Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull VFS updates from Al Viro,

Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).

7kloc removed.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
  don't bother with deferred freeing of fdtables
  proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
  proc: Make the PROC_I() and PDE() macros internal to procfs
  proc: Supply a function to remove a proc entry by PDE
  take cgroup_open() and cpuset_open() to fs/proc/base.c
  ppc: Clean up scanlog
  ppc: Clean up rtas_flash driver somewhat
  hostap: proc: Use remove_proc_subtree()
  drm: proc: Use remove_proc_subtree()
  drm: proc: Use minor->index to label things, not PDE->name
  drm: Constify drm_proc_list[]
  zoran: Don't print proc_dir_entry data in debug
  reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
  proc: Supply an accessor for getting the data from a PDE's parent
  airo: Use remove_proc_subtree()
  rtl8192u: Don't need to save device proc dir PDE
  rtl8187se: Use a dir under /proc/net/r8180/
  proc: Add proc_mkdir_data()
  proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
  proc: Move PDE_NET() to fs/proc/proc_net.c
  ...

1 files changed, 20 insertions, 43 deletions

diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 2161af8..3a3fdc5 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -46,6 +46,7 @@
  */
 #undef __NO_VERSION__
 
+#include <linux/file.h>
 #include "device.h"
 #include "card.h"
 #include "baseband.h"
@@ -1273,53 +1274,29 @@ static int Config_FileGetParameter(unsigned char *string,
 /* if read fails, return NULL, or return data pointer */
 static unsigned char *Config_FileOperation(struct vnt_private *pDevice)
 {
-    unsigned char *config_path = CONFIG_PATH;
-    unsigned char *buffer = NULL;
-    struct file   *filp=NULL;
-    mm_segment_t old_fs = get_fs();
+	unsigned char *buffer = kmalloc(1024, GFP_KERNEL);
+	struct file   *file;
 
-    int result = 0;
-
-    set_fs (KERNEL_DS);
-
-    /* open file */
-      filp = filp_open(config_path, O_RDWR, 0);
-        if (IS_ERR(filp)) {
-	     printk("Config_FileOperation file Not exist\n");
-	     result=-1;
-             goto error2;
-	  }
-
-     if(!(filp->f_op) || !(filp->f_op->read) ||!(filp->f_op->write)) {
-           printk("file %s is not read or writeable?\n",config_path);
-	  result = -1;
-	  goto error1;
-     	}
-
-    buffer = kmalloc(1024, GFP_KERNEL);
-    if(buffer==NULL) {
-      printk("allocate mem for file fail?\n");
-      result = -1;
-      goto error1;
-    }
-
-    if(filp->f_op->read(filp, buffer, 1024, &filp->f_pos)<0) {
-     printk("read file error?\n");
-     result = -1;
-    }
+	if (!buffer) {
+		printk("allocate mem for file fail?\n");
+		return NULL;
+	}
 
-error1:
-  if(filp_close(filp,NULL))
-       printk("Config_FileOperation:close file fail\n");
+	file = filp_open(CONFIG_PATH, O_RDONLY, 0);
+	if (IS_ERR(file)) {
+		kfree(buffer);
+		printk("Config_FileOperation file Not exist\n");
+		return NULL;
+	}
 
-error2:
-  set_fs (old_fs);
+	if (kernel_read(file, 0, buffer, 1024) < 0) {
+		printk("read file error?\n");
+		kfree(buffer);
+		buffer = NULL;
+	}
 
-if(result!=0) {
-    kfree(buffer);
-    buffer=NULL;
-}
-  return buffer;
+	fput(file);
+	return buffer;
 }
 
 /* return --->-1:fail; >=0:successful */