ipc/sem: remove redundant assignments

Get rid of redundant assignments which end up in values not being
read either because they are overwritten or the function ends.

Reported by clang-tidy [deadcode.DeadStores]

Link: https://lkml.kernel.org/r/20220409101933.207157-1-michalorzel.eng@gmail.com
Signed-off-by: Michal Orzel <michalorzel.eng@gmail.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/ipc/sem.c b/ipc/sem.c
index 0dbdb98..38ef91a 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -766,7 +766,6 @@ static int perform_atomic_semop(struct sem_array *sma, struct sem_queue *q)
        for (sop = sops; sop < sops + nsops; sop++) {
                curr = &sma->sems[sop->sem_num];
                sem_op = sop->sem_op;
-               result = curr->semval;
 
                if (sop->sem_flg & SEM_UNDO) {
                        int undo = un->semadj[sop->sem_num] - sem_op;
@@ -1430,7 +1429,6 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
        if (err)
                goto out_rcu_wakeup;
 
-       err = -EACCES;
        switch (cmd) {
        case GETALL:
        {