[media] rc/ir-lirc-codec: cleanup __user tags

The code here treated user pointers correctly, but the __user tags
weren't used correctly so it caused Sparse warnings:

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index e5eeec4..ec2e67f 100644 (file)
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -98,7 +98,7 @@ static int ir_lirc_decode(struct rc_dev *dev, struct ir_raw_event ev)
        return 0;
 }
 
-static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf,
+static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
                                   size_t n, loff_t *ppos)
 {
        struct lirc_codec *lirc;
@@ -140,10 +140,11 @@ out:
 }
 
 static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
-                       unsigned long __user arg)
+                       unsigned long arg)
 {
        struct lirc_codec *lirc;
        struct rc_dev *dev;
+       u32 __user *argp = (u32 __user *)(arg);
        int ret = 0;
        __u32 val = 0, tmp;
 
@@ -156,7 +157,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
                return -EFAULT;
 
        if (_IOC_DIR(cmd) & _IOC_WRITE) {
-               ret = get_user(val, (__u32 *)arg);
+               ret = get_user(val, argp);
                if (ret)
                        return ret;
        }
@@ -265,7 +266,7 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
        }
 
        if (_IOC_DIR(cmd) & _IOC_READ)
-               ret = put_user(val, (__u32 *)arg);
+               ret = put_user(val, argp);
 
        return ret;
 }