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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-06-10 13:59:27 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-06-11 09:42:25 +0200 |
| commit | 409e553deeeb08d644ed1110e0f1c97b71cb6409 (patch) | |
| tree | 276c6a82017f980b1ee75cafbb7930f79476570c /drivers/iommu/iommu.c | |
| parent | 3a18404cd952ae529651f72a13e5d6ffee824c2e (diff) | |
| download | linux-409e553deeeb08d644ed1110e0f1c97b71cb6409.tar.bz2 | |
iommu: Checking for NULL instead of IS_ERR
The iommu_group_alloc() and iommu_group_get_for_dev()
functions return error pointers, they never return NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 3b1a2551a747..89dc50b9acdc 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -788,15 +788,16 @@ static struct iommu_group *iommu_group_get_for_pci_dev(struct pci_dev *pdev) /* No shared group found, allocate new */ group = iommu_group_alloc(); - if (group) { - /* - * Try to allocate a default domain - needs support from the - * IOMMU driver. - */ - group->default_domain = __iommu_domain_alloc(pdev->dev.bus, - IOMMU_DOMAIN_DMA); - group->domain = group->default_domain; - } + if (IS_ERR(group)) + return NULL; + + /* + * Try to allocate a default domain - needs support from the + * IOMMU driver. + */ + group->default_domain = __iommu_domain_alloc(pdev->dev.bus, + IOMMU_DOMAIN_DMA); + group->domain = group->default_domain; return group; } @@ -1548,8 +1549,8 @@ int iommu_request_dm_for_dev(struct device *dev) /* Device must already be in a group before calling this function */ group = iommu_group_get_for_dev(dev); - if (!group) - return -EINVAL; + if (IS_ERR(group)) + return PTR_ERR(group); mutex_lock(&group->mutex); |