[SPARC] display7seg: implement ->unlocked_ioctl and ->compat_ioctl
all ioctls are 32bit compat clean, so the driver can use ->compat_ioctl
and ->unlocked_ioctl easily.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 24ed589..39f5421 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/ioport.h> /* request_region */
+#include <linux/smp_lock.h>
#include <asm/atomic.h>
#include <asm/ebus.h> /* EBus device */
#include <asm/oplib.h> /* OpenProm Library */
@@ -114,22 +115,25 @@
return 0;
}
-static int d7s_ioctl(struct inode *inode, struct file *f,
- unsigned int cmd, unsigned long arg)
+static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
__u8 regs = readb(d7s_regs);
__u8 ireg = 0;
+ int error = 0
- if (D7S_MINOR != iminor(inode))
+ if (D7S_MINOR != iminor(file->f_dentry->d_inode))
return -ENODEV;
+ lock_kernel();
switch (cmd) {
case D7SIOCWR:
/* assign device register values
* we mask-out D7S_FLIP if in sol_compat mode
*/
- if (get_user(ireg, (int __user *) arg))
- return -EFAULT;
+ if (get_user(ireg, (int __user *) arg)) {
+ error = -EFAULT;
+ break;
+ }
if (0 != sol_compat) {
(regs & D7S_FLIP) ?
(ireg |= D7S_FLIP) : (ireg &= ~D7S_FLIP);
@@ -144,8 +148,10 @@
* This driver will not misinform you about the state
* of your hardware while in sol_compat mode
*/
- if (put_user(regs, (int __user *) arg))
- return -EFAULT;
+ if (put_user(regs, (int __user *) arg)) {
+ error = -EFAULT;
+ break;
+ }
break;
case D7SIOCTM:
@@ -155,15 +161,17 @@
writeb(regs, d7s_regs);
break;
};
+ lock_kernel();
- return 0;
+ return error;
}
static struct file_operations d7s_fops = {
- .owner = THIS_MODULE,
- .ioctl = d7s_ioctl,
- .open = d7s_open,
- .release = d7s_release,
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = d7s_ioctl,
+ .compat_ioctl = d7s_ioctl,
+ .open = d7s_open,
+ .release = d7s_release,
};
static struct miscdevice d7s_miscdev = { D7S_MINOR, D7S_DEVNAME, &d7s_fops };