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vfio-pci: Handle error from pci_iomap
author
Arvind Yadav
<arvind.yadav.cs@gmail.com>
Tue, 3 Jan 2017 11:56:46 +0000
(17:26 +0530)
committer
Alex Williamson
<alex.williamson@redhat.com>
Wed, 4 Jan 2017 15:34:39 +0000
(08:34 -0700)
Here, pci_iomap can fail, handle this case release selected
pci regions and return -ENOMEM.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
drivers/vfio/pci/vfio_pci.c
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diff --git
a/drivers/vfio/pci/vfio_pci.c
b/drivers/vfio/pci/vfio_pci.c
index
dcd7c2a
..
324c52e
100644
(file)
--- a/
drivers/vfio/pci/vfio_pci.c
+++ b/
drivers/vfio/pci/vfio_pci.c
@@
-1142,6
+1142,10
@@
static int vfio_pci_mmap(void *device_data, struct vm_area_struct *vma)
return ret;
vdev->barmap[index] = pci_iomap(pdev, index, 0);
+ if (!vdev->barmap[index]) {
+ pci_release_selected_regions(pdev, 1 << index);
+ return -ENOMEM;
+ }
}
vma->vm_private_data = vdev;