From: Rob Herring <robh@kernel.org>
Date: Thu, 9 Apr 2020 17:49:23 -0600
Subject: PCI: host-generic: Eliminate pci_host_common_probe wrappers
Git-commit: b2f75a41eaa6bfc4aa6f6a1faefbf21c2c8d1588
Patch-mainline: v5.8-rc1
References: bsc#1179344
Most ECAM host drivers are just different pci_ecam_ops which can be DT
match table data. That's already the case in some cases, but let's
do that for all the ECAM drivers. Then we can use
of_device_get_match_data() in pci_host_common_probe() and eliminate the
probe wrapper functions and use pci_host_common_probe() directly for
probe.
Link: https://lore.kernel.org/r/20200409234923.21598-4-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <amurray@thegoodpenguin.co.uk>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Robert Richter <rrichter@marvell.com>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
Cc: linux-pci@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/pci/controller/dwc/pcie-hisi.c | 11 +----------
drivers/pci/controller/pci-host-common.c | 9 +++++++--
drivers/pci/controller/pci-host-generic.c | 15 +--------------
drivers/pci/controller/pci-thunder-ecam.c | 12 +++++-------
drivers/pci/controller/pci-thunder-pem.c | 12 +++++-------
drivers/pci/controller/pcie-tango.c | 7 +++++--
include/linux/pci-ecam.h | 3 +--
7 files changed, 25 insertions(+), 44 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-hisi.c b/drivers/pci/controller/dwc/pcie-hisi.c
index 90017045334d..0ba50fb473b1 100644
--- a/drivers/pci/controller/dwc/pcie-hisi.c
+++ b/drivers/pci/controller/dwc/pcie-hisi.c
@@ -332,15 +332,6 @@ static struct platform_driver hisi_pcie_driver = {
};
builtin_platform_driver(hisi_pcie_driver);
-static int hisi_pcie_almost_ecam_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct pci_ecam_ops *ops;
-
- ops = (struct pci_ecam_ops *)of_device_get_match_data(dev);
- return pci_host_common_probe(pdev, ops);
-}
-
static int hisi_pcie_platform_init(struct pci_config_window *cfg)
{
struct device *dev = cfg->parent;
@@ -385,7 +376,7 @@ static const struct of_device_id hisi_pcie_almost_ecam_of_match[] = {
};
static struct platform_driver hisi_pcie_almost_ecam_driver = {
- .probe = hisi_pcie_almost_ecam_probe,
+ .probe = pci_host_common_probe,
.driver = {
.name = "hisi-pcie-almost-ecam",
.of_match_table = hisi_pcie_almost_ecam_of_match,
diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index 6d15bc12e726..953de57f6c57 100644
--- a/drivers/pci/controller/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
@@ -10,6 +10,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_address.h>
+#include <linux/of_device.h>
#include <linux/of_pci.h>
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
@@ -55,15 +56,19 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
return ERR_PTR(err);
}
-int pci_host_common_probe(struct platform_device *pdev,
- const struct pci_ecam_ops *ops)
+int pci_host_common_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct pci_host_bridge *bridge;
struct pci_config_window *cfg;
struct list_head resources;
+ const struct pci_ecam_ops *ops;
int ret;
+ ops = of_device_get_match_data(&pdev->dev);
+ if (!ops)
+ return -ENODEV;
+
bridge = devm_pci_alloc_host_bridge(dev, 0);
if (!bridge)
return -ENOMEM;
diff --git a/drivers/pci/controller/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
index fd8cff61de14..b51977abfdf1 100644
--- a/drivers/pci/controller/pci-host-generic.c
+++ b/drivers/pci/controller/pci-host-generic.c
@@ -11,8 +11,6 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_pci.h>
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
@@ -79,23 +77,12 @@ static const struct of_device_id gen_pci_of_match[] = {
};
MODULE_DEVICE_TABLE(of, gen_pci_of_match);
-static int gen_pci_probe(struct platform_device *pdev)
-{
- const struct of_device_id *of_id;
- struct pci_ecam_ops *ops;
-
- of_id = of_match_node(gen_pci_of_match, pdev->dev.of_node);
- ops = (struct pci_ecam_ops *)of_id->data;
-
- return pci_host_common_probe(pdev, ops);
-}
-
static struct platform_driver gen_pci_driver = {
.driver = {
.name = "pci-host-generic",
.of_match_table = gen_pci_of_match,
},
- .probe = gen_pci_probe,
+ .probe = pci_host_common_probe,
.remove = pci_host_common_remove,
};
module_platform_driver(gen_pci_driver);
diff --git a/drivers/pci/controller/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
index c3fdd3e6b21c..7e8835fee5f7 100644
--- a/drivers/pci/controller/pci-thunder-ecam.c
+++ b/drivers/pci/controller/pci-thunder-ecam.c
@@ -357,22 +357,20 @@ const struct pci_ecam_ops pci_thunder_ecam_ops = {
#ifdef CONFIG_PCI_HOST_THUNDER_ECAM
static const struct of_device_id thunder_ecam_of_match[] = {
- { .compatible = "cavium,pci-host-thunder-ecam" },
+ {
+ .compatible = "cavium,pci-host-thunder-ecam",
+ .data = &pci_thunder_ecam_ops,
+ },
{ },
};
-static int thunder_ecam_probe(struct platform_device *pdev)
-{
- return pci_host_common_probe(pdev, &pci_thunder_ecam_ops);
-}
-
static struct platform_driver thunder_ecam_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = thunder_ecam_of_match,
.suppress_bind_attrs = true,
},
- .probe = thunder_ecam_probe,
+ .probe = pci_host_common_probe,
};
builtin_platform_driver(thunder_ecam_driver);
diff --git a/drivers/pci/controller/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
index 2e792707ceab..3f847969143e 100644
--- a/drivers/pci/controller/pci-thunder-pem.c
+++ b/drivers/pci/controller/pci-thunder-pem.c
@@ -451,22 +451,20 @@ static const struct pci_ecam_ops pci_thunder_pem_ops = {
};
static const struct of_device_id thunder_pem_of_match[] = {
- { .compatible = "cavium,pci-host-thunder-pem" },
+ {
+ .compatible = "cavium,pci-host-thunder-pem",
+ .data = &pci_thunder_pem_ops,
+ },
{ },
};
-static int thunder_pem_probe(struct platform_device *pdev)
-{
- return pci_host_common_probe(pdev, &pci_thunder_pem_ops);
-}
-
static struct platform_driver thunder_pem_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = thunder_pem_of_match,
.suppress_bind_attrs = true,
},
- .probe = thunder_pem_probe,
+ .probe = pci_host_common_probe,
};
builtin_platform_driver(thunder_pem_driver);
diff --git a/drivers/pci/controller/pcie-tango.c b/drivers/pci/controller/pcie-tango.c
index 3b2b10906fdd..c13367c30fc6 100644
--- a/drivers/pci/controller/pcie-tango.c
+++ b/drivers/pci/controller/pcie-tango.c
@@ -295,11 +295,14 @@ static int tango_pcie_probe(struct platform_device *pdev)
spin_lock_init(&pcie->used_msi_lock);
irq_set_chained_handler_and_data(virq, tango_msi_isr, pcie);
- return pci_host_common_probe(pdev, &smp8759_ecam_ops);
+ return pci_host_common_probe(pdev);
}
static const struct of_device_id tango_pcie_ids[] = {
- { .compatible = "sigma,smp8759-pcie" },
+ {
+ .compatible = "sigma,smp8759-pcie",
+ .data = &smp8759_ecam_ops,
+ },
{ },
};
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index fd0edb8b8a00..1af5cb02ef7f 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -61,8 +61,7 @@ extern const struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */
#if IS_ENABLED(CONFIG_PCI_HOST_COMMON)
/* for DT-based PCI controllers that support ECAM */
-int pci_host_common_probe(struct platform_device *pdev,
- const struct pci_ecam_ops *ops);
+int pci_host_common_probe(struct platform_device *pdev);
int pci_host_common_remove(struct platform_device *pdev);
#endif
#endif
--
2.26.2