Re: ioctl cleanups: enable sg_io and serial stuff to be shared

[Christoph Hellwig <hch@infradead.org>]

On Thu, May 08, 2003 at 11:16:43AM -0400, Ben Collins wrote:
> How would the driver differentiate between .compat_ioctl == NULL being a
> case where it should fail because there is no translation, or a case
> where it should use the compatible .ioctl? Maybe there should be an
> extra flag like use_compat_ioctl. So:

.compat_ioctl == NULL:  fail
.compat_ioctl == .ioctl: everythings fine, I read the docs

> This would also solve the current problem where a module that is
> compiled with compat ioctl's using register_ioctl32_conversion() is not
> usable on a kernel compiled without CONFIG_COMPAT, even though it very
> well should be.

You mean you want to load the same binary module in differently
compiled kernels?  That's a flawed idea to start with..