While the endiannes is being handled correctly as indicated by the comment above the offending line - sparse was unhappy with the missing annotation as be64_to_cpu() expects a __be64 argument. To mitigate this annotation issue forced annotation is introduced. Note that this patch has no impact on the generated binary. Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx> --- Problem located by an experimental coccinelle script to locate patters that make sparse unhappy (false positives): net/rds/ib_recv.c:827:23: warning: cast to restricted __le64 Patch was compile-tested with: x86_64_defconfig + RDS_RDMA=m Patch was verified not to change the binary by diffing the generated object code before and after applying the patch. Patch is against 5.1-rc6 (localversion-next is 20190426) net/rds/ib_recv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index 7055985..a070a2d 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -824,7 +824,7 @@ static void rds_ib_cong_recv(struct rds_connection *conn, } /* the congestion map is in little endian order */ - uncongested = le64_to_cpu(uncongested); + uncongested = le64_to_cpu((__force __le64)uncongested); rds_cong_map_updated(map, uncongested); } -- 2.1.4
