[PATCH] nios2: ksyms: Declare __mulsi3 export

[Thomas Weißschuh]

GCC may emit libcalls to __mulsi3(). As modpost is not aware that this
function is provided through the linked in libgcc, it fails:

ERROR: modpost: kernel/locking/test-ww_mutex.ko: symbol '__mulsi3' undefined!
ERROR: modpost: kernel/time/test_udelay.ko: symbol '__mulsi3' undefined!
ERROR: modpost: kernel/resource_kunit.ko: symbol '__mulsi3' undefined!
ERROR: modpost: fs/fuse/virtiofs.ko: symbol '__mulsi3' undefined!
etc.

Make sure modpost can see the symbol from libgcc.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202610171933.J4bFOfL8-lkp@xxxxxxxxx/
Fixes: 2fc8483fdcde ("nios2: Build infrastructure")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
---
 arch/nios2/kernel/nios2_ksyms.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/nios2/kernel/nios2_ksyms.c b/arch/nios2/kernel/nios2_ksyms.c
index c40aa39e8658..e8710a269b39 100644
--- a/arch/nios2/kernel/nios2_ksyms.c
+++ b/arch/nios2/kernel/nios2_ksyms.c
@@ -38,6 +38,7 @@ DECLARE_EXPORT(__udivsi3);
 DECLARE_EXPORT(__umoddi3);
 DECLARE_EXPORT(__umodsi3);
 DECLARE_EXPORT(__muldi3);
+DECLARE_EXPORT(__mulsi3);
 DECLARE_EXPORT(__ucmpdi2);
 DECLARE_EXPORT(__lshrdi3);
 DECLARE_EXPORT(__ashldi3);

---
base-commit: c03c1a14507dfaf8b856c2608f9ac216021fc222
change-id: 20261019-nios2-mulsi3-13394f57e37b

Best regards,
--  
Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>