net: fixup address-space warnings in compat_mc_{get,set}sockopt()

Add __user attributes in some of the casts in this function to avoid
the following sparse warnings:

net/compat.c:592:57: warning: cast removes address space of expression
net/compat.c:592:57: warning: incorrect type in initializer (different address spaces)
net/compat.c:592:57:    expected struct compat_group_req [noderef] <asn:1>*gr32
net/compat.c:592:57:    got void *<noident>
net/compat.c:613:65: warning: cast removes address space of expression
net/compat.c:613:65: warning: incorrect type in initializer (different address spaces)
net/compat.c:613:65:    expected struct compat_group_source_req [noderef] <asn:1>*gsr32
net/compat.c:613:65:    got void *<noident>
net/compat.c:634:60: warning: cast removes address space of expression
net/compat.c:634:60: warning: incorrect type in initializer (different address spaces)
net/compat.c:634:60:    expected struct compat_group_filter [noderef] <asn:1>*gf32
net/compat.c:634:60:    got void *<noident>
net/compat.c:672:52: warning: cast removes address space of expression
net/compat.c:672:52: warning: incorrect type in initializer (different address spaces)
net/compat.c:672:52:    expected struct compat_group_filter [noderef] <asn:1>*gf32
net/compat.c:672:52:    got void *<noident>

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/compat.c b/net/compat.c
index 319f30637a86..0a234d33acad 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -525,7 +525,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
         case MCAST_JOIN_GROUP:
         case MCAST_LEAVE_GROUP:
         {
-                struct compat_group_req __user *gr32 = (void *)optval;
+                struct compat_group_req __user *gr32 = (void __user *)optval;
                 struct group_req __user *kgr =
                         compat_alloc_user_space(sizeof(struct group_req));
                 u32 interface;
@@ -546,7 +546,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
         case MCAST_BLOCK_SOURCE:
         case MCAST_UNBLOCK_SOURCE:
         {
-                struct compat_group_source_req __user *gsr32 = (void *)optval;
+                struct compat_group_source_req __user *gsr32 = (void __user *)optval;
                 struct group_source_req __user *kgsr = compat_alloc_user_space(
                         sizeof(struct group_source_req));
                 u32 interface;
@@ -567,7 +567,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
         }
         case MCAST_MSFILTER:
         {
-                struct compat_group_filter __user *gf32 = (void *)optval;
+                struct compat_group_filter __user *gf32 = (void __user *)optval;
                 struct group_filter __user *kgf;
                 u32 interface, fmode, numsrc;
 
@@ -605,7 +605,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
         char __user *optval, int __user *optlen,
         int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
 {
-        struct compat_group_filter __user *gf32 = (void *)optval;
+        struct compat_group_filter __user *gf32 = (void __user *)optval;
         struct group_filter __user *kgf;
         int __user      *koptlen;
         u32 interface, fmode, numsrc;