From: Cédric Le Goater <clg@kaod.org>
Date: Thu, 1 Jul 2021 13:27:19 +0000 (+0200)
Subject: powerpc/pseries/pci: Introduce __find_pe_total_msi()
X-Git-Tag: v5.15-rc1~100^2~118
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=786e5b102a0007d81579822eac23cb5bfaa0b65f;p=thirdparty%2Flinux.git

powerpc/pseries/pci: Introduce __find_pe_total_msi()

It will help to size the PCI MSI domain.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-2-clg@kaod.org
---

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 637300330507f..d2d090e047451 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -164,12 +164,12 @@ static int check_req_msix(struct pci_dev *pdev, int nvec)
 
 /* Quota calculation */
 
-static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
+static struct device_node *__find_pe_total_msi(struct device_node *node, int *total)
 {
 	struct device_node *dn;
 	const __be32 *p;
 
-	dn = of_node_get(pci_device_to_OF_node(dev));
+	dn = of_node_get(node);
 	while (dn) {
 		p = of_get_property(dn, "ibm,pe-total-#msi", NULL);
 		if (p) {
@@ -185,6 +185,11 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
 	return NULL;
 }
 
+static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
+{
+	return __find_pe_total_msi(pci_device_to_OF_node(dev), total);
+}
+
 static struct device_node *find_pe_dn(struct pci_dev *dev, int *total)
 {
 	struct device_node *dn;