1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/sbus/char/jsflash.c b/drivers/sbus/char/jsflash.c
index c12c5046e2fa..14631ac11bc7 100644
--- a/drivers/sbus/char/jsflash.c
+++ b/drivers/sbus/char/jsflash.c
@@ -249,11 +249,11 @@ static loff_t jsf_lseek(struct file * file, loff_t offset, int orig)
 /*
  * OS SIMM Cannot be read in other size but a 32bits word.
  */
-static ssize_t jsf_read(struct file * file, char * buf, 
+static ssize_t jsf_read(struct file * file, char __user * buf, 
     size_t togo, loff_t *ppos)
 {
         unsigned long p = *ppos;
-        char *tmp = buf;
+        char __user *tmp = buf;
 
         union byte4 {
                 char s[4];
@@ -305,7 +305,7 @@ static ssize_t jsf_read(struct file * file, char * buf,
         return tmp-buf;
 }
 
-static ssize_t jsf_write(struct file * file, const char * buf,
+static ssize_t jsf_write(struct file * file, const char __user * buf,
     size_t count, loff_t *ppos)
 {
         return -ENOSPC;
@@ -356,10 +356,10 @@ static int jsf_ioctl_erase(unsigned long arg)
  * Program a block of flash.
  * Very simple because we can do it byte by byte anyway.
  */
-static int jsf_ioctl_program(unsigned long arg)
+static int jsf_ioctl_program(void __user *arg)
 {
         struct jsflash_program_arg abuf;
-        char *uptr;
+        char __user *uptr;
         unsigned long p;
         unsigned int togo;
         union {
@@ -367,13 +367,13 @@ static int jsf_ioctl_program(unsigned long arg)
                 char s[4];
         } b;
 
-        if (copy_from_user(&abuf, (char *)arg, JSFPRGSZ))
+        if (copy_from_user(&abuf, arg, JSFPRGSZ))
                 return -EFAULT; 
         p = abuf.off;
         togo = abuf.size;
         if ((togo & 3) || (p & 3)) return -EINVAL;
 
-        uptr = (char *) (unsigned long) abuf.data;
+        uptr = (char __user *) (unsigned long) abuf.data;
         while (togo != 0) {
                 togo -= 4;
                 if (copy_from_user(&b.s[0], uptr, 4))
@@ -390,19 +390,20 @@ static int jsf_ioctl(struct inode *inode, struct file *f, unsigned int cmd,
     unsigned long arg)
 {
         int error = -ENOTTY;
+        void __user *argp = (void __user *)arg;
 
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;
         switch (cmd) {
         case JSFLASH_IDENT:
-                if (copy_to_user((void *)arg, &jsf0.id, JSFIDSZ))
+                if (copy_to_user(argp, &jsf0.id, JSFIDSZ))
                         return -EFAULT;
                 break;
         case JSFLASH_ERASE:
                 error = jsf_ioctl_erase(arg);
                 break;
         case JSFLASH_PROGRAM:
-                error = jsf_ioctl_program(arg);
+                error = jsf_ioctl_program(argp);
                 break;
         }