staging: ft1000: Convert char device to debugfs.

Character device was used only for debugging purposes.
Convert it to debugfs functionality. For every plugged device
create new directory with one file.

Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
index 1aec926..1238b77 100644 (file)
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
@@ -37,7 +37,7 @@
 #include <linux/kmod.h>
 #include <linux/ioctl.h>
 #include <linux/unistd.h>
-
+#include <linux/debugfs.h>
 #include "ft1000_usb.h"
 //#include "ft1000_ioctl.h"
 
@@ -156,9 +156,11 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
        struct ft1000_info *info = netdev_priv(dev->net);
     int result;
     int i;
+       struct dentry *dir, *file;
+       struct ft1000_debug_dirs *tmp;
 
     // make a new device name
-    sprintf(info->DeviceName, "%s%d", "FT100", info->CardNumber);
+    sprintf(info->DeviceName, "%s%d", "FT1000_", info->CardNumber);
 
     DEBUG("ft1000_CreateDevice: number of instance = %d\n", ft1000_flarion_cnt);
     DEBUG("DeviceCreated = %x\n", info->DeviceCreated);
@@ -179,21 +181,31 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
     DEBUG("ft1000_CreateDevice: \"%s\" device registration\n", info->DeviceName);
     info->DeviceMajor = 0;
 
-    result = register_chrdev(info->DeviceMajor, info->DeviceName, &ft1000fops);
-    if (result < 0)
-    {
-       DEBUG("ft1000_CreateDevice: unable to get major %d\n", info->DeviceMajor);
-       return result;
-    }
+       tmp = kmalloc(sizeof(struct ft1000_debug_dirs), GFP_KERNEL);
+       if (tmp == NULL) {
+               result = -1;
+               goto fail;
+       }
 
-    DEBUG("ft1000_CreateDevice: registered char device \"%s\"\n", info->DeviceName);
+       dir = debugfs_create_dir(info->DeviceName, 0);
+       if (IS_ERR(dir)) {
+               result = PTR_ERR(dir);
+               goto debug_dir_fail;
+       }
 
-    // save a dynamic device major number
-    if (info->DeviceMajor == 0)
-    {
-       info->DeviceMajor = result;
-       DEBUG("ft1000_PcdCreateDevice: device major = %d\n", info->DeviceMajor);
-    }
+       file = debugfs_create_file("device", S_IRUGO | S_IWUGO, dir,
+                                       NULL, &ft1000fops);
+       if (IS_ERR(file)) {
+               result = PTR_ERR(file);
+               goto debug_file_fail;
+       }
+
+       tmp->dent = dir;
+       tmp->file = file;
+       tmp->int_number = info->CardNumber;
+       list_add(&(tmp->list), &(info->nodes.list));
+
+    DEBUG("ft1000_CreateDevice: registered char device \"%s\"\n", info->DeviceName);
 
     // initialize application information
 
@@ -243,7 +255,14 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
     info->DeviceCreated = TRUE;
     ft1000_flarion_cnt++;
 
-    return result;
+       return 0;
+
+debug_file_fail:
+       debugfs_remove(dir);
+debug_dir_fail:
+       kfree(tmp);
+fail:
+       return result;
 }
 
 //---------------------------------------------------------------------------
@@ -259,10 +278,11 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
 void ft1000_DestroyDevice(struct net_device *dev)
 {
        struct ft1000_info *info = netdev_priv(dev);
-    int result = 0;
                int i;
        struct dpram_blk *pdpram_blk;
        struct dpram_blk *ptr;
+       struct list_head *pos, *q;
+       struct ft1000_debug_dirs *dir;
 
     DEBUG("ft1000_chdev:ft1000_DestroyDevice called\n");
 
@@ -271,9 +291,17 @@ void ft1000_DestroyDevice(struct net_device *dev)
     if (info->DeviceCreated)
        {
         ft1000_flarion_cnt--;
-               unregister_chrdev(info->DeviceMajor, info->DeviceName);
-               DEBUG("ft1000_DestroyDevice: unregistered device \"%s\", result = %d\n",
-                                          info->DeviceName, result);
+               list_for_each_safe(pos, q, &info->nodes.list) {
+                       dir = list_entry(pos, struct ft1000_debug_dirs, list);
+                       if (dir->int_number == info->CardNumber) {
+                               debugfs_remove(dir->file);
+                               debugfs_remove(dir->dent);
+                               list_del(pos);
+                               kfree(dir);
+                       }
+               }
+               DEBUG("ft1000_DestroyDevice: unregistered device \"%s\"\n",
+                                          info->DeviceName);
 
         // Make sure we free any memory reserve for slow Queue
         for (i=0; i<MAX_NUM_APP; i++) {

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
index 1ca01e2..22536da 100644 (file)
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
@@ -851,6 +851,7 @@ u16 init_ft1000_netdev(struct ft1000_device *ft1000dev)
 
     INIT_LIST_HEAD(&pInfo->prov_list);
 
+       INIT_LIST_HEAD(&pInfo->nodes.list);
 //mbelian
 #ifdef HAVE_NET_DEVICE_OPS
        netdev->netdev_ops = &ftnet_ops;

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
index a07db26..5bead63 100644 (file)
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
@@ -473,6 +473,13 @@ struct ft1000_device
 //     struct net_device_stats stats; //mbelian
 } __attribute__ ((packed));
 
+struct ft1000_debug_dirs {
+       struct list_head list;
+       struct dentry *dent;
+       struct dentry *file;
+       int int_number;
+};
+
 struct ft1000_info {
     struct ft1000_device *pFt1000Dev;
     struct net_device_stats stats;
@@ -508,6 +515,7 @@ struct ft1000_info {
     u8 CardNumber;
     u8 DeviceName[15];
     int DeviceMajor;
+    struct ft1000_debug_dirs nodes;
     int registered;
     int mediastate;
     int dhcpflg;