[PATCH] dvb: fix sparse warnings

Sparse warnings
 - remove address space related warnings

Signed-off-by: Peter Hagervall <hager@cs.umu.se>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/media/dvb/bt8xx/dst_ca.c b/drivers/media/dvb/bt8xx/dst_ca.c
index 8a8a333..492e829 100644 (file)
--- a/drivers/media/dvb/bt8xx/dst_ca.c
+++ b/drivers/media/dvb/bt8xx/dst_ca.c
@@ -166,7 +166,7 @@ static int ca_get_app_info(struct dst_state *state)
        return 0;
 }
 
-static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void *arg)
+static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg)
 {
        int i;
        u8 slot_cap[256];
@@ -192,20 +192,20 @@ static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps,
        p_ca_caps->descr_num = slot_cap[7];
        p_ca_caps->descr_type = 1;
 
-       if (copy_to_user((struct ca_caps *)arg, p_ca_caps, sizeof (struct ca_caps)))
+       if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps)))
                return -EFAULT;
 
        return 0;
 }
 
 /*     Need some more work     */
-static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
+static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
 {
        return -EOPNOTSUPP;
 }
 
 
-static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void *arg)
+static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg)
 {
        int i;
        static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
@@ -238,19 +238,19 @@ static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_s
        } else
                p_ca_slot_info->flags = 0;
 
-       if (copy_to_user((struct ca_slot_info *)arg, p_ca_slot_info, sizeof (struct ca_slot_info)))
+       if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info)))
                return -EFAULT;
 
        return 0;
 }
 
 
-static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
+static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
 {
        u8 i = 0;
        u32 command = 0;
 
-       if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
+       if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
                return -EFAULT;
 
        if (p_ca_message->msg) {
@@ -266,7 +266,7 @@ static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message,
                switch (command) {
                case CA_APP_INFO:
                        memcpy(p_ca_message->msg, state->messages, 128);
-                       if (copy_to_user((void *)arg, p_ca_message, sizeof (struct ca_msg)) )
+                       if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
                                return -EFAULT;
                        break;
                }
@@ -315,7 +315,7 @@ static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 l
        return 0;
 }
 
-u32 asn_1_decode(u8 *asn_1_array)
+static u32 asn_1_decode(u8 *asn_1_array)
 {
        u8 length_field = 0, word_count = 0, count = 0;
        u32 length = 0;
@@ -400,7 +400,7 @@ static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message
        return 0;
 }
 
-static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
+static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
 {
        int i = 0;
        unsigned int ca_message_header_len;
@@ -414,7 +414,7 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
        }
        dprintk(verbose, DST_CA_DEBUG, 1, " ");
 
-       if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
+       if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
                return -EFAULT;
 
        if (p_ca_message->msg) {
@@ -461,13 +461,14 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
        return 0;
 }
 
-static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
+static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long ioctl_arg)
 {
        struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
        struct dst_state* state = (struct dst_state*) dvbdev->priv;
        struct ca_slot_info *p_ca_slot_info;
        struct ca_caps *p_ca_caps;
        struct ca_msg *p_ca_message;
+       void __user *arg = (void __user *)ioctl_arg;
 
        if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
                dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
@@ -583,7 +584,7 @@ static int dst_ca_write(struct file *file, const char __user *buffer, size_t len
 
 static struct file_operations dst_ca_fops = {
        .owner = THIS_MODULE,
-       .ioctl = (void *)dst_ca_ioctl,
+       .ioctl = dst_ca_ioctl,
        .open = dst_ca_open,
        .release = dst_ca_release,
        .read = dst_ca_read,