usb: use non-racy method for proc entries creation

Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 5 insertions, 23 deletions

diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 9b913afb2e6..274c60a970c 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -231,6 +231,7 @@ static int proc_udc_open(struct inode *inode, struct file *file)
 }
 
 static const struct file_operations proc_ops = {
+        .owner          = THIS_MODULE,
         .open           = proc_udc_open,
         .read           = seq_read,
         .llseek         = seq_lseek,
@@ -239,15 +240,7 @@ static const struct file_operations proc_ops = {
 
 static void create_debug_file(struct at91_udc *udc)
 {
-        struct proc_dir_entry *pde;
-
-        pde = create_proc_entry (debug_filename, 0, NULL);
-        udc->pde = pde;
-        if (pde == NULL)
-                return;
-
-        pde->proc_fops = &proc_ops;
-        pde->data = udc;
+        udc->pde = proc_create_data(debug_filename, 0, NULL, &proc_ops, udc);
 }
 
 static void remove_debug_file(struct at91_udc *udc)
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 95f7662376f..881d74c3d96 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2504,6 +2504,7 @@ static int proc_udc_open(struct inode *inode, struct file *file)
 }
 
 static const struct file_operations proc_ops = {
+        .owner          = THIS_MODULE,
         .open           = proc_udc_open,
         .read           = seq_read,
         .llseek         = seq_lseek,
@@ -2512,11 +2513,7 @@ static const struct file_operations proc_ops = {
 
 static void create_proc_file(void)
 {
-        struct proc_dir_entry *pde;
-
-        pde = create_proc_entry (proc_filename, 0, NULL);
-        if (pde)
-                pde->proc_fops = &proc_ops;
+        proc_create(proc_filename, 0, NULL, &proc_ops);
 }
 
 static void remove_proc_file(void)
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 3fd7a0c1207..426575247b2 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1506,15 +1506,7 @@ static const char proc_filename[] = "driver/sl811h";
 
 static void create_debug_file(struct sl811 *sl811)
 {
-        struct proc_dir_entry *pde;
-
-        pde = create_proc_entry(proc_filename, 0, NULL);
-        if (pde == NULL)
-                return;
-
-        pde->proc_fops = &proc_ops;
-        pde->data = sl811;
-        sl811->pde = pde;
+        sl811->pde = proc_create_data(proc_filename, 0, NULL, &proc_ops, sl811);
 }
 
 static void remove_debug_file(struct sl811 *sl811)