gve: Return error for unknown admin queue command

[ Upstream commit b11344f63fdd9e8c5121148a6965b41079071dd2 ]

In gve_adminq_issue_cmd(), return -EINVAL instead of 0 when an unknown
admin queue command opcode is encountered.

This prevents the function from silently succeeding on invalid input
and prevents undefined behavior by ensuring the function fails gracefully
when an unrecognized opcode is provided.

These changes improve error handling.

Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Link: https://patch.msgid.link/20250616054504.1644770-2-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c
index 79db7a6d42bc2f7f00ff0a19cd59898b2eab5d54..9c50febb427179dbd68796d1afcf87aa2d57bbab 100644 (file)
--- a/drivers/net/ethernet/google/gve/gve_adminq.c
+++ b/drivers/net/ethernet/google/gve/gve_adminq.c
@@ -431,6 +431,7 @@ static int gve_adminq_issue_cmd(struct gve_priv *priv,
                break;
        default:
                dev_err(&priv->pdev->dev, "unknown AQ command opcode %d\n", opcode);
+               return -EINVAL;
        }
 
        return 0;