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Alexandru Ardelean ebf35aad0b iio: at91-sama5d2_adc: remove usage of iio_priv_to_dev() helper
We may want to get rid of the iio_priv_to_dev() helper. The reason is that
we will hide some of the members of the iio_dev structure (to prevent
drivers from accessing them directly), and that will also mean hiding the
implementation of the iio_priv_to_dev() helper inside the IIO core.

Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
The iio_priv() helper won't be affected by the rework, as the iio_dev
struct will keep a reference to the private information.

For this driver, not using iio_priv_to_dev(), means reworking some paths to
pass the iio device and using iio_priv() to access the private information,
and also keeping a reference to the iio device for some quirky paths.

One [quirky] path is the at91_adc_workq_handler() which requires the IIO
device & the state struct to push to buffers.
Since this requires the back-ref to the IIO device, the
at91_adc_touch_pos() also uses it. This simplifies the patch a bit. The
information required in this function is mostly for debugging purposes.
Replacing it with a reference to the IIO device would have been a slightly
bigger change, which may not be worth it (for just the debugging purpose
and given that we need the back-ref to the IIO device anyway).

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-07-07 20:24:05 +01:00
arch The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
block blk-mq: fix blk_mq_all_tag_iter 2020-06-07 08:56:50 -06:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto Merge branch 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux 2020-06-10 14:46:54 -07:00
Documentation dt-bindings: iio: scd30: add device binding file 2020-06-27 14:54:10 +01:00
drivers iio: at91-sama5d2_adc: remove usage of iio_priv_to_dev() helper 2020-07-07 20:24:05 +01:00
fs Merge branch 'akpm' (patches from Andrew) 2020-06-11 18:18:50 -07:00
include iio: Move attach/detach of the poll func to the core 2020-06-20 17:34:44 +01:00
init Rebase locking/kcsan to locking/urgent 2020-06-11 20:02:46 +02:00
ipc mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
kernel The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
lib The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
net NFS Client Updates for Linux 5.8 2020-06-11 12:22:41 -07:00
samples Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
scripts The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
security overlayfs update for 5.8 2020-06-09 15:40:50 -07:00
sound sound fixes for 5.8-rc1 2020-06-11 12:38:11 -07:00
tools The Kernel Concurrency Sanitizer (KCSAN) 2020-06-11 18:55:43 -07:00
usr bpfilter: match bit size of bpfilter_umh to that of the kernel 2020-05-17 18:52:01 +09:00
virt mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore modpost: generate vmlinux.symvers and reuse it for the second modpost 2020-06-06 23:38:12 +09:00
.mailmap A fair amount of stuff this time around, dominated by yet another massive 2020-06-01 15:45:27 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS mailmap: change email for Ricardo Ribalda 2020-05-25 18:59:59 -06:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS dt-bindings: iio: scd30: add device binding file 2020-06-27 14:54:10 +01:00
Makefile Rebase locking/kcsan to locking/urgent 2020-06-11 20:02:46 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.