop
device and loop now supports direct I/O. Since this is
the case we can delete this device.
Signed-off-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
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Merge tag 'iio-for-4.8a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of IIO new device support, features and cleanups for the 4.8 cycle.
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
Changes return statements in visornic_rx() to use literals instead of a
variable. Also changes function description to reflect the correct return
type.
Signed-off-by: David Binder <david.binder@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes the vague -1 return values to -EPERM.
This operation is not supported is a good alternative
to -1 because the return is basically telling the caller
that the processor doesn't support vmcall operations.
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes the vague -1 return value to -EINVAL
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes the vague -1 return values to -EFAULT since
it would be the most appropriate, given that this error
would only occur in an unexpected bad offset field.
Resulting in a bad address.
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes the vague -1 return value to -EBUSY
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes the vague -1 return value to -EINVAL
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes a few checkpatch warnings in visorhba:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Removes an extraneous error check in devdata_initialize(), and updates the
function comment accordingly.
Signed-off-by: David Binder <david.binder@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changes the conditional logic to check for an error code instead
of a success code.
Signed-off-by: David Binder <david.binder@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Returns 0 instead of variable rc in visorhba_init().
Signed-off-by: David Binder <david.binder@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changes the conditional logic by looking for the absence of work
to do, instead of the opposite.
Signed-off-by: David Binder <david.binder@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The prior patch which simplified the visorhba debugfs interface made it so
visorhbas_open[] and VISORHBA_OPEN_MAX were no longer needed, so they have
now been deleted.
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
debugfs info for each visorhba device is now presented by a file named of
the following form within the debugfs tree:
visorhba/vbus<x>:dev<y>/info
where <x> is the vbus number, and <y> is the relative device number.
Also, the debugfs presentation function was converted to use the seq_file
interface, so that it could access the device context without resorting to
a global array. This also simplified the function.
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The handling of CMD_NOTIFYGUEST_TYPE messages from the IO partition appears
to be only partially implemented, but fortunately it is never used in our
current environment. This patch deletes the unused code.
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch is necessary to enable ANY task mgmt command to complete
successfully via visorhba.
When issuing a task mgmt command (CMD_SCSITASKMGMT_TYPE) to the IO
partition (back-end), forward_taskmgmt_command() includes pointers
within the command area that will be used to wake up the issuing
process and provide the result when the command completes:
cmdrsp->scsitaskmgmt.notify_handle = (u64)¬ifyevent;
cmdrsp->scsitaskmgmt.notifyresult_handle = (u64)¬ifyresult;
'notify_handle' is a pointer to a 'wait_queue_head_t' variable, and
'notifyresult' is a pointer to an int. Both of these are just local
stack variables in the issuing process.
The way it's supposed to happen is that when the IO partition completes
the command, in our completion handling we get copies of those pointers
back from the IO partition, where we stash the result of the command at
'*notifyresult' (which should not be 0xffff, because that is the initial
value that the caller is looking to see a change in), and wake up the
wait queue at '*notify_handle'. There are several places we do that dance,
but prior to this patch, we always do it WRONG, like:
cmdrsp->scsitaskmgmt.notifyresult_handle = TASK_MGMT_FAILED;
wake_up_all((wait_queue_head_t *)cmdrsp->scsitaskmgmt.notify_handle);
The wake_up_all() part is correct (albeit with the help of the sloppy
pointer casting, but that's irrelevant to the bug), but the assignment of
'notifyresult_handle' is WRONG, and SHOULD read:
*(int *)(cmdrsp->scsitaskmgmt.notifyresult_handle) = TASK_MGMT_FAILED;
Without this change, the caller is NEVER going to notice a change in his
local value of 'notifyresult' when he does the:
if (!wait_event_timeout(notifyevent, notifyresult != 0xffff,
msecs_to_jiffies(45000)))
and hence will be timing out EVERY taskmgmt command.
This patch also eliminates the need for sloppy casting of pointers
back-and-forth between u64 values, with the help of idr_alloc() to provide
handles for us. It is the generated int handles we pass to the IO
partition to denote our completion context, and these are validated and
converted back to the required pointers when the task mgmt commands are
returned back to us by the IO partition.
== Testing ==
You must enable dynamic debugging in visorhba (build kernel with
'CONFIG_DYNAMIC_DEBUG=y', provide kernel parameter 'visorhba.dyndbg=+p')
to see kernel messages involved with visorhba scsi task mgmt commands,
which were added in this patch in the form of a few dev_dbg() / pr_debug()
messages.
In order to inject faults necessary to get visorhba to actully issue scsi
task mgmt commands, you will need to compile a kernel with
CONFIG_FAIL_IO_TIMEOUT and friends, in the "Kernel hacking" section:
* Enable "Fault-injection framework"
* Enable "Fault-injection capability for disk IO"
* Enable "Fault-injection capability for faking disk interrupts"
* Enable "Debugfs entries for fault-injection capabilities"
When running a kernel with those options, you can manually inject a fault
that will force a scsi task mgmt command to be issued like this:
# mount -t debugfs nodev /sys/kernel/debug
# cd /sys/kernel/debug/fail_io_timeout
# cat interval
1
# cat probability
0
# cat times
1
# echo 100 >probability
# cd /sys/block/sda
# l | grep fail
-rw-r--r-- 1 root root 4096 May 5 10:53 io-timeout-fail
-rw-r--r-- 1 root root 4096 May 5 10:54 make-it-fail
# echo 1 >io-timeout-fail
# echo 1 >make-it-fail
To test this patch, after performing the above steps, I did something to
force a block device i/o, then shortly afterwards examined the kernel log.
There I found evidence that visorhba had successfully issued a task mgmt
command, and that it completed successfully:
[ 333.352612] FAULT_INJECTION: forcing a failure.
name fail_io_timeout, interval 1, probability 100, space 0, times 1
[ 333.352617] CPU: 0 PID: 295 Comm: vhba_incoming Tainted: G C
4.6.0-rc3-ARCH+ #2
[ 333.352619] Hardware name: Dell Inc. PowerEdge T110/ ,
BIOS 1.23 12/15/2009
[ 333.352620] 0000000000000000 ffff88001d1a7dd0 ffffffff8125beeb
ffffffff818507c0
[ 333.352623] 0000000000000064 ffff88001d1a7df0 ffffffff8128047a
ffff8800113462b0
[ 333.352625] ffff88000e523000 ffff88001d1a7e00 ffffffff81241c79
ffff88001d1a7e18
[ 333.352627] Call Trace:
[ 333.352634] [<ffffffff8125beeb>] dump_stack+0x4d/0x72
[ 333.352637] [<ffffffff8128047a>] should_fail+0x11a/0x120
[ 333.352641] [<ffffffff81241c79>] blk_should_fake_timeout+0x29/0x30
[ 333.352643] [<ffffffff81241c36>] blk_complete_request+0x16/0x30
[ 333.352654] [<ffffffffa0118b36>] scsi_done+0x26/0x80 [scsi_mod]
[ 333.352657] [<ffffffffa014a56c>] process_incoming_rsps+0x2bc/0x770
[visorhba]
[ 333.352661] [<ffffffff81095630>] ? wait_woken+0x80/0x80
[ 333.352663] [<ffffffffa014a2b0>] ? add_scsipending_entry+0x100/0x100
[visorhba]
[ 333.352666] [<ffffffff81077759>] kthread+0xc9/0xe0
[ 333.352669] [<ffffffff814609d2>] ret_from_fork+0x22/0x40
[ 333.352671] [<ffffffff81077690>] ? kthread_create_on_node+0x180/0x180
[ 364.025672] sd 0:0:1:1: visorhba: initiating type=1 taskmgmt command
[ 364.029721] visorhba: notifying initiator with result=0x1
[ 364.029726] sd 0:0:1:1: visorhba: taskmgmt type=1 success; result=0x1
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We never issue SCSI commands of type CMD_VDISKMGMT_TYPE, so there is no
need to have code that processes their completions.
Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove svn-ids and fix typos in the licence declaration. Add my
copyright to the sdio code which I worked on mainly.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
They were counted but never really used anywhere. Also change the printk
to a debug print, since it mostly shows on the expected -ENOMEDIUM on
card removal.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The printouts are not needed, the driver core has enough debug output
for this if wanted. So, use a helper to save boilerplate code.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
trans_start is gone from netdevice, so use the new helper function to
set the mark.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
List all authors, beautify description, match license to what is stated
in file headers, add firmware information.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is only this card supported, no need to iterate over the table.
The resulting firmware filename wasn't used anyway, but came from the
config file or hardcoded default.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Unlike the previous patches which are plain indent outcomes, this has
some manual fixups to be not overly strict with the 80 char limit.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Let's simply specify the struct to keep in sync with kernel coding
style.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We want to remove it, but to do so properly, it is good to have a
working example. Needs to be copied to /lib/firmware in order to be
used.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use proper type for size_t.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We have sane defaults, so we don't need to bail out if there is no
config file. Note that the config file should go away completely in
favour of configuration mechanisms already upstream.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
