[PATCH] modpost: Fix section warnings for ARM for many compilers

[Russell King - ARM Linux]

On Mon, Feb 13, 2012 at 11:26:52PM +0100, Uwe Kleine-König wrote:
> On Mon, Feb 13, 2012 at 01:24:01PM -0800, Tony Lindgren wrote:
> > It turns out that many compilers don't show section warnings on ARM
> > currently because handling for ARM_CALL relocs are missing from
> > modpost.c.
> > 
> > Based on commit c2e26114 ([ARM] 3205/1: Handle new EABI relocations when
> > loading kernel modules) it seems that R_ARM_PC24, R_ARM_CALL and
> > R_ARM_JUMP24 can be handled the same way.
> > 
> > As modpost.c includes elf.h, we need to also consider that at least
> > Debian libc6-dev is missing defines for both R_ARM_CALL and R_ARM_JUMP24
> > in /usr/include/elf.h.
> Huh, even unstable's /usr/include/elf.h doesn't have these symbols.
> 
> > So for now let's just use the numbers in modpost.c.
> > 
> > Cc: Rusty Russell <rusty at rustcorp.com.au>
> > Cc: Ben Hutchings <ben at decadent.org.uk>
> > Cc: Anders Kaseorg <andersk at ksplice.com>
> > Cc: Greg KH <gregkh at linuxfoundation.org>
> > Cc: Russell King <rmk+kernel at arm.linux.org.uk>
> > Signed-off-by: Tony Lindgren <tony at atomide.com>
> > 
> > ---
> > 
> > Anybody got better ideas for dealing with the missing elf.h
> > defines?
> Maybe:
> 
> #ifndef R_ARM_CALL
> #warning "you're elf.h include is outdated"

"You are elf.h include is outdated" does not make sense.

Why are you calling Tony an elf.h include?