PCI/MSI: Provide pci_ims_alloc/free_irq()

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Single vector allocation which allocates the next free index in the IMS
space. The free function releases.

All allocated vectors are released also via pci_free_vectors() which is
also releasing MSI/MSI-X vectors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232326.961711347@linutronix.de

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Thomas Gleixner 2022-11-25 00:26:31 +01:00

parent 0194425af0

commit c9e5bea273

2 changed files with 53 additions and 0 deletions

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50

drivers/pci/msi/api.c

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3

include/linux/pci.h

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