Merge tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block

[platform/kernel/linux-starfive.git] / fs / cifs / connect.c

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0db3448..c3b94c1 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: LGPL-2.1
 /*
- *   fs/cifs/connect.c
  *
  *   Copyright (C) International Business Machines  Corp., 2002,2011
  *   Author(s): Steve French (sfrench@us.ibm.com)
@@ -1090,7 +1089,7 @@ next_pdu:
        module_put_and_exit(0);
 }
 
-/**
+/*
  * Returns true if srcaddr isn't specified and rhs isn't specified, or
  * if srcaddr is specified and matches the IP address of the rhs argument
  */
@@ -1550,6 +1549,9 @@ static int match_session(struct cifs_ses *ses, struct smb3_fs_context *ctx)
 
 /**
  * cifs_setup_ipc - helper to setup the IPC tcon for the session
+ * @ses: smb session to issue the request on
+ * @ctx: the superblock configuration context to use for building the
+ *       new tree connection for the IPC (interprocess communication RPC)
  *
  * A new IPC connection is made and stored in the session
  * tcon_ipc. The IPC tcon has the same lifetime as the session.
@@ -1605,6 +1607,7 @@ out:
 
 /**
  * cifs_free_ipc - helper to release the session IPC tcon
+ * @ses: smb session to unmount the IPC from
  *
  * Needs to be called everytime a session is destroyed.
  *
@@ -1855,6 +1858,8 @@ cifs_set_cifscreds(struct smb3_fs_context *ctx __attribute__((unused)),
 
 /**
  * cifs_get_smb_ses - get a session matching @ctx data from @server
+ * @server: server to setup the session to
+ * @ctx: superblock configuration context to use to setup the session
  *
  * This function assumes it is being called from cifs_mount() where we
  * already got a server reference (server refcount +1). See
@@ -2065,6 +2070,8 @@ cifs_put_tcon(struct cifs_tcon *tcon)
 
 /**
  * cifs_get_tcon - get a tcon matching @ctx data from @ses
+ * @ses: smb session to issue the request on
+ * @ctx: the superblock configuration context to use for building the
  *
  * - tcon refcount is the number of mount points using the tcon.
  * - ses refcount is the number of tcon using the session.
@@ -2382,9 +2389,10 @@ cifs_match_super(struct super_block *sb, void *data)
        spin_lock(&cifs_tcp_ses_lock);
        cifs_sb = CIFS_SB(sb);
        tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
-       if (IS_ERR(tlink)) {
+       if (tlink == NULL) {
+               /* can not match superblock if tlink were ever null */
                spin_unlock(&cifs_tcp_ses_lock);
-               return rc;
+               return 0;
        }
        tcon = tlink_tcon(tlink);
        ses = tcon->ses;
@@ -3030,7 +3038,7 @@ build_unc_path_to_root(const struct smb3_fs_context *ctx,
        return full_path;
 }
 
-/**
+/*
  * expand_dfs_referral - Perform a dfs referral query and update the cifs_sb
  *
  * If a referral is found, cifs_sb->ctx->mount_options will be (re-)allocated