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Nicolas Dufresne add7da91cc media: verisilicon: Fix CPU stalls on G2 bus error 
commit 19c286b755 upstream.

In some seek stress tests, we are getting IRQ from the G2 decoder where
the dec_bus_int and the dec_e bits are high, meaning the decoder is
still running despite the error.

Fix this by reworking the IRQ handler to only finish the job once we
have reached completion and move the software reset to when our software
watchdog triggers.

This way, we let the hardware continue on errors when it did not self
reset and in worse case scenario the hardware timeout will
automatically stop it. The actual error will be fixed in a follow up
patch.

Fixes: 3385c514ec ("media: hantro: Convert imx8m_vpu_g2_irq to helper")
Cc: stable@vger.kernel.org
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-01-08 10:14:42 +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 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.