461ec04067
ata_eh_request_sense() returns early when flag ATA_QCFLAG_SENSE_VALID is set. However, since the call to ata_eh_request_sense() is guarded by a ATA_SENSE bit conditional, the logical conclusion for the reader is that all checks are performed at the call site. Highlight the fact that the sense data will not be fetched if flag ATA_QCFLAG_SENSE_VALID is already set by adding an additional check to the existing guarding conditional. No functional change. Additionally, add a comment explaining that ata_eh_analyze_tf() will only fetch the sense data if: -It was a non-NCQ command that failed, or -It was a NCQ command that failed, but the sense data was not included in the NCQ command error log (i.e. NCQ autosense is not supported). Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.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.