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Jiaxun Yang 8694853768 irqchip/mips-gic: Use raw spinlock for gic_lock 
commit 3d6a0e4197 upstream.

Since we may hold gic_lock in hardirq context, use raw spinlock
makes more sense given that it is for low-level interrupt handling
routine and the critical section is small.

Fixes BUG:

[    0.426106] =============================
[    0.426257] [ BUG: Invalid wait context ]
[    0.426422] 6.3.0-rc7-next-20230421-dirty #54 Not tainted
[    0.426638] -----------------------------
[    0.426766] swapper/0/1 is trying to lock:
[    0.426954] ffffffff8104e7b8 (gic_lock){....}-{3:3}, at: gic_set_type+0x30/08

Fixes: 95150ae8b3 ("irqchip: mips-gic: Implement irq_set_type callback")
Cc: stable@vger.kernel.org
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230424103156.66753-3-jiaxun.yang@flygoat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-05-30 14:03:20 +01:00
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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 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.