linux-kernel - [PATCH part3 v12 06/10] PCI: Make pci_host

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Date:	Mon, 20 Jul 2015 20:01:14 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	<linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>, <dja@...ens.net>,
	<linux-xtensa@...ux-xtensa.org>, <x86@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	<linux-mips@...ux-mips.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-s390@...r.kernel.org>,
	Tony Luck <tony.luck@...el.com>, <linux-ia64@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	<linux-alpha@...r.kernel.org>, <linux-m68k@...ts.linux-m68k.org>,
	<linux-am33-list@...hat.com>, Liviu Dudau <liviu@...au.co.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Yijing Wang <wangyijing@...wei.com>
Subject: [PATCH part3 v12 06/10] PCI: Make pci_host_bridge hold sysdata in drvdata

Now platform specific sysdata is saved in pci_bus,
and pcibios_root_bridge_prepare() need to know
the sysdata. Later, we would move pcibios_root_bridge_prepare()
prior to root bus creation, so we need to make
pci_host_bridge hold sysdata.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 arch/ia64/pci/pci.c |    2 +-
 arch/x86/pci/acpi.c |    2 +-
 drivers/pci/probe.c |    1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 67ffe1f..8f79852 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -485,7 +485,7 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
 	 * that case.
 	 */
 	if (!bridge->dev.parent) {
-		struct pci_controller *controller = bridge->bus->sysdata;
+		struct pci_controller *controller = dev_get_drvdata(&bridge->dev);
 		ACPI_COMPANION_SET(&bridge->dev, controller->companion);
 	}
 	return 0;
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 629fc3b..38ce348 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -502,7 +502,7 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
 	 * that case.
 	 */
 	if (!bridge->dev.parent) {
-		struct pci_sysdata *sd = bridge->bus->sysdata;
+		struct pci_sysdata *sd = dev_get_drvdata(&bridge->dev);
 		ACPI_COMPANION_SET(&bridge->dev, sd->companion);
 	}
 	return 0;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0eba126..0ae8bf2 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1967,6 +1967,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int domain,
 	bridge->domain = domain;
 	bridge->dev.parent = parent;
 	bridge->dev.release = pci_release_host_bridge_dev;
+	dev_set_drvdata(&bridge->dev, sysdata);
 	dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
 	error = pcibios_root_bridge_prepare(bridge);
 	if (error) {
-- 
1.7.1

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