linux-kernel - [PATCH v2 7/8] MIPS: pci-legacy: remove busn

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Message-Id: <20210414031240.313852-8-ilya.lipnitskiy@gmail.com>
Date:   Tue, 13 Apr 2021 20:12:39 -0700
From:   Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sergey Ryazanov <ryazanov.s.a@...il.com>
Cc:     Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH v2 7/8] MIPS: pci-legacy: remove busn_resource field

No drivers set the busn_resource field in the pci_controller struct.
Commit 7ee214b540d9 ("MIPS: PCI: Remove unused busn_offset") almost
removed it over 3 years ago. Remove it for good to free up memory and
eliminate messages like:
  pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
---
 arch/mips/include/asm/pci.h | 1 -
 arch/mips/pci/pci-legacy.c  | 1 -
 2 files changed, 2 deletions(-)

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 6f48649201c5..9ffc8192adae 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -38,7 +38,6 @@ struct pci_controller {
 	struct resource *io_resource;
 	unsigned long io_offset;
 	unsigned long io_map_base;
-	struct resource *busn_resource;
 
 #ifndef CONFIG_PCI_DOMAINS_GENERIC
 	unsigned int index;
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index ec3f52ade72d..78c22987bef0 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -89,7 +89,6 @@ static void pcibios_scanbus(struct pci_controller *hose)
 				hose->mem_resource, hose->mem_offset);
 	pci_add_resource_offset(&resources,
 				hose->io_resource, hose->io_offset);
-	pci_add_resource(&resources, hose->busn_resource);
 	list_splice_init(&resources, &bridge->windows);
 	bridge->dev.parent = NULL;
 	bridge->sysdata = hose;
-- 
2.31.1