[CIFS] remove some redundant argument checks

This patch does kmalloc + memset conversion to kzalloc and removes some
redundant argument checks.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 8 insertions, 14 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 21cac15ed9a7..fc3a851357fc 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -673,9 +673,8 @@ multi_t2_fnd:
                 server->ssocket = NULL;
         }
         /* buffer usuallly freed in free_mid - need to free it here on exit */
-        if (bigbuf != NULL)
-                cifs_buf_release(bigbuf);
-        if (smallbuf != NULL)
+        cifs_buf_release(bigbuf);
+        if (smallbuf) /* no sense logging a debug message if NULL */
                 cifs_small_buf_release(smallbuf);
 
         read_lock(&GlobalSMBSeslock);
@@ -1910,8 +1909,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                         return rc;
                 }
 
-                srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL);
-                if (srvTcp == NULL) {
+                srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL);
+                if (!srvTcp) {
                         rc = -ENOMEM;
                         sock_release(csocket);
                         kfree(volume_info.UNC);
@@ -1920,7 +1919,6 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                         FreeXid(xid);
                         return rc;
                 } else {
-                        memset(srvTcp, 0, sizeof (struct TCP_Server_Info));
                         memcpy(&srvTcp->addr.sockAddr, &sin_server,
                                 sizeof (struct sockaddr_in));
                         atomic_set(&srvTcp->inFlight, 0);
@@ -2529,8 +2527,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
 sesssetup_nomem:        /* do not return an error on nomem for the info strings,
                            since that could make reconnection harder, and
                            reconnection might be needed to free memory */
-        if (smb_buffer)
-                cifs_buf_release(smb_buffer);
+        cifs_buf_release(smb_buffer);
 
         return rc;
 }
@@ -2868,8 +2865,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
                 rc = -EIO;
         }
 
-        if (smb_buffer)
-                cifs_buf_release(smb_buffer);
+        cifs_buf_release(smb_buffer);
 
         return rc;
 }
@@ -3277,8 +3273,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
                 rc = -EIO;
         }
 
-        if (smb_buffer)
-                cifs_buf_release(smb_buffer);
+        cifs_buf_release(smb_buffer);
 
         return rc;
 }
@@ -3446,8 +3441,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
                 ses->ipc_tid = smb_buffer_response->Tid;
         }
 
-        if (smb_buffer)
-                cifs_buf_release(smb_buffer);
+        cifs_buf_release(smb_buffer);
         return rc;
 }