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Subject[PATCH] powerpc: fix build failure by disabling attribute-alias warning in pci_32
Commit 2479bfc9bc600 ("powerpc: Fix build by disabling attribute-alias
warning for SYSCALL_DEFINEx") forgot arch/powerpc/kernel/pci_32.c

Latest GCC version emit the following warnings

As arch/powerpc code is built with -Werror, this breaks build with
GCC 8.1

This patch inhibits this warning

In file included from arch/powerpc/kernel/pci_32.c:14:
./include/linux/syscalls.h:233:18: error: 'sys_pciconfig_iobase' alias between functions of incompatible types 'long int(long int, long unsigned int, long unsigned int)' and 'long int(long int, long int, long int)' [-Werror=attribute-alias]
asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
./include/linux/syscalls.h:222:2: note: in expansion of macro '__SYSCALL_DEFINEx'
__SYSCALL_DEFINEx(x, sname, __VA_ARGS__)

Signed-off-by: Christophe Leroy <>
arch/powerpc/kernel/pci_32.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index d63b488d34d7..4f861055a852 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -285,6 +285,9 @@ pci_bus_to_hose(int bus)
* Note that the returned IO or memory base is a physical address

+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpragmas"
+#pragma GCC diagnostic ignored "-Wattribute-alias"
SYSCALL_DEFINE3(pciconfig_iobase, long, which,
unsigned long, bus, unsigned long, devfn)
@@ -310,3 +313,4 @@ SYSCALL_DEFINE3(pciconfig_iobase, long, which,

return result;
+#pragma GCC diagnostic pop
 \ /
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