diff options
| author |   Hao, Xudong <xudong.hao@intel.com> | 2011-12-17 21:24:40 +0800 |
|---|---|---|
| committer |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-01-06 12:11:18 -0800 |
| commit | 1900ca132f53c3d51e6e6b94ea8912530223c63a (patch) | |
| tree | 01f7e215f1ba735e54f30c27c3fd91dd747b2c5a /drivers/pci/pci.h | |
| parent | PCI: msi: fix imbalanced refcount of msi irq sysfs objects (diff) | |
| download | linux-dev-1900ca132f53c3d51e6e6b94ea8912530223c63a.tar.xz linux-dev-1900ca132f53c3d51e6e6b94ea8912530223c63a.zip | |
PCI: Enable ATS at the device state restore
During S3 or S4 resume or PCI reset, ATS regs aren't restored correctly.
This patch enables ATS at the device state restore if PCI device has ATS
capability.
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 3b6e4ed306b6..1009a5e88e53 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -251,6 +251,14 @@ struct pci_sriov { u8 __iomem *mstate; /* VF Migration State Array */ }; +#ifdef CONFIG_PCI_ATS +extern void pci_restore_ats_state(struct pci_dev *dev); +#else +static inline void pci_restore_ats_state(struct pci_dev *dev) +{ +} +#endif /* CONFIG_PCI_ATS */ + #ifdef CONFIG_PCI_IOV extern int pci_iov_init(struct pci_dev *dev); extern void pci_iov_release(struct pci_dev *dev); |