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Filename Latest commit message Latest commit date
Leilk.Liu 7dc48c447a i2c: mediatek: fix potential incorrect use of I2C_MASTER_WRRD
[ Upstream commit b492183652808e0f389272bf63dc836241b287ff ]

The old IC does not support the I2C_MASTER_WRRD (write-then-read)
function, but the current code’s handling of i2c->auto_restart may
potentially lead to entering the I2C_MASTER_WRRD software flow,
resulting in unexpected bugs.

Instead of repurposing the auto_restart flag, add a separate flag
to signal I2C_MASTER_WRRD operations.

Also fix handling of msgs. If the operation (i2c->op) is
I2C_MASTER_WRRD, then the msgs pointer is incremented by 2.
For all other operations, msgs is simply incremented by 1.

Fixes: b2ed11e224 ("I2C: mediatek: Add driver for MediaTek MT8173 I2C controller")
Signed-off-by: Leilk.Liu <leilk.liu@mediatek.com>
Suggested-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-29 13:59:46 +01:00
arch x86/vdso: Fix output operand size of RDPID 2025-10-29 13:59:46 +01:00
block block: use int to store blk_stack_limits() return value 2025-10-29 13:59:46 +01:00
certs
crypto
Documentation Documentation: ACPI: Fix parent device references 2025-08-28 16:21:23 +02:00
drivers i2c: mediatek: fix potential incorrect use of I2C_MASTER_WRRD 2025-10-29 13:59:46 +01:00
fs mm/hugetlb: fix folio is still mapped when deleted 2025-10-02 13:34:35 +02:00
include driver core/PM: Set power.no_callbacks along with power.no_pm 2025-10-29 13:59:46 +01:00
init
ipc
kernel cgroup: split cgroup_destroy_wq into 3 workqueues 2025-10-02 13:34:30 +02:00
lib lib: test_objagg: Set error message in check_expect_hints_stats() 2025-07-17 18:24:56 +02:00
LICENSES
mm mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() 2025-10-02 13:34:34 +02:00
net bpf: Explicitly check accesses to bpf_sock_addr 2025-10-29 13:59:46 +01:00
samples samples: mei: Fix building on musl libc 2025-08-28 16:21:19 +02:00
scripts randstruct: gcc-plugin: Fix attribute addition 2025-09-09 18:44:01 +02:00
security securityfs: don't pin dentries twice, once is enough... 2025-08-28 16:21:24 +02:00
sound ALSA: usb-audio: Fix build with CONFIG_INPUT=n 2025-10-02 13:34:33 +02:00
tools selftests: watchdog: skip ping loop if WDIOF_KEEPALIVEPING not supported 2025-10-29 13:59:46 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.300 2025-10-02 13:34:35 +02:00
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.