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Kornel Dulęba 6841d9bdf4 pinctrl: amd: Detect and mask spurious interrupts 
commit 0cf9e48ff2 upstream.

Leverage gpiochip_line_is_irq to check whether a pin has an irq
associated with it. The previous check ("irq == 0") didn't make much
sense. The irq variable refers to the pinctrl irq, and has nothing do to
with an individual pin.

On some systems, during suspend/resume cycle, the firmware leaves
an interrupt enabled on a pin that is not used by the kernel.
Without this patch that caused an interrupt storm.

Cc: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217315
Signed-off-by: Kornel Dulęba <korneld@chromium.org>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20230421120625.3366-4-mario.limonciello@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-07-23 13:53:51 +02:00
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README

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.