Commit 8d8f8d49 authored by Shukun Tan's avatar Shukun Tan Committed by Herbert Xu
Browse files

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: 7ce396fa("crypto: hisilicon - add FLR support")
Signed-off-by: default avatarShukun Tan <tanshukun1@huawei.com>
Signed-off-by: default avatarYang Shen <shenyang39@huawei.com>
Reviewed-by: default avatarZhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent e88dd6e1

drivers/crypto/hisilicon/qm.c

+6 −0
Original line number Diff line number Diff line
@@ -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;