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[ Upstream commit 487767bff572d46f7c37ad846c4078f6d6c9cc55 ] Fix Smatch-detected error: drivers/md/dm-zoned-target.c:1073 dmz_iterate_devices() error: uninitialized symbol 'r'. Smatch detects a possible use of the uninitialized variable 'r' in dmz_iterate_devices() because if dmz->nr_ddevs is zero, the loop is skipped and 'r' is returned without being set, leading to undefined behavior. Initialize 'r' to 0 before the loop. This ensures that if there are no devices to iterate over, the function still returns a defined value. Signed-off-by: Purva Yeshi <purvayeshi550@gmail.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.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.
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.