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Biju Das c73da6b9eb irqchip/renesas-rzg2l: Flush posted write in irq_eoi() 
[ Upstream commit 9eec61df55 ]

The irq_eoi() callback of the RZ/G2L interrupt chip clears the relevant
interrupt cause bit in the TSCR register by writing to it.

This write is not sufficient because the write is posted and therefore not
guaranteed to immediately clear the bit. Due to that delay the CPU can
raise the just handled interrupt again.

Prevent this by reading the register back which causes the posted write to
be flushed to the hardware before the read completes.

Fixes: 3fed09559c ("irqchip: Add RZ/G2L IA55 Interrupt Controller driver")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-03 15:32:34 +02:00
arch ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses 2024-04-03 15:32:33 +02:00
block Revert "block/mq-deadline: use correct way to throttling write requests" 2024-04-03 15:32:22 +02:00
certs
crypto Revert "crypto: pkcs7 - remove sha1 support" 2024-04-03 15:32:31 +02:00
Documentation x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT 2024-04-03 15:32:32 +02:00
drivers irqchip/renesas-rzg2l: Flush posted write in irq_eoi() 2024-04-03 15:32:34 +02:00
fs btrfs: qgroup: validate btrfs_qgroup_inherit parameter 2024-04-03 15:32:30 +02:00
include Revert "crypto: pkcs7 - remove sha1 support" 2024-04-03 15:32:31 +02:00
init modules: wait do_free_init correctly 2024-03-26 18:17:17 -04:00
io_uring io_uring/waitid: always remove waitid entry for cancel all 2024-04-03 15:32:24 +02:00
ipc
kernel printk: Update @console_may_schedule in console_trylock_spinning() 2024-04-03 15:32:33 +02:00
lib pci_iounmap(): Fix MMIO mapping leak 2024-04-03 15:32:02 +02:00
LICENSES
mm memtest: use {READ,WRITE}_ONCE in memory scanning 2024-04-03 15:32:22 +02:00
net netfilter: nf_tables: reject constant set with timeout 2024-04-03 15:32:31 +02:00
rust
samples work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
scripts kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1 2024-04-03 15:32:18 +02:00
security lsm: handle the NULL buffer case in lsm_fill_user_ctx() 2024-04-03 15:32:22 +02:00
sound ASoC: amd: yc: Revert "add new YC platform variant (0x63) support" 2024-04-03 15:32:32 +02:00
tools wireguard: selftests: set RISCV_ISA_FALLBACK on riscv{32,64} 2024-04-03 15:32:26 +02:00
usr
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-03 15:32:03 +02:00
.clang-format
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: supplement of zswap maintainers update 2024-01-25 23:52:21 -08:00
Kbuild
Kconfig
MAINTAINERS drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
Makefile Linux 6.8.2 2024-03-26 18:23:34 -04:00
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.