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| author |   Jiang Liu <jiang.liu@linux.intel.com> | 2014-01-06 14:18:09 +0800 |
|---|---|---|
| committer |   Joerg Roedel <joro@8bytes.org> | 2014-01-09 12:42:35 +0100 |
| commit | ada4d4b2a32e9f63d4dcb9f69578473408f4622c (patch) | |
| tree | 7f50f2c380f4e46bfd4fb3317a5e4f17b35c3ab2 /include/linux/dmar.h | |
| parent | iommu/vt-d: use dedicated bitmap to track remapping entry allocation status (diff) | |
| download | wireguard-linux-ada4d4b2a32e9f63d4dcb9f69578473408f4622c.tar.xz wireguard-linux-ada4d4b2a32e9f63d4dcb9f69578473408f4622c.zip | |
iommu/vt-d: fix PCI device reference leakage on error recovery path
Function dmar_parse_dev_scope() should release the PCI device reference
count gained in function dmar_parse_one_dev_scope() on error recovery,
otherwise it will cause PCI device object leakage.
This patch also introduces dmar_free_dev_scope(), which will be used
to support DMAR device hotplug.
Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'include/linux/dmar.h')
| -rw-r--r-- | include/linux/dmar.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h index b029d1aa2d12..205ee37eed73 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -62,6 +62,9 @@ extern struct list_head dmar_drhd_units; extern int dmar_table_init(void); extern int dmar_dev_scope_init(void); +extern int dmar_parse_dev_scope(void *start, void *end, int *cnt, + struct pci_dev ***devices, u16 segment); +extern void dmar_free_dev_scope(struct pci_dev ***devices, int *cnt); /* Intel IOMMU detection */ extern int detect_intel_iommu(void); @@ -157,8 +160,6 @@ struct dmar_atsr_unit { int dmar_parse_rmrr_atsr_dev(void); extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header); extern int dmar_parse_one_atsr(struct acpi_dmar_header *header); -extern int dmar_parse_dev_scope(void *start, void *end, int *cnt, - struct pci_dev ***devices, u16 segment); extern int intel_iommu_init(void); #else /* !CONFIG_INTEL_IOMMU: */ static inline int intel_iommu_init(void) { return -ENODEV; } |