PCI: dwc: Set 32-bit DMA mask for MSI target address allocation

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Set DMA mask to 32-bit while allocating the MSI target address so that
the address is usable for both 32-bit and 64-bit MSI capable devices.
Throw a warning if it fails to set the mask to 32-bit to alert that
devices that are only 32-bit MSI capable may not work properly.

Link: https://lore.kernel.org/r/20201117165312.25847-1-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>

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Vidya Sagar 2020-11-17 22:23:12 +05:30 • committed by Lorenzo Pieralisi

parent 4c93988221

commit 660c486590

1 changed files with 8 additions and 0 deletions

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drivers/pci/controller/dwc/pcie-designware-host.c

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