[tip: irq/msi] MIPS: Octeon: Use arch_setup_msi_irq()

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the irq/msi branch of tip:

Commit-ID:     bec61847cdc7ff22d6d85e6e6436d4b7416c1f9b
Gitweb:        https://git.kernel.org/tip/bec61847cdc7ff22d6d85e6e6436d4b7416c1f9b
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Mon, 06 Dec 2021 23:27:38 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 09 Dec 2021 11:52:21 +01:00

MIPS: Octeon: Use arch_setup_msi_irq()

The core code provides the same loop code except for the MSI-X reject. Move
that to arch_setup_msi_irq() and remove the duplicated code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Acked-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211206210224.319201379@xxxxxxxxxxxxx

---
 arch/mips/pci/msi-octeon.c | 32 +++-----------------------------
 1 file changed, 3 insertions(+), 29 deletions(-)

diff --git a/arch/mips/pci/msi-octeon.c b/arch/mips/pci/msi-octeon.c
index 288b58b..c2860eb 100644
--- a/arch/mips/pci/msi-octeon.c
+++ b/arch/mips/pci/msi-octeon.c
@@ -68,6 +68,9 @@ int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
 	u64 search_mask;
 	int index;
 
+	if (desc->pci.msi_attrib.is_msix)
+		return -EINVAL;
+
 	/*
 	 * Read the MSI config to figure out how many IRQs this device
 	 * wants.  Most devices only want 1, which will give
@@ -182,35 +185,6 @@ msi_irq_allocated:
 	return 0;
 }
 
-int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-{
-	struct msi_desc *entry;
-	int ret;
-
-	/*
-	 * MSI-X is not supported.
-	 */
-	if (type == PCI_CAP_ID_MSIX)
-		return -EINVAL;
-
-	/*
-	 * If an architecture wants to support multiple MSI, it needs to
-	 * override arch_setup_msi_irqs()
-	 */
-	if (type == PCI_CAP_ID_MSI && nvec > 1)
-		return 1;
-
-	for_each_pci_msi_entry(entry, dev) {
-		ret = arch_setup_msi_irq(dev, entry);
-		if (ret < 0)
-			return ret;
-		if (ret > 0)
-			return -ENOSPC;
-	}
-
-	return 0;
-}
-
 /**
  * Called when a device no longer needs its MSI interrupts. All
  * MSI interrupts for the device are freed.