[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-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);
+