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8e7dfe9c2a
commit81337b9a72upstream. chan->desc can be null, if transfer is terminated when resume is called, leading to a NULL pointer when retrieving the hwdesc. To avoid this case, check that chan->desc is not null and channel is disabled (transfer previously paused or terminated). Fixes:a4ffb13c89("dmaengine: Add STM32 MDMA driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20231004163531.2864160-1-amelie.delaunay@foss.st.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.