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| author | Imre Deak <imre.deak@intel.com> | 2017-05-23 22:18:17 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-05-23 22:18:17 +0300 |
| commit | 4d071c3238987325b9e50e33051a40d1cce311cc (patch) | |
| tree | a35e74ea39923f868bbcfd051c03f1868df8eeb2 /include | |
| parent | 415b6185c541dc0a21457ff307cdb61950a6eb9f (diff) | |
| download | linux-4d071c3238987325b9e50e33051a40d1cce311cc.tar.xz | |
PCI/PM: Add needs_resume flag to avoid suspend complete optimization
Some drivers - like i915 - may not support the system suspend direct
complete optimization due to differences in their runtime and system
suspend sequence. Add a flag that when set resumes the device before
calling the driver's system suspend handlers which effectively disables
the optimization.
Needed by a future patch fixing suspend/resume on i915.
Suggested by Rafael.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 33c2b0b77429..df7dd9021646 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -183,6 +183,11 @@ enum pci_dev_flags { PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT = (__force pci_dev_flags_t) (1 << 9), /* Do not use FLR even if device advertises PCI_AF_CAP */ PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10), + /* + * Resume before calling the driver's system suspend hooks, disabling + * the direct_complete optimization. + */ + PCI_DEV_FLAGS_NEEDS_RESUME = (__force pci_dev_flags_t) (1 << 11), }; enum pci_irq_reroute_variant { |