BUG_ON() Conversion in drivers/block/

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 9e35de0..0e66e90 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -1316,7 +1316,7 @@
 
 	cp->Request.Timeout = 0;
 	memset(cp->Request.CDB, 0, sizeof(cp->Request.CDB));
-	if (cmd->cmd_len > sizeof(cp->Request.CDB)) BUG();
+	BUG_ON(cmd->cmd_len > sizeof(cp->Request.CDB));
 	cp->Request.CDBLen = cmd->cmd_len;
 	memcpy(cp->Request.CDB, cmd->cmnd, cmd->cmd_len);
 	cp->Request.Type.Type = TYPE_CMD;