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During heavy I/O testing with issue_lip to bounce the link, occasionally I/O is terminated with status 3 result 9, which means the RPI is suspended. The I/O is completed and this type of error will result in immediate retry by the SCSI layer. The retry count expires and the I/O fails and returns error to the application. To avoid these quick retry/retries exhausted scenarios change the return code given to the midlayer to DID_REQUEUE rather than DID_ERROR. This gets them retried, and eventually succeed when the link recovers. Link: https://lore.kernel.org/r/20211204002644.116455-3-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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.