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crypto: caam/qi - fix warning in init_cgr()

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Coverity warns about an
"Unintentional integer overflow (OVERFLOW_BEFORE_WIDEN)"
when computing the congestion threshold value.

Even though it is highly unlikely for an overflow to happen,
use this as an opportunity to simplify the code.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Horia Geantă 2018-05-23 14:32:42 +03:00 committed by Herbert Xu
parent b2106476a8
commit d9c35771d8
1 changed files with 2 additions and 3 deletions
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5
drivers/crypto/caam/qi.c
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@ -657,9 +657,8 @@ static int init_cgr(struct device *qidev)
{
int ret;
struct qm_mcc_initcgr opts;
const u64 cpus = *(u64 *)qman_affine_cpus();
const int num_cpus = hweight64(cpus);
const u64 val = num_cpus * MAX_RSP_FQ_BACKLOG_PER_CPU;
const u64 val = (u64)cpumask_weight(qman_affine_cpus()) *
MAX_RSP_FQ_BACKLOG_PER_CPU;
ret = qman_alloc_cgrid(&qipriv.cgr.cgrid);
if (ret) {