Most recent kernel where this bug did not occur:
Distribution: ALL Linux kernel
Hardware Environment: ULI M-1573 south Bridge chip
Software Environment: Standard Linux Kenrel
Problem Description: 
The alim15x3.c havn't been update for 3 years.
Recently when we use this "ULI M1573" south bridge chip found that can't mount 
CDROM(VCD) smoothly, must waiting for a long time.
After I check the "ULI M1573" south bridge datasheet, I found the reason.
The reason is the "ULI M1573" version in the Linux is "0xC7" not "0xC4" anymore
So I was modified the source than it was successed.

Steps to reproduce:
Origianl kerenl source as below:
================================
        if(m5229_revision <= 0x20)
                tmpbyte = (tmpbyte & (~0x02)) | 0x01;
        else
                tmpbyte |= 0x01;

Below is modify source:
=================================
        if(m5229_revision <= 0x20)
                tmpbyte = (tmpbyte & (~0x02)) | 0x01;
        else if(m5229_revision == 0xC7)
                tmpbyte |= 0x03;
        else
                tmpbyte |= 0x01;