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[ Upstream commit 02a940da2ccc0cc0299811379580852b405a0ea2 ] [WHY] If max_downscale_src_width check fails, we exit early from TAP calculation and left a NULL value to the scaling data structure to cause the zero divide in the DML validation. [HOW] Call set default TAP calculation before early exit in get_optimal_number_of_taps due to max downscale limit exceed. Reviewed-by: Samson Tam <samson.tam@amd.com> Signed-off-by: Yihan Zhu <Yihan.Zhu@amd.com> Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 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.