[patch 1/3 v2] vfio: signedness bug in vfio_config_do_rw()

Dan Carpenter
2012-06-28T08:07:25Z

The "count" variable needs to be signed here because we use it to store
negative error codes.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: Just declare count as signed.

diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index a4f7321..2e00aa8 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1419,7 +1419,7 @@ void vfio_config_free(struct vfio_pci_device *vdev)
}

static ssize_t vfio_config_do_rw(struct vfio_pci_device *vdev, char __user *buf,
- size_t count, loff_t *ppos, bool iswrite)
+ ssize_t count, loff_t *ppos, bool iswrite)
{
struct pci_dev *pdev = vdev->pdev;
struct perm_bits *perm;