The keyring and auth functions can be called from both the host and the target side and are controlled by Kconfig options for each of the combinations, but the declarations are controlled by #ifdef checks on the shared Kconfig symbols. This leads to link failures in combinations where one of the frontends is built-in and the other one is a module, and the keyring code ends up in a module that is not reachable from the builtin code: ld: drivers/nvme/host/core.o: in function `nvme_core_exit': core.c:(.exit.text+0x4): undefined reference to `nvme_keyring_exit' ld: drivers/nvme/host/core.o: in function `nvme_core_init': core.c:(.init.text+0x94): undefined reference to `nvme_keyring_init ld: drivers/nvme/host/tcp.o: in function `nvme_tcp_setup_ctrl': tcp.c:(.text+0x4c18): undefined reference to `nvme_tls_psk_default' Address this by moving nvme_keyring_init()/nvme_keyring_exit() into module init/exit functions for the keyring module. Fixes: be8e82caa6859 ("nvme-tcp: enable TLS handshake upcall") Signed-off-by: Hannes Reinecke <hare@suse.de> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@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.
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