[SCSI] Fix signness of parameters in scsi module

In scsi module I've found some inconsistency between variable type
used in module_param_named and type passed to module_param_named as an
argument. Especially the inconsistency of `max_scsi_luns' parameter is
a bit serious because the description text says "last scsi LUN (should
be between 1 and 2^32-1)".

Signed-off-by: Masatake YAMATO <jet@gyve.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 309b224..20df7fe 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -85,7 +85,7 @@
 static unsigned int max_scsi_luns = 1;
 #endif
 
-module_param_named(max_luns, max_scsi_luns, int, S_IRUGO|S_IWUSR);
+module_param_named(max_luns, max_scsi_luns, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(max_luns,
 		 "last scsi LUN (should be between 1 and 2^32-1)");
 
@@ -109,14 +109,14 @@
  */
 static unsigned int max_scsi_report_luns = 511;
 
-module_param_named(max_report_luns, max_scsi_report_luns, int, S_IRUGO|S_IWUSR);
+module_param_named(max_report_luns, max_scsi_report_luns, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(max_report_luns,
 		 "REPORT LUNS maximum number of LUNS received (should be"
 		 " between 1 and 16384)");
 
 static unsigned int scsi_inq_timeout = SCSI_TIMEOUT/HZ+3;
 
-module_param_named(inq_timeout, scsi_inq_timeout, int, S_IRUGO|S_IWUSR);
+module_param_named(inq_timeout, scsi_inq_timeout, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(inq_timeout, 
 		 "Timeout (in seconds) waiting for devices to answer INQUIRY."
 		 " Default is 5. Some non-compliant devices need more.");