sparc: mark __arch_xchg() as __always_inline

An otherwise correct change to the atomic operations uncovered an
existing bug in the sparc __arch_xchg() function, which is calls
__xchg_called_with_bad_pointer() when its arguments are unknown at
compile time:

ERROR: modpost: "__xchg_called_with_bad_pointer" [lib/atomic64_test.ko] undefined!

This now happens because gcc determines that it's better to not inline the
function. Avoid this by just marking the function as __always_inline
to force the compiler to do the right thing here.

Reported-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/all/[email protected]/
Fixes: d12157efc8e08 ("locking/atomic: make atomic*_{cmp,}xchg optional")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Palmer Dabbelt <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Sam Ravnborg <[email protected]>
Acked-by: Guenter Roeck <[email protected]>
Acked-by: Andi Shyti <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kees Cook <[email protected]>

0 files changed, 0 insertions, 0 deletions