[PATCH] USB: allow multiple types of EHCI controllers to be built as modules
In some systems we may have both a platform EHCI controller and PCI EHCI
controller. Previously we couldn't build the EHCI support as a module due
to conflicting module_init() calls in the code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index 63eadee..0e444ab 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -272,6 +272,8 @@
return 0;
}
*/
+MODULE_ALIAS("au1xxx-ehci");
+/* FIXME use "struct platform_driver" */
static struct device_driver ehci_hcd_au1xxx_driver = {
.name = "au1xxx-ehci",
.bus = &platform_bus_type,
@@ -280,18 +282,3 @@
/*.suspend = ehci_hcd_au1xxx_drv_suspend, */
/*.resume = ehci_hcd_au1xxx_drv_resume, */
};
-
-static int __init ehci_hcd_au1xxx_init(void)
-{
- pr_debug(DRIVER_INFO " (Au1xxx)\n");
-
- return driver_register(&ehci_hcd_au1xxx_driver);
-}
-
-static void __exit ehci_hcd_au1xxx_cleanup(void)
-{
- driver_unregister(&ehci_hcd_au1xxx_driver);
-}
-
-module_init(ehci_hcd_au1xxx_init);
-module_exit(ehci_hcd_au1xxx_cleanup);
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index f985f121..a49a689 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -324,43 +324,12 @@
return 0;
}
-static struct platform_driver ehci_fsl_dr_driver = {
+MODULE_ALIAS("fsl-ehci");
+
+static struct platform_driver ehci_fsl_driver = {
.probe = ehci_fsl_drv_probe,
.remove = ehci_fsl_drv_remove,
.driver = {
- .name = "fsl-usb2-dr",
+ .name = "fsl-ehci",
},
};
-
-static struct platform_driver ehci_fsl_mph_driver = {
- .probe = ehci_fsl_drv_probe,
- .remove = ehci_fsl_drv_remove,
- .driver = {
- .name = "fsl-usb2-mph",
- },
-};
-
-static int __init ehci_fsl_init(void)
-{
- int retval;
-
- pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
- hcd_name,
- sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
- sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
-
- retval = platform_driver_register(&ehci_fsl_dr_driver);
- if (retval)
- return retval;
-
- return platform_driver_register(&ehci_fsl_mph_driver);
-}
-
-static void __exit ehci_fsl_cleanup(void)
-{
- platform_driver_unregister(&ehci_fsl_mph_driver);
- platform_driver_unregister(&ehci_fsl_dr_driver);
-}
-
-module_init(ehci_fsl_init);
-module_exit(ehci_fsl_cleanup);
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 79f2d8b..7d7c97c 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -889,19 +889,59 @@
#ifdef CONFIG_PCI
#include "ehci-pci.c"
-#define EHCI_BUS_GLUED
+#define PCI_DRIVER ehci_pci_driver
#endif
#ifdef CONFIG_PPC_83xx
#include "ehci-fsl.c"
-#define EHCI_BUS_GLUED
+#define PLATFORM_DRIVER ehci_fsl_driver
#endif
#ifdef CONFIG_SOC_AU1X00
#include "ehci-au1xxx.c"
-#define EHCI_BUS_GLUED
+#define PLATFORM_DRIVER ehci_hcd_au1xxx_driver
#endif
-#ifndef EHCI_BUS_GLUED
+#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER)
#error "missing bus glue for ehci-hcd"
#endif
+
+static int __init ehci_hcd_init(void)
+{
+ int retval = 0;
+
+ pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
+ hcd_name,
+ sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
+ sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
+
+#ifdef PLATFORM_DRIVER
+ retval = platform_driver_register(&PLATFORM_DRIVER);
+ if (retval < 0)
+ return retval;
+#endif
+
+#ifdef PCI_DRIVER
+ retval = pci_register_driver(&PCI_DRIVER);
+ if (retval < 0) {
+#ifdef PLATFORM_DRIVER
+ platform_driver_unregister(&PLATFORM_DRIVER);
+#endif
+ }
+#endif
+
+ return retval;
+}
+module_init(ehci_hcd_init);
+
+static void __exit ehci_hcd_cleanup(void)
+{
+#ifdef PLATFORM_DRIVER
+ platform_driver_unregister(&PLATFORM_DRIVER);
+#endif
+#ifdef PCI_DRIVER
+ pci_unregister_driver(&PCI_DRIVER);
+#endif
+}
+module_exit(ehci_hcd_cleanup);
+
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 648ddb5..cadffac 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -379,23 +379,3 @@
.resume = usb_hcd_pci_resume,
#endif
};
-
-static int __init ehci_hcd_pci_init(void)
-{
- if (usb_disabled())
- return -ENODEV;
-
- pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
- hcd_name,
- sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
- sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
-
- return pci_register_driver(&ehci_pci_driver);
-}
-module_init(ehci_hcd_pci_init);
-
-static void __exit ehci_hcd_pci_cleanup(void)
-{
- pci_unregister_driver(&ehci_pci_driver);
-}
-module_exit(ehci_hcd_pci_cleanup);