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| author |   Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-10-18 15:38:47 +0800 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2019-10-21 15:13:18 +0200 |
| commit | 52525b7a3cf82adec5c6cf0ecbd23ff228badc94 (patch) | |
| tree | 673ac3d1e755a12b1a04610066fa15366f56a1e9 /include/linux/pci.h | |
| parent | ALSA: firewire-lib: postpone to start IR context (diff) | |
| download | wireguard-linux-52525b7a3cf82adec5c6cf0ecbd23ff228badc94.tar.xz wireguard-linux-52525b7a3cf82adec5c6cf0ecbd23ff228badc94.zip | |
PCI: Add a helper to check Power Resource Requirements _PR3 existence
A driver may want to know the existence of _PR3, to choose different
runtime suspend behavior. A user will be add in next patch.
This is mostly the same as nouveau_pr3_present().
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20191018073848.14590-1-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index f9088c89a534..1d15c5d49cdd 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2310,9 +2310,11 @@ struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus); void pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *)); +bool pci_pr3_present(struct pci_dev *pdev); #else static inline struct irq_domain * pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; } +static bool pci_pr3_present(struct pci_dev *pdev) { return false; } #endif #ifdef CONFIG_EEH |