USB: convert ehci debug files to use debugfs instead of sysfs

We should not have multiple line files in sysfs, this moves the data to
debugfs instead, like the UHCI driver.

Signed-off-by: Tony Jones <tonyj@suse.de>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 24 insertions, 1 deletions

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 5f2d74ed5ad7..264182654f4c 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);