Re: Build regressions/improvements in v5.9-rc8

[Paul Bolle]

[Added Richard and Anton.]

Andy Shevchenko schreef op ma 05-10-2020 om 15:58 [+0300]:
> On Mon, Oct 05, 2020 at 11:35:33AM +0200, Geert Uytterhoeven wrote:
> > On Mon, Oct 5, 2020 at 11:33 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> > > JFYI, when comparing v5.9-rc8[1] to v5.9-rc7[3], the summaries are:
> > >   - build errors: +3/-6
> 
> Thanks for the report!
> 
> >   + /kisskb/src/drivers/gpio/gpiolib-cdev.c: error: implicit
> > declaration of function 'in_ia32_syscall'
> > [-Werror=implicit-function-declaration]:  => 430:6
> >   + /kisskb/src/drivers/gpio/gpiolib-cdev.c: error: unknown type name
> > 'compat_u64':  => 432:4
> > 
> > x86_64/um-all{mod,yes}config
> 
> I guess the quick fix is to disable that code for UML, I don't know how IOCTLs
> are working in UML in cases when host - guest - guest app either from:
> 	1. x86_64 - x86_64 - i386;
> 	2. x86_64 - i386 - i386.

I ran into this build error too.

Perhaps the UML maintainers have an idea what to do here. The commit that
triggers this error is 5ad284ab3a01 ("gpiolib: Fix line event handling in
syscall compatible mode").

Thanks,


Paul Bolle