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If the driver fails to properly prepare for the channel switch, mac80211 will disconnect. If the CSA IE had mode set to 1, it means that the clients are not allowed to send any Tx on the current channel, and that includes the deauthentication frame. Make sure that we don't send the deauthentication frame in this case. In iwlwifi, this caused a failure to flush queues since the firmware already closed the queues after having parsed the CSA IE. Then mac80211 would wait until the deauthentication frame would go out (drv_flush(drop=false)) and that would never happen. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> 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.
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.