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David Lechner f13768b9b8 iio: temperature: maxim_thermocouple: use DMA-safe buffer for spi_read() 
[ Upstream commit ae5bc07ec9 ]

Replace using stack-allocated buffers with a DMA-safe buffer for use
with spi_read(). This allows the driver to be safely used with
DMA-enabled SPI controllers.

The buffer array is also converted to a struct with a union to make the
usage of the memory in the buffer more clear and ensure proper alignment.

Fixes: 1f25ca11d8 ("iio: temperature: add support for Maxim thermocouple chips")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250721-iio-use-more-iio_declare_buffer_with_ts-3-v2-1-0c68d41ccf6c@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ iio_push_to_buffers_with_ts() => iio_push_to_buffers_with_timestamp() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:28:47 +02:00
arch powerpc/boot: Fix build with gcc 15 2025-08-28 16:28:46 +02:00
block block: reject invalid operation in submit_bio_noacct 2025-08-28 16:28:40 +02:00
certs
crypto crypto: jitter - fix intermediary handling 2025-08-28 16:28:26 +02:00
Documentation mptcp: disable add_addr retransmission when timeout is 0 2025-08-28 16:28:44 +02:00
drivers iio: temperature: maxim_thermocouple: use DMA-safe buffer for spi_read() 2025-08-28 16:28:47 +02:00
fs use uniform permission checks for all mount propagation changes 2025-08-28 16:28:44 +02:00
include compiler: remove __ADDRESSABLE_ASM{_STR,}() again 2025-08-28 16:28:46 +02:00
init
io_uring io_uring/net: commit partial buffers on retry 2025-08-28 16:28:11 +02:00
ipc
kernel tracing: Limit access to parser->buffer when trace_get_user failed 2025-08-28 16:28:46 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:35:14 +02:00
LICENSES
mm mm/memory-failure: fix infinite UCE for VM_PFNMAP pfn 2025-08-28 16:28:43 +02:00
net tls: fix handling of zero-length records on the rx_list 2025-08-28 16:28:46 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 11:00:06 +02:00
samples samples: mei: Fix building on musl libc 2025-08-15 12:08:43 +02:00
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:28:29 +02:00
security apparmor: use the condition in AA_BUG_FMT even with debug disabled 2025-08-28 16:28:28 +02:00
sound ALSA: hda/realtek: Add support for HP EliteBook x360 830 G6 and EliteBook 830 G6 2025-08-28 16:28:43 +02:00
tools selftests: mptcp: pm: check flush doesn't reset limits 2025-08-28 16:28:44 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile kbuild: userprogs: use correct linker when mixing clang and GNU ld 2025-08-28 16:28:42 +02:00
README

README 

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.