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path: root/drivers/usb/host/ehci-hcd.c
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Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 5f2d74ed5ad..264182654f4 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -33,6 +33,7 @@
#include <linux/usb.h>
#include <linux/moduleparam.h>
#include <linux/dma-mapping.h>
+#include <linux/debugfs.h>
#include "../core/hcd.h"
@@ -978,15 +979,30 @@ static int __init ehci_hcd_init(void)
sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
+#ifdef DEBUG
+ ehci_debug_root = debugfs_create_dir("ehci", NULL);
+ if (!ehci_debug_root)
+ return -ENOENT;
+#endif
+
#ifdef PLATFORM_DRIVER
retval = platform_driver_register(&PLATFORM_DRIVER);
- if (retval < 0)
+ if (retval < 0) {
+#ifdef DEBUG
+ debugfs_remove(ehci_debug_root);
+ ehci_debug_root = NULL;
+#endif
return retval;
+ }
#endif
#ifdef PCI_DRIVER
retval = pci_register_driver(&PCI_DRIVER);
if (retval < 0) {
+#ifdef DEBUG
+ debugfs_remove(ehci_debug_root);
+ ehci_debug_root = NULL;
+#endif
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
#endif
@@ -997,6 +1013,10 @@ static int __init ehci_hcd_init(void)
#ifdef PS3_SYSTEM_BUS_DRIVER
retval = ps3_ehci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
if (retval < 0) {
+#ifdef DEBUG
+ debugfs_remove(ehci_debug_root);
+ ehci_debug_root = NULL;
+#endif
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
#endif
@@ -1022,6 +1042,9 @@ static void __exit ehci_hcd_cleanup(void)
#ifdef PS3_SYSTEM_BUS_DRIVER
ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
#endif
+#ifdef DEBUG
+ debugfs_remove(ehci_debug_root);
+#endif
}
module_exit(ehci_hcd_cleanup);