linux-kernel - [PATCH 9/9] x86/pci: Reorder pci_mmcfg_arch

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Message-Id: <20231121183643.249006-10-helgaas@kernel.org>
Date:   Tue, 21 Nov 2023 12:36:43 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     linux-pci@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H . Peter Anvin" <hpa@...or.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Dan Williams <dan.j.williams@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Yunying Sun <yunying.sun@...el.com>,
        Tomasz Pala <gotar@...anet.pl>,
        Sebastian Manciulea <manciuleas@...tonmail.com>,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 9/9] x86/pci: Reorder pci_mmcfg_arch_map() definition before calls

From: Bjorn Helgaas <bhelgaas@...gle.com>

The typical style is to define functions before calling them.  Move
pci_mmcfg_arch_map() and pci_mmcfg_arch_unmap() earlier so they're defined
before they're called.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 arch/x86/pci/mmconfig_64.c | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c
index dfdeac0a7571..cb5aa79a759e 100644
--- a/arch/x86/pci/mmconfig_64.c
+++ b/arch/x86/pci/mmconfig_64.c
@@ -111,6 +111,25 @@ static void __iomem *mcfg_ioremap(struct pci_mmcfg_region *cfg)
 	return addr;
 }
 
+int pci_mmcfg_arch_map(struct pci_mmcfg_region *cfg)
+{
+	cfg->virt = mcfg_ioremap(cfg);
+	if (!cfg->virt) {
+		pr_err("can't map ECAM at %pR\n", &cfg->res);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg)
+{
+	if (cfg && cfg->virt) {
+		iounmap(cfg->virt + PCI_MMCFG_BUS_OFFSET(cfg->start_bus));
+		cfg->virt = NULL;
+	}
+}
+
 int __init pci_mmcfg_arch_init(void)
 {
 	struct pci_mmcfg_region *cfg;
@@ -133,22 +152,3 @@ void __init pci_mmcfg_arch_free(void)
 	list_for_each_entry(cfg, &pci_mmcfg_list, list)
 		pci_mmcfg_arch_unmap(cfg);
 }
-
-int pci_mmcfg_arch_map(struct pci_mmcfg_region *cfg)
-{
-	cfg->virt = mcfg_ioremap(cfg);
-	if (!cfg->virt) {
-		pr_err("can't map ECAM at %pR\n", &cfg->res);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg)
-{
-	if (cfg && cfg->virt) {
-		iounmap(cfg->virt + PCI_MMCFG_BUS_OFFSET(cfg->start_bus));
-		cfg->virt = NULL;
-	}
-}
-- 
2.34.1