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Anand Lodnoor 56ee0c5856 scsi: megaraid_sas: Limit the number of retries for the IOCTLs causing firmware fault
IOCTLs causing firmware fault may end up in failed controller resets and
finally killing the adapter.

This patch fixes this problem as stated below:

In OCR sequence, driver will attempt refiring pended IOCTLs upto two times.
If first two attempts fail, then in third attempt driver will return pended
IOCTLs with EBUSY status to application. These changes are done to ensure
if any of pended IOCTLs is causing firmware fault and resulting into OCR
failure, then in last attempt of OCR driver will refrain firing it to
firmware and saving adapter from being killed due to faulty IOCTL.

Link: https://lore.kernel.org/r/1579000882-20246-10-git-send-email-anand.lodnoor@broadcom.com
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Anand Lodnoor <anand.lodnoor@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-01-15 23:21:03 -05:00
arch compat_ioctl: ubd, aoe: use blkdev_compat_ptr_ioctl 2020-01-03 09:33:02 +01:00
block compat_ioctl: simplify up block/ioctl.c 2020-01-03 09:42:52 +01:00
certs
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Documentation Documentation: document ioctl interfaces better 2020-01-03 09:42:52 +01:00
drivers scsi: megaraid_sas: Limit the number of retries for the IOCTLs causing firmware fault 2020-01-15 23:21:03 -05:00
fs compat_ioctl: simplify the implementation 2020-01-03 09:42:52 +01:00
include scsi: drivers: base: Propagate errors through the transport component 2020-01-15 22:55:37 -05:00
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kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-12-22 09:54:33 -08:00
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MAINTAINERS A set of fixes for the v5.5 series: 2019-12-27 11:02:48 -08:00
Makefile Linux 5.5-rc4 2019-12-29 15:29:16 -08:00
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.