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Huang Chenming 33b2230edd wifi: cfg80211: Fix use_for flag update on BSS refresh [ Upstream commit `4073ea5161` ] Userspace may fail to connect to certain BSS that were initially marked as unusable due to regulatory restrictions (use_for = 0, e.g., 6 GHz power type mismatch). Even after these restrictions are removed and the BSS becomes usable, connection attempts still fail. The issue occurs in cfg80211_update_known_bss() where the use_for flag is updated using bitwise AND (&=) instead of direct assignment. Once a BSS is marked with use_for = 0, the AND operation masks out any subsequent non-zero values, permanently keeping the flag at 0. This causes __cfg80211_get_bss(), invoked by nl80211_assoc_bss(), to fail the check "(bss->pub.use_for & use_for) != use_for", thereby blocking association. Replace the bitwise AND operation with direct assignment so the use_for flag accurately reflects the current BSS state. Fixes: `d02a12b8e4` ("wifi: cfg80211: add BSS usage reporting") Signed-off-by: Huang Chenming <chenming.huang@oss.qualcomm.com> Link: https://patch.msgid.link/20251209025733.2098456-1-chenming.huang@oss.qualcomm.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2026-03-04 07:19:58 -05:00
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README

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 reStructuredText 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.