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authorArvind Yadav <arvind.yadav.cs@gmail.com>2017-01-03 17:26:46 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-06 18:59:48 -0700
commit812a7df6556faae25deb42dbcc9e47829855556f (patch)
treef526feab115a50738d6e45b41e5999b3b4746f41 /drivers/vfio
parenta417ea5b9d22dc5733f6fac5cee72735cb7f8d99 (diff)
vfio-pci: Handle error from pci_iomap
[ Upstream commit e19f32da5ded958238eac1bbe001192acef191a2 ] 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> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vfio')
-rw-r--r--drivers/vfio/pci/vfio_pci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 031bc08d000d..43559bed7822 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -1173,6 +1173,10 @@ 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;