linux-next: build failure in Linus' tree

From: Stephen Rothwell
Date: Wed Jul 14 2021 - 19:50:48 EST


Hi all,

While compiling Linus' tree, a powerpc-allmodconfig build (and others)
with gcc 4.9 failed like this:

drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c: In function 'ifh_encode_bitfield':
include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_431' declared with attribute error: Unsupported width, must be <= 40
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c:28:2: note: in expansion of macro 'compiletime_assert'
compiletime_assert(width <= 40, "Unsupported width, must be <= 40");
^

Caused by commit

f3cad2611a77 ("net: sparx5: add hostmode with phylink support")

I guess this is caused by the call to ifh_encode_bitfield() not being
inlined.



--
Cheers,
Stephen Rothwell

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