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[ Upstream commitb557a5f8da] There is no need to free a NULL value. Instead, free the object that is leaking due to the iterator. The semantic patch that finds this problem is as follows: // <smpl> @@ expression x,e; identifier f; @@ x = f(...); if (x == NULL) { ... when any when != x = e * of_node_put(x); ... } // </smpl> Fixes:6529007522("drm: of: Add drm_of_lvds_get_dual_link_pixel_order") Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210709200717.3676376-1-Julia.Lawall@inria.fr 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.