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copy_from_user_inatomic() is actually a local function that returns -EFAULT or positive values on error. Otherwise copy_from_user() returns the number of bytes remaining to be copied. We want to return -EFAULT here. I removed an unlikely() because we just did a copy_from_user() so I don't think it can possibly make a difference. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rob Clark <robdclark@gmail.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.