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crypto: hisilicon/qm - return failure if vfs_num exceeds total VFs

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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>
This commit is contained in:
Weili Qian 2022-08-27 18:27:56 +08:00 committed by Herbert Xu
parent 5afc904f44
commit fa2bf6e350
1 changed files with 7 additions and 1 deletions
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8
drivers/crypto/hisilicon/qm.c
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@ -4766,7 +4766,13 @@ 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");