In kernel, need use div64_u64_rem() instead of operator '%' for u64, or
can not pass compiling (with allmodconfig under metag):
MODPOST 2909 modules
ERROR: "__umoddi3" [drivers/target/target_core_mod.ko] undefined!
Also need u64 type cast for u32 variable multiply u32 variable, or will
cause type overflow issue.
Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
---
drivers/target/target_core_alua.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index dc0d399..ff2aadc 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -489,7 +489,8 @@ static inline int core_alua_state_lba_dependent(
u64 first_lba = map->lba_map_first_lba;
if (segment_mult) {
- start_lba = lba % (segment_size * segment_mult);
+ u64 tmp = (u64)segment_size * segment_mult;
+ div64_u64_rem(lba, tmp, &start_lba);
last_lba = first_lba + segment_size - 1;
if (start_lba >= first_lba &&
start_lba <= last_lba) {
--
1.7.11.7
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