diff options
| author |   Shukun Tan <tanshukun1@huawei.com> | 2020-08-15 17:56:14 +0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2020-08-21 14:47:52 +1000 |
| commit | 8d8f8d494da7834708442070841bc91812fd3e00 (patch) | |
| tree | 2f4c6e03f46852a89e1ba3bbf5513684022fe797 /drivers/crypto/hisilicon | |
| parent | crypto: hisilicon/qm - fix no stop reason when use 'hisi_qm_stop' (diff) | |
| download | linux-dev-8d8f8d494da7834708442070841bc91812fd3e00.tar.xz linux-dev-8d8f8d494da7834708442070841bc91812fd3e00.zip | |
crypto: hisilicon/qm - fix VF not available after PF FLR
When PF FLR, the hardware will actively trigger the VF FLR. Configuration
space of VF needs to be saved and restored to ensure that it is available
after the PF FLR.
Fixes: 7ce396fa12a9("crypto: hisilicon - add FLR support")
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/hisilicon')
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 6d233b42c7e2..3c37e0099a4b 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -3318,6 +3318,9 @@ static int qm_vf_reset_prepare(struct hisi_qm *qm, continue; if (pci_physfn(virtfn) == pdev) { + /* save VFs PCIE BAR configuration */ + pci_save_state(virtfn); + ret = hisi_qm_stop(vf_qm, stop_reason); if (ret) goto stop_fail; @@ -3481,6 +3484,9 @@ static int qm_vf_reset_done(struct hisi_qm *qm) continue; if (pci_physfn(virtfn) == pdev) { + /* enable VFs PCIE BAR configuration */ + pci_restore_state(virtfn); + ret = qm_restart(vf_qm); if (ret) goto restart_fail; |