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irqchip/gic-v3-its: Count additional LPIs for the aliased devices

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When configuring the interrupt mapping for a new device, we
iterate over all the possible aliases to account for their
maximum MSI allocation. This was introduced by e8137f4f50
("irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration").

Turns out that the code doing that is a bit braindead, and repeatedly
accounts for the same device over and over.

Fix this by counting the actual alias that is passed to us by the
core code.

Signed-off-by: Marc Zyngier <[email protected]>
Cc: [email protected]
Cc: Alex Shi <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: David Daney <[email protected]>
Cc: Jason Cooper <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Marc Zyngier 2015-10-02 16:44:06 +01:00 • committed by Thomas Gleixner
commit 791c76d584
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-gic-v3-its-pci-msi.c
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@ -62,7 +62,7 @@ static int its_get_pci_alias(struct pci_dev *pdev, u16 alias, void *data)
dev_alias->dev_id = alias;
if (pdev != dev_alias->pdev)
dev_alias->count += its_pci_msi_vec_count(dev_alias->pdev);
dev_alias->count += its_pci_msi_vec_count(pdev);
return 0;
}