USB: rndis: switch to seq_files

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 25 insertions, 28 deletions

diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 20b15fcc9d49..d252015576fb 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -28,6 +28,7 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/netdevice.h>
 
 #include <asm/io.h>
@@ -1294,14 +1295,11 @@ int rndis_rm_hdr(struct sk_buff *skb)
 
 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
 
-static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
-                void *data)
+static int rndis_proc_show(struct seq_file *m, void *v)
 {
-        char *out = page;
-        int len;
-        rndis_params *param = (rndis_params *) data;
+        rndis_params *param = m->private;
 
-        out += snprintf (out, count,
+        seq_printf(m,
                          "Config Nr. %d\n"
                          "used      : %s\n"
                          "state     : %s\n"
@@ -1324,25 +1322,13 @@ static int rndis_proc_read (char *page, char **start, off_t off, int count, int
                          (param->media_state) ? 0 : param->speed*100,
                          (param->media_state) ? "disconnected" : "connected",
                          param->vendorID, param->vendorDescr);
-
-        len = out - page;
-        len -= off;
-
-        if (len < count) {
-                *eof = 1;
-                if (len <= 0)
-                        return 0;
-        } else
-                len = count;
-
-        *start = page + off;
-        return len;
+        return 0;
 }
 
-static int rndis_proc_write (struct file *file, const char __user *buffer,
-                unsigned long count, void *data)
+static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
+                size_t count, loff_t *ppos)
 {
-        rndis_params *p = data;
+        rndis_params *p = PDE(file->f_path.dentry->d_inode)->data;
         u32 speed = 0;
         int i, fl_speed = 0;
 
@@ -1384,6 +1370,20 @@ static int rndis_proc_write (struct file *file, const char __user *buffer,
         return count;
 }
 
+static int rndis_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, rndis_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations rndis_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = rndis_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = rndis_proc_write,
+};
+
 #define NAME_TEMPLATE   "driver/rndis-%03d"
 
 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
@@ -1401,7 +1401,9 @@ int __init rndis_init (void)
 
                 sprintf (name, NAME_TEMPLATE, i);
                 if (!(rndis_connect_state [i]
-                                = create_proc_entry (name, 0660, NULL)))
+                                = proc_create_data(name, 0660, NULL,
+                                        &rndis_proc_fops,
+                                        (void *)(rndis_per_dev_params + i))))
                 {
                         DBG("%s :remove entries", __func__);
                         while (i) {
@@ -1411,11 +1413,6 @@ int __init rndis_init (void)
                         DBG("\n");
                         return -EIO;
                 }
-
-                rndis_connect_state [i]->write_proc = rndis_proc_write;
-                rndis_connect_state [i]->read_proc = rndis_proc_read;
-                rndis_connect_state [i]->data = (void *)
-                                (rndis_per_dev_params + i);
 #endif
                 rndis_per_dev_params [i].confignr = i;
                 rndis_per_dev_params [i].used = 0;