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Filename Latest commit message Latest commit date
Sreekanth Reddy c473b3e56c scsi: mpt3sas: Fix timeouts observed while reenabling IRQ
[ Upstream commit 5feed64f9199ff90c4239971733f23f30aeb2484 ]

While reenabling the IRQ after irq poll there may be small time window
where HBA firmware has posted some replies and raise the interrupts but
driver has not received the interrupts. So we may observe I/O timeouts as
the driver has not processed the replies as interrupts got missed while
reenabling the IRQ.

To fix this issue the driver has to go for one more round of processing the
reply descriptors from reply descriptor post queue after enabling the IRQ.

Link: https://lore.kernel.org/r/20201102072746.27410-1-sreekanth.reddy@broadcom.com
Reported-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-18 19:20:23 +01:00
arch KVM: x86: don't expose MSR_IA32_UMWAIT_CONTROL unconditionally 2020-11-18 19:20:21 +01:00
block blk-cgroup: Pre-allocate tree node on blkg_conf_prep 2020-11-10 12:37:30 +01:00
certs
crypto
Documentation can: j1939: swap addr and pgn in the send example 2020-11-18 19:20:19 +01:00
drivers scsi: mpt3sas: Fix timeouts observed while reenabling IRQ 2020-11-18 19:20:23 +01:00
fs gfs2: check for live vs. read-only file system in gfs2_fitrim 2020-11-18 19:20:22 +01:00
include KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED 2020-11-18 19:20:21 +01:00
init printk: reduce LOG_BUF_SHIFT range for H8300 2020-11-05 11:43:16 +01:00
ipc
kernel tracing: Fix the checking of stackidx in __ftrace_trace_stack 2020-11-18 19:20:23 +01:00
lib random32: make prandom_u32() output unpredictable 2020-11-18 19:20:20 +01:00
LICENSES
mm mm: mempolicy: fix potential pte_unmap_unlock pte error 2020-11-10 12:37:27 +01:00
net cfg80211: regulatory: Fix inconsistent format argument 2020-11-18 19:20:23 +01:00
samples samples/bpf: Fix possible deadlock in xdpsock 2020-11-05 11:43:17 +01:00
scripts
security
sound ALSA: hda: Reinstate runtime_allow() for all hda controllers 2020-11-18 19:20:22 +01:00
tools selftests: pidfd: fix compilation errors due to wait.h 2020-11-18 19:20:22 +01:00
usr
virt KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED 2020-11-18 19:20:21 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.77 2020-11-10 21:13:20 +01:00
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.