[PATCH 5.12 011/161] vfio/pci: Fix error return code in vfio_ecap_init()

From: Greg Kroah-Hartman
Date: Tue Jun 08 2021 - 15:13:34 EST


From: Zhen Lei <thunder.leizhen@xxxxxxxxxx>

[ Upstream commit d1ce2c79156d3baf0830990ab06d296477b93c26 ]

The error code returned from vfio_ext_cap_len() is stored in 'len', not
in 'ret'.

Fixes: 89e1f7d4c66d ("vfio: Add PCI device driver")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Reviewed-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
Message-Id: <20210515020458.6771-1-thunder.leizhen@xxxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/vfio/pci/vfio_pci_config.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index a402adee8a21..47f21a6ca7fe 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1581,7 +1581,7 @@ static int vfio_ecap_init(struct vfio_pci_device *vdev)
if (len == 0xFF) {
len = vfio_ext_cap_len(vdev, ecap, epos);
if (len < 0)
- return ret;
+ return len;
}
}

--
2.30.2