The patch below does not apply to the 5.16-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c5d692a2335d64ac390aeb8ab6c4ac9f662e1be4 Mon Sep 17 00:00:00 2001 From: Tom Rix trix@redhat.com Date: Wed, 22 Dec 2021 09:29:23 -0800 Subject: [PATCH] crypto: hisilicon - cleanup warning in qm_get_qos_value()

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

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index b731cb4ec294..c5b84a5ea350 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -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; }