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[ Upstream commit32b5a2c995] Commit715a123347("wireless: don't write C files on failures") drops the `test -f $$f` check. The list of targets contains the CONFIG_CFG80211_EXTRA_REGDB_KEYDIR directory itself, and this check used to filter it out. After the check was removed, the extra keydir option no longer works, failing with the following message: od: 'standard input': read error: Is a directory This commit restores the check to make extra keydir work again. Fixes:715a123347("wireless: don't write C files on failures") Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> 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.