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[ Upstream commitb59bd3527f] Currently init_imc_pmu() can fail either because we try to register an IMC unit with an invalid domain (i.e an IMC node not supported by the kernel) or something went wrong while registering a valid IMC unit. In both the cases kernel provides a 'Register failed' error message. For example when trace-imc node is not supported by the kernel, but skiboot advertises a trace-imc node we print: IMC Unknown Device type IMC PMU (null) Register failed To avoid confusion just print the unknown device type message, before attempting PMU registration, so the second message isn't printed. Fixes:8f95faaac5("powerpc/powernv: Detect and create IMC device") Reported-by: Pavaman Subramaniyam <pavsubra@in.ibm.com> Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com> Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> [mpe: Reword change log a bit] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.