[PATCH 9/10] udlfb: explicit dependencies and warnings

Greg KH greg at kroah.com
Thu Feb 18 16:01:17 UTC 2010

On Mon, Feb 15, 2010 at 06:46:35AM -0800, Bernie Thompson wrote:
> Specify Kconfig dependencies, and include warnings for building as a module
> udlfb is dependent on FB_DEFERRED_IO, FB_SYS_*, and FB_MODE_HELPERS
> Because many kernels do not include defio (which cannot be built
> as a module), yet users want to be able to build udlfb as a module later,
> udlfb has ifdefs and these dependency warnings to help udlfb build with or
> without certain dependencies, but also print warnings for any lost function.
> Even though this kind of flexibility isn't common, we've gotten feedback
> from a significant portion of users that they were frustrated without it.

This patch adds the warning to the build:
	drivers/staging/udlfb/udlfb.c:65:2: warning: #warning message "FB_SYS_* in kernel or module option to support fb console"

Any ideas?


greg k-h

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