linux-kernel - [PATCH] virtio_pci: modify ENOENT to EINVAL

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Message-Id: <20221101111655.1947-1-angus.chen@jaguarmicro.com>
Date:   Tue,  1 Nov 2022 19:16:54 +0800
From:   Angus Chen <angus.chen@...uarmicro.com>
To:     jasowang@...hat.com, mst@...hat.com
Cc:     virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, lingshan.zhu@...el.com,
        Angus Chen <angus.chen@...uarmicro.com>
Subject: [PATCH] virtio_pci: modify ENOENT to EINVAL

Virtio_crypto use max_data_queues+1 to setup vqs,
we use vp_modern_get_num_queues to protect the vq range in setup_vq.
We could enter index >= vp_modern_get_num_queues(mdev) in setup_vq
if common->num_queues is not set well,and it return -ENOENT.
It is better to use -EINVAL instead.

Signed-off-by: Angus Chen <angus.chen@...uarmicro.com>
---
 drivers/virtio/virtio_pci_modern.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index c3b9f2761849..edf2e18014cd 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -303,7 +303,7 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
 	int err;
 
 	if (index >= vp_modern_get_num_queues(mdev))
-		return ERR_PTR(-ENOENT);
+		return ERR_PTR(-EINVAL);
 
 	/* Check if queue is either not available or already active. */
 	num = vp_modern_get_queue_size(mdev, index);
-- 
2.25.1