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Fix unused variable warning in icl_soft.c

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With clang 15, the following -Werror warning is produced:

    sys/dev/iscsi//icl_soft.c:886:6: error: variable 'coalesced' set but not used [-Werror,-Wunused-but-set-variable]
            int coalesced, error;
                ^

The 'coalesced' variable is eventually used only in an #if 0'd block,
obviously meant for debugging. Ensure that 'coalesced' is only declared
and used when DEBUG_COALESCED is defined, so the debugging can be easily
turned on later, if desired.

MFC after:	3 days

(cherry picked from commit f4f8470180)
This commit is contained in:
Dimitry Andric 2022-07-24 22:54:08 +02:00
parent afbb648176
commit 6e9a64d7ef
1 changed files with 14 additions and 3 deletions
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17
sys/dev/iscsi/icl_soft.c
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@ -883,7 +883,10 @@ icl_conn_send_pdus(struct icl_soft_conn *isc, struct icl_pdu_stailq *queue)
struct mbuf *m;
struct socket *so;
long available, size, size2;
int coalesced, error;
#ifdef DEBUG_COALESCED
int coalesced;
#endif
int error;
ICL_CONN_LOCK_ASSERT_NOT(ic);
@ -942,7 +945,15 @@ icl_conn_send_pdus(struct icl_soft_conn *isc, struct icl_pdu_stailq *queue)
}
if (coalesce) {
m = request->ip_bhs_mbuf;
for (coalesced = 1; ; coalesced++) {
for (
#ifdef DEBUG_COALESCED
coalesced = 1
#endif
; ;
#ifdef DEBUG_COALESCED
coalesced++
#endif
) {
request2 = STAILQ_FIRST(queue);
if (request2 == NULL)
break;
@ -967,7 +978,7 @@ icl_conn_send_pdus(struct icl_soft_conn *isc, struct icl_pdu_stailq *queue)
size += size2;
icl_soft_pdu_done(request2, 0);
}
#if 0
#ifdef DEBUG_COALESCED
if (coalesced > 1) {
ICL_DEBUG("coalesced %d PDUs into %ld bytes",
coalesced, size);