9p: fix bad kconfig cross-dependency

This patch moves transport dynamic registration and matching to the net
module to prevent a bad Kconfig dependency between the net and fs 9p modules.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 1 insertions, 46 deletions

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 89ee0bace41d..873802de21cd 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -37,47 +37,6 @@
 #include "v9fs_vfs.h"
 
 /*
- * Dynamic Transport Registration Routines
- *
- */
-
-static LIST_HEAD(v9fs_trans_list);
-static struct p9_trans_module *v9fs_default_trans;
-
-/**
- * v9fs_register_trans - register a new transport with 9p
- * @m - structure describing the transport module and entry points
- *
- */
-void v9fs_register_trans(struct p9_trans_module *m)
-{
-        list_add_tail(&m->list, &v9fs_trans_list);
-        if (m->def)
-                v9fs_default_trans = m;
-}
-EXPORT_SYMBOL(v9fs_register_trans);
-
-/**
- * v9fs_match_trans - match transport versus registered transports
- * @arg: string identifying transport
- *
- */
-static struct p9_trans_module *v9fs_match_trans(const substring_t *name)
-{
-        struct list_head *p;
-        struct p9_trans_module *t = NULL;
-
-        list_for_each(p, &v9fs_trans_list) {
-                t = list_entry(p, struct p9_trans_module, list);
-                if (strncmp(t->name, name->from, name->to-name->from) == 0) {
-                        P9_DPRINTK(P9_DEBUG_TRANS, "trans=%s\n", t->name);
-                        break;
-                }
-        }
-        return t;
-}
-
-/*
   * Option Parsing (code inspired by NFS code)
   *  NOTE: each transport will parse its own options
   */
@@ -135,7 +94,7 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses)
         v9ses->afid = ~0;
         v9ses->debug = 0;
         v9ses->cache = 0;
-        v9ses->trans = v9fs_default_trans;
+        v9ses->trans = v9fs_default_trans();
 
         if (!options)
                 return;
@@ -245,10 +204,6 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
         v9ses->options = kstrdup(data, GFP_KERNEL);
         v9fs_parse_options(v9ses);
 
-        if ((v9ses->trans == NULL) && !list_empty(&v9fs_trans_list))
-                v9ses->trans = list_first_entry(&v9fs_trans_list,
-                 struct p9_trans_module, list);
-
         if (v9ses->trans == NULL) {
                 retval = -EPROTONOSUPPORT;
                 P9_DPRINTK(P9_DEBUG_ERROR,