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| author | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-11 07:10:01 -0700 |
|---|---|---|
| committer | Shradha Gupta <shradhagupta@linux.microsoft.com> | 2025-06-17 06:15:14 +0000 |
| commit | 5da8a8b8090b5f79a816ba016af3a70a9d7287bf (patch) | |
| tree | 76ae40c6412f6a76af0bfa96f94a32dbbf42a5fd /drivers/pci | |
| parent | Linux 6.16-rc1 (diff) | |
| download | linux-5da8a8b8090b5f79a816ba016af3a70a9d7287bf.tar.gz linux-5da8a8b8090b5f79a816ba016af3a70a9d7287bf.zip | |
PCI/MSI: Export pci_msix_prepare_desc() for dynamic MSI-X allocations
For supporting dynamic MSI-X vector allocation by PCI controllers, enabling
the flag MSI_FLAG_PCI_MSIX_ALLOC_DYN is not enough, msix_prepare_msi_desc()
to prepare the MSI descriptor is also needed.
Export pci_msix_prepare_desc() to allow PCI controllers to support dynamic
MSI-X vector allocation.
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/msi/irqdomain.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/pci/msi/irqdomain.c b/drivers/pci/msi/irqdomain.c index c05152733993..765312c92d9b 100644 --- a/drivers/pci/msi/irqdomain.c +++ b/drivers/pci/msi/irqdomain.c @@ -222,13 +222,14 @@ static void pci_irq_unmask_msix(struct irq_data *data) pci_msix_unmask(irq_data_get_msi_desc(data)); } -static void pci_msix_prepare_desc(struct irq_domain *domain, msi_alloc_info_t *arg, - struct msi_desc *desc) +void pci_msix_prepare_desc(struct irq_domain *domain, msi_alloc_info_t *arg, + struct msi_desc *desc) { /* Don't fiddle with preallocated MSI descriptors */ if (!desc->pci.mask_base) msix_prepare_msi_desc(to_pci_dev(desc->dev), desc); } +EXPORT_SYMBOL_GPL(pci_msix_prepare_desc); static const struct msi_domain_template pci_msix_template = { .chip = { |