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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2016-11-30 08:06:12 +0100 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2016-12-01 08:45:49 -0700 |
| commit | d256459fae4dba66d50850f2d948306503818913 (patch) | |
| tree | f9acd3ff5693a5bfec056c531808aee9963adf78 /drivers/vfio | |
| parent | 5ba6de98c78ac45166036516e34bec487887ba5d (diff) | |
| download | linux-stable-d256459fae4dba66d50850f2d948306503818913.tar.gz linux-stable-d256459fae4dba66d50850f2d948306503818913.tar.bz2 linux-stable-d256459fae4dba66d50850f2d948306503818913.zip | |
vfio: Fix handling of error returned by 'vfio_group_get_from_dev()'
'vfio_group_get_from_dev()' seems to return only NULL on error, not an
error pointer.
Fixes: 2169037dc322 ("vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops")
Fixes: c086de818dd8 ("vfio iommu: Add blocking notifier to notify DMA_UNMAP")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 0aac3ca54a53..7b39313abf0d 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1933,8 +1933,8 @@ int vfio_pin_pages(struct device *dev, unsigned long *user_pfn, int npage, return -E2BIG; group = vfio_group_get_from_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); + if (!group) + return -ENODEV; ret = vfio_group_add_container_user(group); if (ret) @@ -1982,8 +1982,8 @@ int vfio_unpin_pages(struct device *dev, unsigned long *user_pfn, int npage) return -E2BIG; group = vfio_group_get_from_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); + if (!group) + return -ENODEV; ret = vfio_group_add_container_user(group); if (ret) @@ -2019,8 +2019,8 @@ int vfio_register_notifier(struct device *dev, struct notifier_block *nb) return -EINVAL; group = vfio_group_get_from_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); + if (!group) + return -ENODEV; ret = vfio_group_add_container_user(group); if (ret) @@ -2055,8 +2055,8 @@ int vfio_unregister_notifier(struct device *dev, struct notifier_block *nb) return -EINVAL; group = vfio_group_get_from_dev(dev); - if (IS_ERR(group)) - return PTR_ERR(group); + if (!group) + return -ENODEV; ret = vfio_group_add_container_user(group); if (ret) |