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[ Upstream commit 4ecf56f4b66011b583644bf9a62188d05dfcd78c ] The MSE102x doesn't provide any interrupt register, so the only way to handle the level interrupt is to fetch the whole packet from the MSE102x internal buffer via SPI. So in cases the interrupt handler fails to do this, it should return IRQ_NONE. This allows the core to disable the interrupt in case the issue persists and prevent an interrupt storm. Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Link: https://patch.msgid.link/20250509120435.43646-6-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.