s390/pci: introduce zpci_bus_scan_device()

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To match zpci_bus_scan_device() and the PCI common code terminology and
to remove some code duplication, we pull the multiple uses of
pci_scan_single_device() into a function. For now this has the side
effect of adding each device to the PCI bus separately and locking and
unlocking the rescan/remove lock for each instead of just once per bus.
This is clearly less efficient but provides a correct intermediate
behavior until a follow on change does both the adding and scanning only
once per bus.

Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Niklas Schnelle 2021-02-11 14:20:03 +01:00 • committed by Heiko Carstens

parent 6f8daa2953

commit faf29a4d93

3 changed files with 28 additions and 17 deletions

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9

arch/s390/pci/pci.c

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35

arch/s390/pci/pci_bus.c

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1

arch/s390/pci/pci_bus.h

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