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Felix Fietkau edf45a6228 wifi: mt76: mt7921: fix deadlock in mt7921_abort_roc
[ Upstream commit de19b9c836 ]

When mt7921_abort_roc is called with dev->mutex held, it can deadlock while
calling cancel_work_sync(&phy->roc_work), because the work function could
be waiting to acquire the mutex.

Fix this by flushing the work before taking the mutex

Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Fixes: 034ae28b56 ("wifi: mt76: mt7921: introduce remain_on_channel support")
Fixes: 41ac53c899 ("wifi: mt76: mt7921: introduce chanctx support")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-10 09:28:13 +01:00
2023-03-10 09:28:11 +01:00
2022-12-30 17:22:14 +09:00
2022-09-28 09:02:20 +02:00
2023-02-02 11:35:33 -08:00
2023-03-03 11:56:18 +01:00

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.
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