SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13G


                                 (Rule 13d-102)


             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2


                   Under the Securities Exchange Act of 1934
                                (Amendment No. 1)

                                LSI LOGIC CORP
             -----------------------------------------------------
                                (Name of Issuer)
                                  Common Stock
              -----------------------------------------------------
                         (Title of Class of Securities)

                                    502161102
             -----------------------------------------------------
                                 (CUSIP Number)

                               December 31, 2004
             -----------------------------------------------------
            (Date Of Event which Requires Filing of this Statement)


Check the following box if a fee is being paid with this statement [ ].


----------
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but  shall be subject to all other provisions  of the Act (however, see the
Notes).




CUSIP No. 502161102                   13G                    Page 2 of 8 Pages



--------------------------------------------------------------------------------
   1.  NAME OF REPORTING PERSON(S)
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON(S)

       Morgan Stanley
       IRS  #  39-314-5972
--------------------------------------------------------------------------------
   2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [  ]
                                                             (b)  [  ]
--------------------------------------------------------------------------------
   3.  SEC USE ONLY

--------------------------------------------------------------------------------
   4.  CITIZENSHIP OR PLACE OF ORGANIZATION

       The state of organization is Delaware.
--------------------------------------------------------------------------------
   NUMBER OF      5.   SOLE VOTING POWER
     SHARES            24,511,920
  BENEFICIALLY    --------------------------------------------------------------
    OWNED BY      6.   SHARED VOTING POWER
      EACH             42,773
   REPORTING      --------------------------------------------------------------
     PERSON       7.   SOLE DISPOSITIVE POWER
      WITH             24,511,920
                  --------------------------------------------------------------
                  8.   SHARED DISPOSITIVE POWER
                       42,773
--------------------------------------------------------------------------------
   9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       24,635,472
--------------------------------------------------------------------------------
  10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


--------------------------------------------------------------------------------
  11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.4%
--------------------------------------------------------------------------------
  12.  TYPE OF REPORTING PERSON*

       IA, CO, HC
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!







CUSIP No. 502161102                13G                    Page 3  of  8  Pages



--------------------------------------------------------------------------------
   1.  NAME OF REPORTING PERSON(S)
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON(S)

       Morgan Stanley & Co. International Limited

--------------------------------------------------------------------------------
   2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [  ]
                                                             (b)  [  ]
--------------------------------------------------------------------------------
   3.  SEC USE ONLY

--------------------------------------------------------------------------------
   4.  CITIZENSHIP OR PLACE OF ORGANIZATION

       Organized under the Laws of England.
--------------------------------------------------------------------------------
   NUMBER OF      5.   SOLE VOTING POWER
     SHARES            23,864,400
  BENEFICIALLY    --------------------------------------------------------------
    OWNED BY      6.   SHARED VOTING POWER
      EACH
   REPORTING      --------------------------------------------------------------
     PERSON       7.   SOLE DISPOSITIVE POWER
      WITH             23,864,400
                  --------------------------------------------------------------
                  8.   SHARED DISPOSITIVE POWER

--------------------------------------------------------------------------------
   9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       23,864,400
--------------------------------------------------------------------------------
  10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


--------------------------------------------------------------------------------
  11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       6.2%
--------------------------------------------------------------------------------
  12.  TYPE OF REPORTING PERSON*

       BD, CO
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.  502161102                   13G                   Page 4 of 8 Pages



Item 1.     (a)   Name of Issuer:
                  LSI LOGIC CORP
                  --------------------------------------------------------------
            (b)   Address of Issuer's Principal Executive Offices:
                  1621 BARBER LANE
                  MILPITAS, CA 95035
                  --------------------------------------------------------------
Item 2.     (a)   Name of Person Filing:
                  (a)Morgan Stanley
                  (b)Morgan Stanley & Co. International Limited
                  --------------------------------------------------------------
            (b)   Address of Principal Business Office, or if None, Residence:

                  (a)1585 Broadway
                     New York, New York 10036

                  (b) 25 Cabot Square
                      Canary Wharf
                      London E14 4QA
                      England
                 --------------------------------------------------------------
            (c)   Citizenship:

                  Incorporated by reference to Item 4 of the
                  cover page pertaining to each reporting person.
                  --------------------------------------------------------------
            (d)   Title of Class of Securities:
                  Common Stock
                  --------------------------------------------------------------
            (e)   CUSIP Number:
                  502161102
                  --------------------------------------------------------------

Item 3.     (a)   Morgan Stanley  is a parent holding company.

            (b)   Morgan Stanley & Co. International  Limited is (a) a Broker-
                  Dealer doing business under the laws of the United  Kingdom.
                  Morgan  Stanley & Co.  International  Ltd.  is  filing  this
                  statement  pursuant to Rules 13d-1(b) and 13d-2(b),  relying
                  on such  rules and using  Schedule  13G in  accordance  with
                  no-action assurances from the Division of Corporate Finance,
                  Office of Tender Offers.




CUSIP No. 502161102                   13-G                   Page 5 of 8 Pages


Item 4.     Ownership.

            Incorporated  by  reference to Items (5) - (9) and (11) of the
            cover page.

            (a) Morgan Stanley is filing solely in its capacity as the
                parent company of, and indirect beneficial owner of
                securities held by, one of its business units.

Item 5.     Ownership of Five Percent or Less of a Class.

            Inaplicable

Item 6.     Ownership of More Than Five Percent on Behalf of Another Person.

            Inaplicable

Item 7.     Identification and Classification of the Subsidiary which Acquired
            the Security Being Reported on By the Parent Holding Company.

Item 8.     Identification and Classification of Members of the Group.

Item 9.     Notice of Dissolution of Group.

Item 10.    Certification.

            By signing below I certify that, to the best of my knowledge and
            belief, the securities referred to above were acquired in the
            ordinary course of business and were not acquired for the purpose
            of and do not have the effect of changing or influencing the
            control of the issuer of such securities and were not acquired in
            connection with or as a participant in any transaction having
            such purpose or effect.





CUSIP No. 502161102                  13-G                   Page 6 of 8 Pages

                                  Signature.

            After reasonable inquiry and to the best of my knowledge and
            belief, I certify that the information set forth in this
            statement is true, complete and correct.


Date:       February 15, 2005

Signature:  /s/ Dennine Bullard
            -----------------------------------------------------------------

Name/Title  Dennine Bullard/Executive Director, Morgan Stanley & Co. Inc.
            -----------------------------------------------------------------
            MORGAN STANLEY


Date:       February 15, 2005

Signature:  /s/ Dennine Bullard
            -----------------------------------------------------------------

Name/Title  Dennine Bullard/Executive Director, Morgan Stanley & Co. Inc.
            -----------------------------------------------------------------
            MORGAN STANLEY & CO. INTERNATIONAL LIMITED




                       INDEX TO EXHIBITS                             PAGE
                       -----------------                             ----

EXHIBIT 1       Agreement to Make a Joint Filing                       7

EXHIBIT 2       Secretary's Certificate Authorizing Dennine Bullard    8
                to Sign on behalf of Morgan Stanley

* Attention. Intentional misstatements or omissions of fact constitute federal
  criminal violations (see 18 U.S.C. 1001).

(022597DTI)




 CUSIP No.  502161102                 13-G                   Page 7  of  8 Pages


                            EXHIBIT 1 TO SCHEDULE 13G
               ---------------------------------------------------

                                FEBRUARY 15, 2005
               ---------------------------------------------------


             MORGAN STANLEY and MORGAN STANLEY & CO. INTERNATIONAL LIMITED

             hereby agree that, unless differentiated, this Schedule 13G is

             filed on behalf of each of the parties.


            MORGAN STANLEY

            BY: /s/ Dennine Bullard
            --------------------------------------------------------------------
            Dennine Bullard /Executive Director, Morgan Stanley & Co. Inc.

            MORGAN STANLEY & CO. INTERNATIONAL LIMITED

            BY: /s/ Dennine Bullard
            --------------------------------------------------------------------
            Dennine Bullard /Executive Director, Morgan Stanley & Co. Inc.


* Attention. Intentional misstatements or omissions of fact constitute federal
  criminal violations (see 18 U.S.C. 1001).



  CUSIP No.  502161102                                       Page 8 of 8 Pages


                           SECRETARY'S CERTIFICATE


         I, Charlene R. Herzer,a duly elected and acting Assistant Secretary
         of Morgan Stanley, a corporation organized and existing under the 
         laws of the State of Delaware (the "Corporation"),certify as 
         follows:


             (1) Donald G. Kempf, Jr. is the duly elected Executive Vice
                 President, Chief Legal Officer and Secretary of the
                 Corporation;

             (2) Pursuant to Section 7.01 of the Bylaws of the Corporation
                 and resolutions approved by the Board of Directors of the
                 Corporation on September 25,1998, the Chief Legal Officer
                 is authorized to enter into agreements and other instruments
                 on behalf of the Corporation and may delegate such powers
                 to others under his jurisdiction; and

             (3) Donald G. Kempf signed a Delegation of Authority as of
                 February 23, 2000, which authorized Dennine Bullard to
                 sign reports to be filed under Section 13 and 16 of the
                 Securities Exchange Act of 1934 on behalf of the
                 Corporation.  Such authorization is in full force and
                 efect as of this date.

          IN WITNESS WHEREOF, I have hereunto set my name and affixed the seal
          of the Corporation as of the 3rd day of February, 2005.

                                                ______________________________
                                                Charlene R. Herzer
                                                Assistant Secretary