linux-kernel - [PATCH 5.18 123/339] virtio: pci: Fix an error handling path in vp_modern

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Message-Id: <20220613094930.241357719@linuxfoundation.org>
Date:   Mon, 13 Jun 2022 12:09:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 123/339] virtio: pci: Fix an error handling path in vp_modern_probe()

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit 7a836a2aba09479c8e71fa43249eecc4af945f61 ]

If an error occurs after a successful pci_request_selected_regions() call,
it should be undone by a corresponding pci_release_selected_regions() call,
as already done in vp_modern_remove().

Fixes: fd502729fbbf ("virtio-pci: introduce modern device module")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Message-Id: <237109725aad2c3c03d14549f777b1927c84b045.1648977064.git.christophe.jaillet@...adoo.fr>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/virtio/virtio_pci_modern_dev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/virtio/virtio_pci_modern_dev.c b/drivers/virtio/virtio_pci_modern_dev.c
index 591738ad3d56..4093f9cca7a6 100644
--- a/drivers/virtio/virtio_pci_modern_dev.c
+++ b/drivers/virtio/virtio_pci_modern_dev.c
@@ -347,6 +347,7 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev)
 err_map_isr:
 	pci_iounmap(pci_dev, mdev->common);
 err_map_common:
+	pci_release_selected_regions(pci_dev, mdev->modern_bars);
 	return err;
 }
 EXPORT_SYMBOL_GPL(vp_modern_probe);
-- 
2.35.1