e73a5e8e80
scsi_host_find_tag() is used by the drivers to return a scsi command based on the command tag. Typically it's used from the interrupt handler to fetch the command associated with a value returned from hardware. Some drivers like fnic or qla4xxx, however, also use it also to traverse outstanding commands. With the current implementation scsi_host_find_tag() will return commands even if they are not started (i.e. passed to the driver). This will result in random errors with those drivers. With this patch scsi_host_find_tag() will only return 'started' commands (i.e. commands which have been passed to the drivers) thus avoiding the above issue. The other use cases will be unaffected as the interrupt handler naturally will only ever return 'started' requests. Link: https://lore.kernel.org/r/20200622063022.67891-1-hare@suse.de Signed-off-by: Hannes Reinecke <hare@suse.de> 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.