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[ Upstream commit9e7e6cabf3] Fixes gcc '-Wunused-but-set-variable' warning: drivers/net/net_failover.c: In function 'net_failover_slave_unregister': drivers/net/net_failover.c:598:35: warning: variable 'primary_dev' set but not used [-Wunused-but-set-variable] There should check the validity of 'slave_dev'. Fixes:cfc80d9a11("net: Introduce net_failover driver") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> 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.
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.