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[ Upstream commitd9f564c966] dmc620_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path. Similar to the handling of arm_ccn_init() in commit26242b3300("bus: arm-ccn: Prevent hotplug callback leak") Fixes:53c218da22("driver/perf: Add PMU driver for the ARM DMC-620 memory controller") Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com> Reviewed-by: Punit Agrawal <punit.agrawal@bytedance.com> Link: https://lore.kernel.org/r/20221115115540.6245-2-shangxiaojing@huawei.com Signed-off-by: Will Deacon <will@kernel.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.