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[ Upstream commit2e2fe5ac69] Smatch complains that: tw_probe() warn: missing error code 'retval' This patch adds error checking to tw_probe() to handle initialization failure. If tw_reset_sequence() function returns a non-zero value, the function will return -EINVAL to indicate initialization failure. Fixes:1da177e4c3("Linux-2.6.12-rc2") Signed-off-by: Yuchen Yang <u202114568@hust.edu.cn> Link: https://lore.kernel.org/r/20230505141259.7730-1-u202114568@hust.edu.cn Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.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.