linux-toradex.git/drivers/iio, branch v3.5

iio: drop wrong reference from Kconfig

2012-06-15T00:28:46+00:00

The documentation lives in drivers/staging/iio/Documentation, but
according to Jonathan it's obsolete and needs fixing.

Signed-off-by: Jiri Kosina 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: Fix potential use after free

2012-06-05T04:15:31+00:00

There is no guarantee that the last reference to the iio device has already been
dropped when iio_device_free is called. This means that we can up calling
iio_dev_release after iio_device_free which will lead to a use after free. As
the general rule the struct containing the device should always be freed in the
release callback.

This is what this patch does, it moves freeing the iio device struct as well as
releasing the idr reference to the release callback. To ensure that the device
is not freed before calling iio_device_free the device_unregister call in
iio_device_unregister is broken apart. iio_device_unregister will now only call
device_del to remove the device from the system and iio_device_free will call
put_device to drop the reference we obtained in iio_devce_alloc.

We also have to take care that calling iio_device_free without having called
iio_device_register still works (i.e. this can happen if something failed during
device initialization). For this to work properly two minor changes were
necessary: channel_attr_list needs to be initialized in iio_device_alloc and we
have to check whether the chrdev has been registered before releasing it in
iio_device_release.

This change also brings iio_device_unregister and iio_device_free more in sync
with iio_device_register and iio_device_alloc which call device_add and
device_initialize respectively.

Signed-off-by: Lars-Peter Clausen 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: Use dev_to_iio_dev()

2012-05-14T20:37:45+00:00

Replace open-coded instances of getting a iio_dev struct from a device struct
with dev_to_iio_dev().

Signed-off-by: Lars-Peter Clausen 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

IIO: AT91: Add DT support to at91_adc driver

2012-05-14T20:25:33+00:00

Signed-off-by: Maxime Ripard 
Acked-by: Nicolas Ferre 
Signed-off-by: Greg Kroah-Hartman

ARM: AT91: IIO: Add AT91 ADC driver.

2012-05-14T20:24:09+00:00

Add the ADC driver for Atmel's AT91SAM9G20-EK, AT91SAM9M10G45-EK
and AT91SAM9X5 family boards.

It has support for both software and hardware triggers.

Signed-off-by: Maxime Ripard 
Acked-by: Nicolas Ferre 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: amplifiers: New driver for AD8366 Dual-Digital Variable Gain Amplifier

2012-05-14T20:15:39+00:00

Changes since V1:

Apply review feedback:
	Introduce and use IIO_CHAN_INFO_HARDWAREGAIN
	Introduce and use Use IIO_VAL_INT_PLUS_MICRO_DB

Modify out of staging include paths.
Convert to new iio core API naming.

Changes since V2:

more sanity checking in write_raw

Signed-off-by: Michael Hennerich 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: core: introduce IIO_CHAN_INFO_HARDWAREGAIN

2012-05-14T20:15:39+00:00

Signed-off-by: Michael Hennerich 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: core: introduce dB scle: IIO_VAL_INT_PLUS_MICRO_DB

2012-05-14T20:15:38+00:00

Signed-off-by: Michael Hennerich 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

IIO: industrialio-core: Checking NULL instead of IS_ERR for debugfs_create_dir()

2012-05-08T23:04:11+00:00

If defined CONFIG_DEBUG_FS, debugfs_create_dir returns NULL on failure.

Signed-off-by: Axel Lin 
Signed-off-by: Greg Kroah-Hartman

IIO: industrialio-core: Use simple_open

2012-05-08T23:04:11+00:00

Use simple_open to replace iio_debugfs_open.

Signed-off-by: Axel Lin 
Acked-by: Michael Hennerich 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman