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| author |   Muli Ben-Yehuda <muli@il.ibm.com> | 2006-09-26 10:52:31 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:31 +0200 |
| commit | 871b17008e93d7e96f96829ce5f0393c9902d25b (patch) | |
| tree | 03916d1e9c800ed74a50606408481c4b1c984f8e /arch/x86_64/kernel/pci-calgary.c | |
| parent | [PATCH] Calgary IOMMU: fix error path memleak in calgary_free_tar (diff) | |
| download | linux-dev-871b17008e93d7e96f96829ce5f0393c9902d25b.tar.xz linux-dev-871b17008e93d7e96f96829ce5f0393c9902d25b.zip | |
[PATCH] Calgary IOMMU: fix reference counting of Calgary PCI devices
The pci_get_device() API decrements the reference count on the 'from'
parameter when it continues searching. Therefore, take a ref count on
Calgary bus when we initialize them in either translated or
non-translated mode.
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/kernel/pci-calgary.c')
| -rw-r--r-- | arch/x86_64/kernel/pci-calgary.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c index 6c5da1d813f3..7302834718c8 100644 --- a/arch/x86_64/kernel/pci-calgary.c +++ b/arch/x86_64/kernel/pci-calgary.c @@ -786,6 +786,7 @@ static inline unsigned int __init locate_register_space(struct pci_dev *dev) static int __init calgary_init_one_nontraslated(struct pci_dev *dev) { + pci_dev_get(dev); dev->sysdata = NULL; dev->bus->self = dev; @@ -810,6 +811,7 @@ static int __init calgary_init_one(struct pci_dev *dev) if (ret) goto iounmap; + pci_dev_get(dev); dev->bus->self = dev; calgary_enable_translation(dev); @@ -836,10 +838,9 @@ static int __init calgary_init(void) calgary_init_one_nontraslated(dev); continue; } - if (!bus_info[dev->bus->number].tce_space && !translate_empty_slots) { - pci_dev_put(dev); + if (!bus_info[dev->bus->number].tce_space && !translate_empty_slots) continue; - } + ret = calgary_init_one(dev); if (ret) goto error; @@ -860,9 +861,10 @@ error: } if (!bus_info[dev->bus->number].tce_space && !translate_empty_slots) continue; + calgary_disable_translation(dev); calgary_free_bus(dev); - pci_dev_put(dev); + pci_dev_put(dev); /* Undo calgary_init_one()'s pci_dev_get() */ } return ret; |