[PATCH 6.0 0559/1073] crypto: hisilicon/qm - re-enable communicate interrupt before notifying PF

Greg Kroah-Hartman
2022-12-28T16:07:07Z

From: Weili Qian <qianweili@huawei.com>

[ Upstream commit ee1537fe3dd89860d0336563891f6cac707d0cb5 ]

After the device is reset, the VF needs to re-enable communication
interrupt before the VF sends restart complete message to the PF.
If the interrupt is re-enabled after the VF notifies the PF, the PF
may fail to send messages to the VF after receiving VF's restart
complete message.

Fixes: 760fe22cf5e9 ("crypto: hisilicon/qm - update reset flow")
Signed-off-by: Weili Qian <qianweili@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 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 2cfb072a218f..180589c73663 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -5776,6 +5776,7 @@ static void qm_pf_reset_vf_done(struct hisi_qm *qm)
cmd = QM_VF_START_FAIL;
}

+ qm_cmd_init(qm);
ret = qm_ping_pf(qm, cmd);
if (ret)
dev_warn(&pdev->dev, "PF responds timeout in reset done!\n");
@@ -5837,7 +5838,6 @@ static void qm_pf_reset_vf_process(struct hisi_qm *qm,
goto err_get_status;

qm_pf_reset_vf_done(qm);
- qm_cmd_init(qm);

dev_info(dev, "device reset done.\n");

--
2.35.1