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Message-ID: <1424914187-21027-3-git-send-email-wangyijing@huawei.com>
Date: Thu, 26 Feb 2015 09:29:19 +0800
From: Yijing Wang <wangyijing@...wei.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
CC: Jiang Liu <jiang.liu@...ux.intel.com>, <linux-pci@...r.kernel.org>,
Yinghai Lu <yinghai@...nel.org>,
<linux-kernel@...r.kernel.org>,
Marc Zyngier <marc.zyngier@....com>,
<linux-arm-kernel@...ts.infradead.org>,
Russell King <linux@....linux.org.uk>, <x86@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Rusty Russell <rusty@...tcorp.com.au>,
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>, Liviu Dudau <liviu@...au.co.uk>,
"Arnd Bergmann" <arnd@...db.de>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
"Yijing Wang" <wangyijing@...wei.com>,
Richard Henderson <rth@...ddle.net>,
"Ivan Kokshaysky" <ink@...assic.park.msu.ru>,
Matt Turner <mattst88@...il.com>,
David Howells <dhowells@...hat.com>,
Michal Simek <monstr@...str.eu>,
"Ralf Baechle" <ralf@...ux-mips.org>,
Koichi Yasutake <yasutake.koichi@...panasonic.com>,
Sebastian Ott <sebott@...ux.vnet.ibm.com>,
Chris Metcalf <cmetcalf@...hip.com>,
"Chris Zankel" <chris@...kel.net>,
Max Filippov <jcmvbkbc@...il.com>, <linux-mips@...ux-mips.org>,
<linux-am33-list@...hat.com>, <linux-s390@...r.kernel.org>,
<linux-sh@...r.kernel.org>, <sparclinux@...r.kernel.org>,
<linux-xtensa@...ux-xtensa.org>
Subject: [PATCH v3 02/30] PCI: Rip out pci_bus_add_devices() from pci_scan_root_bus()
Just like pci_scan_bus(), we also should rip out
pci_bus_add_devices() from pci_scan_root_bus().
Lots platforms first call pci_scan_root_bus(), but
after that, they call pci_bus_size_bridges() and
pci_bus_assign_resources(). Place pci_bus_add_devices()
in pci_scan_root_bus() hurts PCI scan logic.
For arm hw_pci->scan() functions which call
pci_scan_root_bus(), it's no need to change anything,
because pci_bus_add_devices() will be called later
in pci_common_init_dev().
Signed-off-by: Yijing Wang <wangyijing@...wei.com>
CC: Richard Henderson <rth@...ddle.net>
CC: Ivan Kokshaysky <ink@...assic.park.msu.ru>
CC: Matt Turner <mattst88@...il.com>
CC: David Howells <dhowells@...hat.com>
CC: Tony Luck <tony.luck@...el.com>
CC: Michal Simek <monstr@...str.eu>
CC: Ralf Baechle <ralf@...ux-mips.org>
CC: Koichi Yasutake <yasutake.koichi@...panasonic.com>
CC: Sebastian Ott <sebott@...ux.vnet.ibm.com>
CC: "David S. Miller" <davem@...emloft.net>
CC: Chris Metcalf <cmetcalf@...hip.com>
CC: Chris Zankel <chris@...kel.net>
CC: Max Filippov <jcmvbkbc@...il.com>
CC: Thomas Gleixner <tglx@...utronix.de>
CC: linux-alpha@...r.kernel.org
CC: linux-kernel@...r.kernel.org
CC: linux-mips@...ux-mips.org
CC: linux-am33-list@...hat.com
CC: linux-s390@...r.kernel.org
CC: linux-sh@...r.kernel.org
CC: sparclinux@...r.kernel.org
CC: linux-xtensa@...ux-xtensa.org
---
arch/alpha/kernel/pci.c | 2 ++
arch/frv/mb93090-mb00/pci-vdk.c | 6 ++++--
arch/ia64/sn/kernel/io_init.c | 1 +
arch/microblaze/pci/pci-common.c | 1 +
arch/mips/pci/pci.c | 1 +
arch/mn10300/unit-asb2305/pci.c | 5 ++++-
arch/s390/pci/pci.c | 2 +-
arch/sh/drivers/pci/pci.c | 1 +
arch/sparc/kernel/leon_pci.c | 1 +
arch/tile/kernel/pci.c | 2 ++
arch/tile/kernel/pci_gx.c | 2 ++
arch/x86/pci/common.c | 1 +
arch/xtensa/kernel/pci.c | 2 ++
drivers/pci/probe.c | 1 -
14 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 98a1525..518b767 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -338,6 +338,8 @@ common_init_pci(void)
bus = pci_scan_root_bus(NULL, next_busno, alpha_mv.pci_ops,
hose, &resources);
+ if (bus)
+ pci_bus_add_devices(bus);
hose->bus = bus;
hose->need_domain_info = need_domain_info;
next_busno = bus->busn_res.end + 1;
diff --git a/arch/frv/mb93090-mb00/pci-vdk.c b/arch/frv/mb93090-mb00/pci-vdk.c
index b073f4d..4b63781 100644
--- a/arch/frv/mb93090-mb00/pci-vdk.c
+++ b/arch/frv/mb93090-mb00/pci-vdk.c
@@ -316,6 +316,7 @@ void pcibios_fixup_bus(struct pci_bus *bus)
int __init pcibios_init(void)
{
+ struct pci_bus *bus;
struct pci_ops *dir = NULL;
LIST_HEAD(resources);
@@ -383,12 +384,13 @@ int __init pcibios_init(void)
printk("PCI: Probing PCI hardware\n");
pci_add_resource(&resources, &pci_ioport_resource);
pci_add_resource(&resources, &pci_iomem_resource);
- pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
+ bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
pcibios_irq_init();
pcibios_fixup_irqs();
pcibios_resource_survey();
-
+ if (bus)
+ pci_bus_add_devices(bus);
return 0;
}
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 0b5ce82..63b43a6 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -272,6 +272,7 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
kfree(res);
kfree(controller);
}
+ pci_bus_add_devices(bus);
}
/*
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 48528fb..d8bbad9 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1362,6 +1362,7 @@ static void pcibios_scan_phb(struct pci_controller *hose)
hose->bus = bus;
hose->last_busno = bus->busn_res.end;
+ pci_bus_add_devices(bus);
}
static int __init pcibios_init(void)
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 1bf60b1..9eb54b5 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -114,6 +114,7 @@ static void pcibios_scanbus(struct pci_controller *hose)
pci_bus_size_bridges(bus);
pci_bus_assign_resources(bus);
}
+ pci_bus_add_devices(bus);
}
}
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index 613ca1e..2a815c1 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -340,6 +340,7 @@ void pcibios_fixup_bus(struct pci_bus *bus)
*/
static int __init pcibios_init(void)
{
+ struct pci_bus *bus;
resource_size_t io_offset, mem_offset;
LIST_HEAD(resources);
@@ -371,11 +372,13 @@ static int __init pcibios_init(void)
pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
- pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
+ bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
pcibios_irq_init();
pcibios_fixup_irqs();
pcibios_resource_survey();
+ if (bus)
+ pci_bus_add_devices(bus);
return 0;
}
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 753a567..1534e5a 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -776,7 +776,7 @@ static int zpci_scan_bus(struct zpci_dev *zdev)
zpci_cleanup_bus_resources(zdev);
return -EIO;
}
-
+ pci_bus_add_devices(zdev->bus);
zdev->bus->max_bus_speed = zdev->max_bus_speed;
return 0;
}
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 1bc09ee..efc1051 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -69,6 +69,7 @@ static void pcibios_scanbus(struct pci_channel *hose)
pci_bus_size_bridges(bus);
pci_bus_assign_resources(bus);
+ pci_bus_add_devices(bus);
} else {
pci_free_resource_list(&resources);
}
diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c
index 899b720..2971076 100644
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -40,6 +40,7 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
/* Assign devices with resources */
pci_assign_unassigned_resources();
+ pci_bus_add_devices(root_bus);
} else {
pci_free_resource_list(&resources);
}
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 325df47..9475a74 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -339,6 +339,8 @@ int __init pcibios_init(void)
struct pci_bus *next_bus;
struct pci_dev *dev;
+ pci_bus_add_devices(root_bus);
+
list_for_each_entry(dev, &root_bus->devices, bus_list) {
/*
* Find the PCI host controller, ie. the 1st
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index 2c95f37..d7a0729 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -916,6 +916,8 @@ int __init pcibios_init(void)
/* Configure the max_payload_size values for this domain. */
fixup_read_and_payload_sizes(controller);
+ pci_bus_add_devices(root_bus);
+
/* Alloc a PIO region for PCI memory access for each RC port. */
ret = gxio_trio_alloc_pio_regions(trio_context, 1, 0, 0);
if (ret < 0) {
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 3d2612b..0cbc723 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -491,6 +491,7 @@ void pcibios_scan_root(int busnum)
pci_free_resource_list(&resources);
kfree(sd);
}
+ pci_bus_add_devices(bus);
}
void __init pcibios_set_cache_line_size(void)
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 5b34033..f2ae64e 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -185,6 +185,8 @@ static int __init pcibios_init(void)
pci_controller_apertures(pci_ctrl, &resources);
bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno,
pci_ctrl->ops, pci_ctrl, &resources);
+ if (bus)
+ pci_bus_add_devices(bus);
pci_ctrl->bus = bus;
pci_ctrl->last_busno = bus->busn_res.end;
if (next_busno <= pci_ctrl->last_busno)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 88604f2..8ef0375 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2087,7 +2087,6 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
if (!found)
pci_bus_update_busn_res_end(b, max);
- pci_bus_add_devices(b);
return b;
}
EXPORT_SYMBOL(pci_scan_root_bus);
--
1.7.1
--
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