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[ Upstream commit1c2b1049af] devm_kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Ensure the allocation was successful by checking the pointer validity. Release the id allocated in 'mmdc_pmu_init' when 'devm_kasprintf' return NULL Suggested-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Fixes:e76bdfd740("ARM: imx: Added perf functionality to mmdc driver") Signed-off-by: Kunwu Chan <chentao@kylinos.cn> Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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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.
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