From: Jan Kiszka <jan.kiszka@siemens.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>,
Will Deacon <will.deacon@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Subject: [PATCH v4 7/8] PCI: Add support for unbinding the generic PCI host controller
Date: Tue, 15 May 2018 11:07:06 +0200 [thread overview]
Message-ID: <a51dada82fa9d873dfa66cfb1654bafefb5054c8.1526375226.git.jan.kiszka@siemens.com> (raw)
In-Reply-To: <cover.1526375226.git.jan.kiszka@siemens.com>
In-Reply-To: <cover.1526375226.git.jan.kiszka@siemens.com>
From: Jan Kiszka <jan.kiszka@siemens.com>
Particularly useful when working in virtual environments where the
controller may come and go, but possibly not only there.
CC: Will Deacon <will.deacon@arm.com>
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
drivers/pci/host/pci-host-common.c | 13 +++++++++++++
drivers/pci/host/pci-host-generic.c | 1 +
include/linux/pci-ecam.h | 1 +
3 files changed, 15 insertions(+)
diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/host/pci-host-common.c
index 5d028f53fdcd..d8f10451f273 100644
--- a/drivers/pci/host/pci-host-common.c
+++ b/drivers/pci/host/pci-host-common.c
@@ -101,5 +101,18 @@ int pci_host_common_probe(struct platform_device *pdev,
return ret;
}
+ platform_set_drvdata(pdev, bridge->bus);
+ return 0;
+}
+
+int pci_host_common_remove(struct platform_device *pdev)
+{
+ struct pci_bus *bus = platform_get_drvdata(pdev);
+
+ pci_lock_rescan_remove();
+ pci_stop_root_bus(bus);
+ pci_remove_root_bus(bus);
+ pci_unlock_rescan_remove();
+
return 0;
}
diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
index 45319ee3b484..dea3ec7592a2 100644
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/host/pci-host-generic.c
@@ -95,5 +95,6 @@ static struct platform_driver gen_pci_driver = {
.suppress_bind_attrs = true,
},
.probe = gen_pci_probe,
+ .remove = pci_host_common_remove,
};
builtin_platform_driver(gen_pci_driver);
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index baadad1aabbc..29efa09d686b 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -62,5 +62,6 @@ extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
/* for DT-based PCI controllers that support ECAM */
int pci_host_common_probe(struct platform_device *pdev,
struct pci_ecam_ops *ops);
+int pci_host_common_remove(struct platform_device *pdev);
#endif
#endif
--
2.13.6
next prev parent reply other threads:[~2018-05-15 9:08 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-15 9:06 [PATCH v4 0/8] PCI: leak fixes, removable generic PCI host, assorted stuff Jan Kiszka
2018-05-15 9:07 ` [PATCH v4 1/8] PCI: Make pci_get_new_domain_nr() static Jan Kiszka
2018-05-15 9:07 ` [PATCH v4 2/8] PCI: Fix memory leak of devm_pci_alloc_host_bridge() Jan Kiszka
2018-05-15 9:07 ` [PATCH v4 3/8] PCI: Rename device node parameter of of_pci_get_host_bridge_resources() Jan Kiszka
2018-05-15 10:04 ` Vladimir Zapolskiy
2018-05-15 9:07 ` [PATCH v4 4/8] PCI: Replace dev_node parameter of of_pci_get_host_bridge_resources with device Jan Kiszka
2018-05-15 10:05 ` Vladimir Zapolskiy
2018-05-15 15:34 ` Jingoo Han
2018-05-28 10:00 ` Vladimir Zapolskiy
2018-05-28 10:46 ` Jan Kiszka
2018-05-29 13:20 ` Bjorn Helgaas
2018-05-15 9:07 ` [PATCH v4 5/8] PCI: Replace pr_*() with dev_*() in of_pci_get_host_bridge_resources() Jan Kiszka
2018-05-15 10:05 ` Vladimir Zapolskiy
2018-05-15 9:07 ` [PATCH v4 6/8] PCI: Rework of_pci_get_host_bridge_resources() to devm_of_pci_get_host_bridge_resources() Jan Kiszka
2018-05-15 10:06 ` Vladimir Zapolskiy
2018-05-15 14:28 ` Joao Pinto
2018-05-15 15:31 ` Jingoo Han
2018-05-15 16:48 ` Andy Shevchenko
2018-05-15 16:50 ` Andy Shevchenko
2018-05-16 12:31 ` [PATCH] PCI: Clean up resource allocation in devm_of_pci_get_host_bridge_resources() Jan Kiszka
2018-05-17 6:23 ` Vladimir Zapolskiy
2018-06-05 16:26 ` Andy Shevchenko
2018-06-05 20:44 ` Bjorn Helgaas
2018-06-29 23:30 ` Bjorn Helgaas
2018-05-15 9:07 ` Jan Kiszka [this message]
2018-05-15 9:07 ` [PATCH v4 8/8] PCI: Enable PCI_DOMAINS along with generic PCI host controller Jan Kiszka
2018-05-15 19:00 ` [PATCH v4 0/8] PCI: leak fixes, removable generic PCI host, assorted stuff Bjorn Helgaas
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