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Filename Latest commit message Latest commit date
Arturas Moskvinas 9162730a83 gpio: 74x164: Enable output pins after registers are reset 
[ Upstream commit 530b1dbd97846b110ea8a94c7cc903eca21786e5 ]

Chip outputs are enabled[1] before actual reset is performed[2] which might
cause pin output value to flip flop if previous pin value was set to 1.
Fix that behavior by making sure chip is fully reset before all outputs are
enabled.

Flip-flop can be noticed when module is removed and inserted again and one of
the pins was changed to 1 before removal. 100 microsecond flipping is
noticeable on oscilloscope (100khz SPI bus).

For a properly reset chip - output is enabled around 100 microseconds (on 100khz
SPI bus) later during probing process hence should be irrelevant behavioral
change.

Fixes: 7ebc194d0f (gpio: 74x164: Introduce 'enable-gpios' property)
Link: https://elixir.bootlin.com/linux/v6.7.4/source/drivers/gpio/gpio-74x164.c#L130 [1]
Link: https://elixir.bootlin.com/linux/v6.7.4/source/drivers/gpio/gpio-74x164.c#L150 [2]
Signed-off-by: Arturas Moskvinas <arturas.moskvinas@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-06 14:36:10 +00:00
arch x86/cpu/intel: Detect TME keyid bits before setting MTRR mask registers 2024-03-06 14:36:10 +00:00
block blk-mq: fix IO hang from sbitmap wakeup race 2024-02-23 08:25:03 +01:00
certs
crypto crypto: api - Disallow identical driver names 2024-02-23 08:24:48 +01:00
Documentation net: sysfs: Fix /sys/class/net/<iface> path 2024-02-23 08:25:05 +01:00
drivers gpio: 74x164: Enable output pins after registers are reset 2024-03-06 14:36:10 +00:00
fs fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super 2024-03-06 14:36:10 +00:00
include fs/aio: Restrict kiocb_set_cancel_fn() to I/O submitted via libaio 2024-03-01 13:13:38 +01:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:34:30 -08:00
ipc
kernel sched/rt: Disallow writing invalid values to sched_rt_period_us 2024-03-01 13:13:33 +01:00
lib ida: Fix crash in ida_free when the bitmap is empty 2024-01-25 14:34:21 -08:00
LICENSES
mm userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb 2024-03-01 13:13:33 +01:00
net wifi: nl80211: reject iftype change with mesh ID change 2024-03-06 14:36:09 +00:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-07-27 08:37:07 +02:00
scripts scripts/bpf: Fix xdp_md forward declaration typo 2024-03-01 13:13:38 +01:00
security lsm: new security_file_ioctl_compat() hook 2024-02-23 08:25:15 +01:00
sound ALSA: Drop leftover snd-rtctimer stuff from Makefile 2024-03-06 14:36:09 +00:00
tools selftests/bpf: Avoid running unprivileged tests with alignment requirements 2024-03-01 13:13:35 +01:00
usr
virt KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler 2024-03-01 13:13:32 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-30 16:27:12 +02:00
Makefile Linux 5.4.270 2024-03-01 13:13:38 +01:00
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.