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| author |   Christoph Hellwig <hch@lst.de> | 2020-01-21 06:37:45 -0700 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2020-01-24 14:54:08 -0600 |
| commit | aad6aa0cd674b7935957354666f82e5b2cdc813d (patch) | |
| tree | dd5d00a559f488e8da51c4b6df713a6628248793 /arch/x86/include | |
| parent | Linux 5.5-rc1 (diff) | |
| download | linux-dev-aad6aa0cd674b7935957354666f82e5b2cdc813d.tar.xz linux-dev-aad6aa0cd674b7935957354666f82e5b2cdc813d.zip | |
x86/PCI: Add to_pci_sysdata() helper
Various helpers need the pci_sysdata just to dereference a single field in
it. Add a little helper that returns the properly typed sysdata pointer to
require a little less boilerplate code.
[jonathan.derrick: to_pci_sysdata const argument]
Link: https://lore.kernel.org/r/1579613871-301529-2-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 90d0731fdcb6..a4e09db60f52 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -35,12 +35,15 @@ extern int noioapicreroute; #ifdef CONFIG_PCI +static inline struct pci_sysdata *to_pci_sysdata(const struct pci_bus *bus) +{ + return bus->sysdata; +} + #ifdef CONFIG_PCI_DOMAINS static inline int pci_domain_nr(struct pci_bus *bus) { - struct pci_sysdata *sd = bus->sysdata; - - return sd->domain; + return to_pci_sysdata(bus)->domain; } static inline int pci_proc_domain(struct pci_bus *bus) @@ -52,24 +55,20 @@ static inline int pci_proc_domain(struct pci_bus *bus) #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) { - struct pci_sysdata *sd = bus->sysdata; - - return sd->fwnode; + return to_pci_sysdata(bus)->fwnode; } #define pci_root_bus_fwnode _pci_root_bus_fwnode #endif +#if IS_ENABLED(CONFIG_VMD) static inline bool is_vmd(struct pci_bus *bus) { -#if IS_ENABLED(CONFIG_VMD) - struct pci_sysdata *sd = bus->sysdata; - - return sd->vmd_domain; -#else - return false; -#endif + return to_pci_sysdata(bus)->vmd_domain; } +#else +#define is_vmd(bus) false +#endif /* CONFIG_VMD */ /* Can be used to override the logic in pci_scan_bus for skipping already-configured bus numbers - to be used for buggy BIOSes @@ -124,9 +123,7 @@ void native_restore_msi_irqs(struct pci_dev *dev); /* Returns the node based on pci bus */ static inline int __pcibus_to_node(const struct pci_bus *bus) { - const struct pci_sysdata *sd = bus->sysdata; - - return sd->node; + return to_pci_sysdata(bus)->node; } static inline const struct cpumask * |