77dd7d7b34
The expression start_idx - dbg_cnt is evaluated using unsigned int arthithmetic (since these variables are unsigned ints) and hence can never be less than zero, so the less than comparison is never true. Rewrite the expression to check for start_idx being less than dbg_cnt. After the logic was corrected, temp_idx wasn't working correctly. So fix it as well. Link: https://lore.kernel.org/r/20200706204246.130416-1-jsmart2021@gmail.com Fixes: 372c187b8a70 ("scsi: lpfc: Add an internal trace log buffer") CC: Colin Ian King <colin.king@canonical.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Addresses-Coverity: ("Unsigned compared against 0")
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.