request_firmware() gives build failures

[Jonathan Corbet <corbet@xxxxxxx>]

Just tried building -rc2 (then current git) and got a few errors like:

  drivers/built-in.o: In function `generic_set_freq':
  tuner-xc2028.c:(.text+0x90f42): undefined reference to `request_firmware'
  tuner-xc2028.c:(.text+0x91418): undefined reference to `release_firmware'

A bit of digging turned up the problem: I had fw_loader configured as a
module, but some drivers which need it were configured built-in.  Don't
ask why I had those drivers configured in at all...time to prune that
.config I've been carrying around...

In any case, setting CONFIG_FW_LOADER=y makes the problem go away.  I'm
not good enough at kconfig to make that happen magically; putting in
"select FW_LOADER" doesn't seem to be enough.  In any case, given that
callers to request_firmware() can be built in, does it make sense to
have an option to make the firmware loader modular?

jon

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