clean up NULL vs. 0 warnings generated by sparse tool

fs/cifs/asn1.c

@@ -201,7 +201,7 @@ asn1_header_decode(struct asn1_ctx *ctx,
 	if (def)
 		*eoc = ctx->pointer + len;
 	else
-		*eoc = 0;
+		*eoc = NULL;
 	return 1;
 }
 

fs/cifs/cifs_debug.c

@@ -313,65 +313,65 @@ cifs_proc_init(void)
 
 	proc_fs_cifs->owner = THIS_MODULE;
 	create_proc_read_entry("DebugData", 0, proc_fs_cifs,
-				cifs_debug_data_read, 0);
+				cifs_debug_data_read, NULL);
 
 #ifdef CONFIG_CIFS_STATS
 	create_proc_read_entry("Stats", 0, proc_fs_cifs,
-				cifs_stats_read, 0);
+				cifs_stats_read, NULL);
 #endif
 	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
-				cifsFYI_read, 0);
+				cifsFYI_read, NULL);
 	if (pde)
 		pde->write_proc = cifsFYI_write;
 
 	pde =
 	    create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
-				traceSMB_read, 0);
+				traceSMB_read, NULL);
 	if (pde)
 		pde->write_proc = traceSMB_write;
 
 	pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
-				oplockEnabled_read, 0);
+				oplockEnabled_read, NULL);
 	if (pde)
 		pde->write_proc = oplockEnabled_write;
 
 	pde = create_proc_read_entry("QuotaEnabled", 0, proc_fs_cifs,
-				quotaEnabled_read, 0);
+				quotaEnabled_read, NULL);
 	if (pde)
 		pde->write_proc = quotaEnabled_write;
 
 	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
-				linuxExtensionsEnabled_read, 0);
+				linuxExtensionsEnabled_read, NULL);
 	if (pde)
 		pde->write_proc = linuxExtensionsEnabled_write;
 
 	pde =
 	    create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
-				multiuser_mount_read, 0);
+				multiuser_mount_read, NULL);
 	if (pde)
 		pde->write_proc = multiuser_mount_write;
 
 	pde =
 	    create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
-				extended_security_read, 0);
+				extended_security_read, NULL);
 	if (pde)
 		pde->write_proc = extended_security_write;
 
 	pde =
 	create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
-				lookupFlag_read, 0);
+				lookupFlag_read, NULL);
 	if (pde)
 		pde->write_proc = lookupFlag_write;
 
 	pde =
 	    create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
-				ntlmv2_enabled_read, 0);
+				ntlmv2_enabled_read, NULL);
 	if (pde)
 		pde->write_proc = ntlmv2_enabled_write;
 
 	pde =
 	    create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
-				packet_signing_enabled_read, 0);
+				packet_signing_enabled_read, NULL);
 	if (pde)
 		pde->write_proc = packet_signing_enabled_write;
 }

fs/cifs/cifs_uniupr.h

@@ -132,7 +132,7 @@ const struct UniCaseRange CifsUniUpperRange[] = {
 	{0x0490, 0x04cc, UniCaseRangeU0490},
 	{0x1e00, 0x1ffc, UniCaseRangeU1e00},
 	{0xff40, 0xff5a, UniCaseRangeUff40},
-	{0, 0, 0}
+	{0, 0, NULL}
 };
 #endif
 

fs/cifs/cifssmb.c

@@ -190,7 +190,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 		rc = -EIO;
 		return rc;
 	}
-	rc = smb_init(SMB_COM_NEGOTIATE, 0, 0 /* no tcon yet */ ,
+	rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
 		      (void **) &pSMB, (void **) &pSMBr);
 	if (rc)
 		return rc;
@@ -363,7 +363,7 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
 		return -EBUSY;
 	}
 
-	rc = smb_init(SMB_COM_LOGOFF_ANDX, 2, 0 /* no tcon anymore */,
+	rc = smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL /* no tcon anymore */,
 		 (void **) &pSMB, (void **) &smb_buffer_response);
 
 	if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
@@ -2067,7 +2067,7 @@ CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
 	if (ses == NULL)
 		return -ENODEV;
 getDFSRetry:
-	rc = smb_init(SMB_COM_TRANSACTION2, 15, 0, (void **) &pSMB,
+	rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
 		      (void **) &pSMBr);
 	if (rc)
 		return rc;

fs/cifs/connect.c

@@ -1443,7 +1443,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
 
 	/* send SMBsessionSetup here */
 	header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
-			0 /* no tCon exists yet */ , 13 /* wct */ );
+			NULL /* no tCon exists yet */ , 13 /* wct */ );
 
 	pSMB->req_no_secext.AndXCommand = 0xFF;
 	pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
@@ -1699,7 +1699,7 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
 
 	/* send SMBsessionSetup here */
 	header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
-			0 /* no tCon exists yet */ , 12 /* wct */ );
+			NULL /* no tCon exists yet */ , 12 /* wct */ );
 	pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
 	pSMB->req.AndXCommand = 0xFF;
 	pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
@@ -1961,7 +1961,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
 
 	/* send SMBsessionSetup here */
 	header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
-			0 /* no tCon exists yet */ , 12 /* wct */ );
+			NULL /* no tCon exists yet */ , 12 /* wct */ );
 	pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
 	pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
 
@@ -2301,7 +2301,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
 
 	/* send SMBsessionSetup here */
 	header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
-			0 /* no tCon exists yet */ , 12 /* wct */ );
+			NULL /* no tCon exists yet */ , 12 /* wct */ );
 	pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
 	pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
 	pSMB->req.AndXCommand = 0xFF;
@@ -2674,7 +2674,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 	smb_buffer_response = smb_buffer;
 
 	header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
-			0 /*no tid */ , 4 /*wct */ );
+			NULL /*no tid */ , 4 /*wct */ );
 	smb_buffer->Uid = ses->Suid;
 	pSMB = (TCONX_REQ *) smb_buffer;
 	pSMBr = (TCONX_RSP *) smb_buffer_response;

fs/cifs/file.c

@@ -1105,7 +1105,7 @@ cifs_readpages(struct file *file, struct address_space *mapping,
 	struct cifsTconInfo *pTcon;
 	int bytes_read = 0;
 	unsigned int read_size,i;
-	char * smb_read_data = 0;
+	char * smb_read_data = NULL;
 	struct smb_com_read_rsp * pSMBr;
 	struct pagevec lru_pvec;
 	struct cifsFileInfo * open_file;
@@ -1170,7 +1170,7 @@ cifs_readpages(struct file *file, struct address_space *mapping,
 			if(rc== -EAGAIN) {
 				if(smb_read_data) {
 					cifs_buf_release(smb_read_data);
-					smb_read_data = 0;
+					smb_read_data = NULL;
 				}
 			}
 		}
@@ -1224,7 +1224,7 @@ cifs_readpages(struct file *file, struct address_space *mapping,
 		}
 		if(smb_read_data) {
 			cifs_buf_release(smb_read_data);
-			smb_read_data = 0;
+			smb_read_data = NULL;
 		}
 		bytes_read = 0;
 	}
@@ -1234,7 +1234,7 @@ cifs_readpages(struct file *file, struct address_space *mapping,
 /* need to free smb_read_data buf before exit */
 	if(smb_read_data) {
 		cifs_buf_release(smb_read_data);
-		smb_read_data = 0;
+		smb_read_data = NULL;
 	} 
 
 	FreeXid(xid);

fs/cifs/misc.c

@@ -150,7 +150,7 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
 struct smb_hdr *
 cifs_buf_get(void)
 {
-	struct smb_hdr *ret_buf = 0;
+	struct smb_hdr *ret_buf = NULL;
 
 /* We could use negotiated size instead of max_msgsize - 
    but it may be more efficient to always alloc same size