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96d7cb932e
floppy_check_events() is supposed to return bit flags to say which events occured. We should return zero to say that no event flags are set. Only BIT(0) and BIT(1) are used in the caller. And .check_events interface also expect to return an unsigned int value. However, after commita0c80efe59, it may return -EINTR (-4u). Here, both BIT(0) and BIT(1) are cleared. So this patch shouldn't affect runtime, but it obviously is still worth fixing. Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes:a0c80efe59("floppy: fix lock_fdc() signal handling") Signed-off-by: Yufen Yu <yuyufen@huawei.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.