[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>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index e5eeec4da76e..ec2e67fd236b 100644
--- 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;
 }