6.6-stable review patch. If anyone has any objections, please let me know.
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From: Zhushuai Yin yinzhushuai@huawei.com
[ Upstream commit 6a2c9164b52e6bc134127fd543461fdef95cc8ec ]
Function rate limiting is set through physical function driver. Users configure by providing function information and rate limit values. Before configuration, it is necessary to check whether the provided function and PF belong to the same device.
Fixes: 22d7a6c39cab ("crypto: hisilicon/qm - add pci bdf number check") Signed-off-by: Zhushuai Yin yinzhushuai@huawei.com Signed-off-by: Chenghai Huang huangchenghai2@huawei.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/hisilicon/qm.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 183885619eb8b..203240e78f6ad 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -3748,6 +3748,10 @@ static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf, }
pdev = container_of(dev, struct pci_dev, dev); + if (pci_physfn(pdev) != qm->pdev) { + pci_err(qm->pdev, "the pdev input does not match the pf!\n"); + return -EINVAL; + }
*fun_index = pdev->devfn;