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commit5ab25a32cdupstream. Discovery controllers usually don't support smart log page command. So when we connect to the discovery controller we see this warning: nvme nvme0: Failed to read smart log (error 24577) nvme nvme0: new ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery", addr 192.168.123.1:8009 nvme nvme0: Removing ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery" Introduce a new helper to understand if the controller is a discovery controller and use this helper to skip nvme_init_hwmon (also use it in other places that we check if the controller is a discovery controller). Fixes:400b6a7b13("nvme: Add hardware monitoring support") Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.