[ add linux-pci ] Ira Weiny wrote: > Users of pci_dev_get() can benefit from a scoped based put. Also, > locking a PCI device is often done within a single scope. > > Define a pci_dev_put() free function and a PCI device lock guard. These > will initially be used in new CXL event processing code but is defined > in a separate patch for others to pickup and use/backport easier. Hi Bjorn, Any heartburn if I take this through cxl.git with the rest in this series? Patch 9 has a dependency on this one. > > Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx> > > --- > Changes for v5: > [Jonathan: New patch] > --- > include/linux/pci.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/pci.h b/include/linux/pci.h > index 60ca768bc867..290d0a2651b2 100644 > --- a/include/linux/pci.h > +++ b/include/linux/pci.h > @@ -1170,6 +1170,7 @@ int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); > u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); > struct pci_dev *pci_dev_get(struct pci_dev *dev); > void pci_dev_put(struct pci_dev *dev); > +DEFINE_FREE(pci_dev_put, struct pci_dev *, if (_T) pci_dev_put(_T)) > void pci_remove_bus(struct pci_bus *b); > void pci_stop_and_remove_bus_device(struct pci_dev *dev); > void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); > @@ -1871,6 +1872,7 @@ void pci_cfg_access_unlock(struct pci_dev *dev); > void pci_dev_lock(struct pci_dev *dev); > int pci_dev_trylock(struct pci_dev *dev); > void pci_dev_unlock(struct pci_dev *dev); > +DEFINE_GUARD(pci_dev, struct pci_dev *, pci_dev_lock(_T), pci_dev_unlock(_T)) > > /* > * PCI domain support. Sometimes called PCI segment (eg by ACPI), > > -- > 2.43.0 >
