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Diffstat (limited to 'drivers/sbus/char/jsflash.c')
-rw-r--r--drivers/sbus/char/jsflash.c19
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;
}