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commit1d5de5bd31upstream. Commita83da8a450("scsi: sd: Optimal I/O size should be a multiple of physical block size") split one conditional into several separate statements in an effort to provide more accurate warning messages when a device reports a nonsensical value. However, this reorganization accidentally dropped the precondition of the reported value being larger than zero. This lead to a warning getting emitted on devices that do not report an optimal I/O size at all. Remain silent if a device does not report an optimal I/O size. Fixes:a83da8a450("scsi: sd: Optimal I/O size should be a multiple of physical block size") Cc: Randy Dunlap <rdunlap@infradead.org> Cc: <stable@vger.kernel.org> Reported-by: Hussam Al-Tayeb <ht990332@gmx.com> Tested-by: Hussam Al-Tayeb <ht990332@gmx.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.