firmware: generalize reading file contents as a helper
We'll want to reuse this same code later in order to read
two separate types of file contents. This generalizes
fw_read_file_contents() for reading a file and rebrands it
as fw_read_file(). This new caller is now generic: the path
used can be arbitrary and the caller is also agnostic to the
firmware_class code now, this begs the possibility of code
re-use with other similar callers in the kernel. For instance
in the future we may want to share a solution with:
- firmware_class: fw_read_file()
- module: kernel_read()
- kexec: copy_file_fd()
While at it this also cleans up the exit paths on fw_read_file().
Reviewed-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
1 file changed
