kernel/linux.git/drivers/iio/buffer/industrialio-buffer-cb.c, branch v7.0.10

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

iio: buffer: document that buffer callback must be context safe

2025-10-13T07:37:24+00:00

Document that the callback registered with iio_channel_get_all_cb() must be safe to call from any context since it is called from by iio_push_to_buffer() which can be called in any context. Signed-off-by: David Lechner Signed-off-by: Jonathan Cameron

iio: buffer: buffer-cb: drop double initialization of demux list

2025-08-16T10:57:06+00:00

Drop the call to INIT_LIST_HEAD(&cb_buff->buffer.demux_list). That's already done in iio_buffer_init(&cb_buff->buffer). Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250725-iio-minor-cleanup-v1-1-4e561372142e@analog.com Signed-off-by: Jonathan Cameron

iio: buffer: make use of iio_get_masklength()

2024-07-29T19:31:07+00:00

Use iio_get_masklength() to access '.masklength' so it can be annotated as __private when there are no more direct users of it. While at it, remove some unneeded line breaks. Signed-off-by: Nuno Sa Reviewed-by: Alexandru Ardelean Link: https://patch.msgid.link/20240702-dev-iio-masklength-private-v1-3-98193bf536a6@analog.com Signed-off-by: Jonathan Cameron

iio: buffer: Return error if no callback is given

2020-12-03T19:32:40+00:00

Return error in case no callback is provided to `iio_channel_get_all_cb()`. There's no point in setting up a buffer-cb if no callback is provided. Signed-off-by: Nuno Sá Reviewed-by: Olivier Moysan Link: https://lore.kernel.org/r/20201121161457.957-3-nuno.sa@analog.com Signed-off-by: Jonathan Cameron

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

iio: buffer: Switch to bitmap_zalloc()

2019-04-04T19:19:51+00:00

Switch to bitmap_zalloc() to show clearly what we are allocating. Besides that it returns pointer of bitmap type instead of opaque void *. Signed-off-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

IIO: consumer: allow to set buffer sizes

2018-01-10T10:30:14+00:00

Add iio consumer API to set buffer size and watermark according to sysfs API. Signed-off-by: Arnaud Pouliquen Reviewed-by: Jonathan Cameron Signed-off-by: Mark Brown

iio:buffer.h - split into buffer.h and buffer_impl.h

2017-01-10T19:54:55+00:00

buffer.h supplies everything needed for devices using buffers. buffer_impl.h supplies access to the internals as needed to write a buffer implementation. This was really motivated by the mess that turned up in the kernel-doc documentation pulled in by the new sphinx docs. It made it clear that our logical separations in headers were generally terrible. The buffer case was easy to sort out without greatly effecting drivers so here it is. Signed-off-by: Jonathan Cameron Reviewed-by: Lars-Peter Clausen