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177577dbd2
When inserting a link STA, make sure it doesn't exist first and add lockdep assertions that we cannot modify the hash table without holding the sta_mtx, so this check is really correct. Also return without hashing if the driver failed, and warn if the hashing fails, which shouldn't happen due to the check described above. Fixes:cb71f1d136("wifi: mac80211: add sta link addition/removal") Fixes:ba6ddab94f("wifi: mac80211: maintain link-sta hash table") Signed-off-by: Johannes Berg <johannes.berg@intel.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.