linux-kernel - [RFC PATCH 04/15] virtio_crypto: Handle virtio_device

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Date:   Mon, 17 May 2021 17:34:17 +0800
From:   Xie Yongji <xieyongji@...edance.com>
To:     mst@...hat.com, jasowang@...hat.com, stefanha@...hat.com
Cc:     amit@...nel.org, arei.gonglei@...wei.com, airlied@...ux.ie,
        kraxel@...hat.com, jean-philippe@...aro.org, ohad@...ery.com,
        bjorn.andersson@...aro.org, david@...hat.com, vgoyal@...hat.com,
        miklos@...redi.hu, lucho@...kov.net, asmadeus@...ewreck.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: [RFC PATCH 04/15] virtio_crypto: Handle virtio_device_ready() failure

Now virtio_device_ready() will return error if we get
invalid status. Let's handle this case in both probe
and resume paths.

Signed-off-by: Xie Yongji <xieyongji@...edance.com>
---
 drivers/crypto/virtio/virtio_crypto_core.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/virtio/virtio_crypto_core.c b/drivers/crypto/virtio/virtio_crypto_core.c
index 080955a1dd9c..18f7ffc37738 100644
--- a/drivers/crypto/virtio/virtio_crypto_core.c
+++ b/drivers/crypto/virtio/virtio_crypto_core.c
@@ -393,7 +393,9 @@ static int virtcrypto_probe(struct virtio_device *vdev)
 	if (err)
 		goto free_vqs;
 
-	virtio_device_ready(vdev);
+	err = virtio_device_ready(vdev);
+	if (err)
+		goto free_engines;
 
 	err = virtcrypto_update_status(vcrypto);
 	if (err)
@@ -479,7 +481,9 @@ static int virtcrypto_restore(struct virtio_device *vdev)
 	if (err)
 		goto free_vqs;
 
-	virtio_device_ready(vdev);
+	err = virtio_device_ready(vdev);
+	if (err)
+		goto free_engines;
 
 	err = virtcrypto_dev_start(vcrypto);
 	if (err) {
-- 
2.11.0