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[ Upstream commit58e92c4a49] In case of error, the function memremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes:5a3fa75a4d("nvmem: Add driver to expose reserved memory as nvmem") Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20221118063840.6357-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.