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i2c: uniphier-f: make driver robust against concurrency
Masahiro Yamada authored 
This is unlikely to happen, but it is possible for a CPU to enter
the interrupt handler just after wait_for_completion_timeout() has
expired. If this happens, the hardware is accessed from multiple
contexts concurrently.

Disable the IRQ after wait_for_completion_timeout(), and do nothing
from the handler when the IRQ is disabled.

Fixes: 6a62974b

 ("i2c: uniphier_f: add UniPhier FIFO-builtin I2C driver")
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
f1fdcbbd
Name Last commit Last update
Documentation Merge tag 'v4.19-rc7' into i2c/for-4.20
LICENSES LICENSES: Add Linux-OpenIB license text
arch Merge tag 'powerpc-4.19-4' of https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
block blk-mq: I/O and timer unplugs are inverted in blktrace
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()
crypto Merge tag 'dmaengine-4.19-rc1' of git://git.infradead.org/users/vkoul/slave-dma
drivers i2c: uniphier-f: make driver robust against concurrency
firmware kbuild: remove all dummy assignments to obj-
fs ocfs2: fix locking for res->tracking and dlm->tracking_list
include Merge tag 'char-misc-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
init Merge tag 'kbuild-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
lib lib/xz: Put CRC32_POLY_LE in xz_private.h
mm Merge branch 'akpm'
net ipv6: take rcu lock in rawv6_send_hdrinc()
samples samples/bpf: all XDP samples should unload xdp/bpf prog on SIGTERM
scripts Merge tag 'linux-kselftest-4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
security Revert "uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name"
sound ALSA: hda/realtek - Cannot adjust speaker's volume on Dell XPS 27 7760
tools Merge tag 'char-misc-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/
virt KVM: Remove obsolete kvm_unmap_hva notifier backend
.clang-format clang-format: Set IndentWrappedFunctionNames false
.cocciconfig scripts: add Linux .cocciconfig for coccinelle
.get_maintainer.ignore Add hch to .get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files
.gitignore Merge tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
.mailmap Merge tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm
COPYING COPYING: use the new text with points to the license files
CREDITS 9p: remove Ron Minnich from MAINTAINERS
Kbuild Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
MAINTAINERS Merge tag 'pci-v4.19-fixes-3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Makefile Linux 4.19-rc7
README Docs: Added a pointer to the formatted docs to 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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.