Re: [tools headers UAPI] e2bcbd7769: kernel-selftests.ir.make_fail

[Shuah Khan]

On 1/28/22 9:49 AM, Alexei Starovoitov wrote:
> On Fri, Jan 28, 2022 at 1:32 AM Sean Young <sean@xxxxxxxx> wrote:
> >

> > > ir_loopback.c: In function ‘main’:
> > > ir_loopback.c:147:20: error: ‘RC_PROTO_RCMM32’ undeclared (first use in this function); did you mean ‘RC_PROTO_RC6_MCE’?
> > >      if (rc_proto == RC_PROTO_RCMM32 &&
> > >                      ^~~~~~~~~~~~~~~
> > >                      RC_PROTO_RC6_MCE
> >
> > So this commit removes the copy of lirc.h from tools/include/uapi/linux/lirc.h,
> > so now the test uses /usr/include/linux/lirc.h. It appears that this file
> > does not have RC_PROTO_RCMM32 defined on this system, which means it is a
> > kernel header from v5.1 or earlier (this was added in commit
> > 721074b03411327e7bf41555d4cc7c18f49313f7).
> >
> > It looks like this machine is redhat 8.3, which ships with kernel 4.18.
> >
> > I guess my change was far too optimistic; I had no ideal enterprise kernels
> > were so ancient.
> >
> > We should probably drop e2bcbd7769ee8f05e1b3d10848aace98973844e4. Sorry about
> > the turbulence.
>
> I'd rather avoid reverting.
> Just add ifdef or something to shut up the error on old distros.

Sean,

Let's not add release checks.

Since RC_PROTO_RCMM32 is the only one missing, perhaps you could define
just that one in ir_loopback.c with a comment that it can be removed.

ifndef RC_PROTO_RCMM32 ---

thanks,
-- Shuah