first fruits - kill l2cap ->memcpy_fromiovec()

Just use copy_from_iter().  That's what this method is trying to do
in all cases, in a very convoluted fashion.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 29 deletions

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index bca6fc0a3196..692f786bebe2 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -606,10 +606,6 @@ struct l2cap_ops {
         struct sk_buff          *(*alloc_skb) (struct l2cap_chan *chan,
                                                unsigned long hdr_len,
                                                unsigned long len, int nb);
-        int                     (*memcpy_fromiovec) (struct l2cap_chan *chan,
-                                                     unsigned char *kdata,
-                                                     struct msghdr *msg,
-                                                     int len);
 };
 
 struct l2cap_conn {
@@ -903,31 +899,6 @@ static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
         return 0;
 }
 
-static inline int l2cap_chan_no_memcpy_fromiovec(struct l2cap_chan *chan,
-                                                 unsigned char *kdata,
-                                                 struct msghdr *msg,
-                                                 int len)
-{
-        /* Following is safe since for compiler definitions of kvec and
-         * iovec are identical, yielding the same in-core layout and alignment
-         */
-        struct kvec *vec = (struct kvec *)msg->msg_iter.iov;
-
-        while (len > 0) {
-                if (vec->iov_len) {
-                        int copy = min_t(unsigned int, len, vec->iov_len);
-                        memcpy(kdata, vec->iov_base, copy);
-                        len -= copy;
-                        kdata += copy;
-                        vec->iov_base += copy;
-                        vec->iov_len -= copy;
-                }
-                vec++;
-        }
-
-        return 0;
-}
-
 extern bool disable_ertm;
 
 int l2cap_init_sockets(void);