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crypto: hisilicon - cleanup warning in qm_get_qos_value()

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Building with clang static analysis returns this warning:

qm.c:4382:11: warning: The left operand of '==' is a garbage value
        if (*val == 0 || *val > QM_QOS_MAX_VAL || ret) {
            ~~~~ ^

The call to qm_qos_value_init() can return an error without setting
*val.  So check ret before checking *val.

Fixes: 72b010dc33b9 ("crypto: hisilicon/qm - supports writing QoS int the host")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Rix 2021-12-22 09:29:23 -08:00 committed by Herbert Xu
parent 304b4acee2
commit c5d692a233
1 changed files with 1 additions and 1 deletions
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2
drivers/crypto/hisilicon/qm.c
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@ -4394,7 +4394,7 @@ static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf,
return -EINVAL;
ret = qm_qos_value_init(val_buf, val);
if (*val == 0 || *val > QM_QOS_MAX_VAL || ret) {
if (ret || *val == 0 || *val > QM_QOS_MAX_VAL) {
pci_err(qm->pdev, "input qos value is error, please set 1~1000!\n");
return -EINVAL;
}