From: Weili Qian <qianweili@huawei.com> mainline inclusion from mainline-v6.1-rc1 commit fa2bf6e35091e66fc83af1aebea06a78a5a2fde4 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5T7AD CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... ---------------------------------------------------------------------- The accelerator drivers supports users to enable VFs through the module parameter 'vfs_num'. If the number of VFs to be enabled exceeds the total VFs, all VFs are enabled. Change it to the same as enabling VF through the 'sriov_numvfs' file. Returns -ERANGE if the number of VFs to be enabled exceeds total VFs. Signed-off-by: Weili Qian <qianweili@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Jiangshui Yang <yangjiangshui@h-partners.com> Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com> Reviewed-by: Yang Shen <shenyang39@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/crypto/hisilicon/qm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 26f949b2a387..5a262306a400 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -4770,7 +4770,13 @@ int hisi_qm_sriov_enable(struct pci_dev *pdev, int max_vfs) goto err_put_sync; } - num_vfs = min_t(int, max_vfs, total_vfs); + if (max_vfs > total_vfs) { + pci_err(pdev, "%d VFs is more than total VFs %d!\n", max_vfs, total_vfs); + ret = -ERANGE; + goto err_put_sync; + } + + num_vfs = max_vfs; ret = qm_vf_q_assign(qm, num_vfs); if (ret) { pci_err(pdev, "Can't assign queues for VF!\n"); -- 2.20.1