Description of problem:

With updated kernel 2.6.19-1.2895 my PHILIPS DVD+/-RW DVD8801 is always seen as
"Busy" when the ide_cd module is used AND the drive is the slave to my 
TSSTcorpDVD-ROM TS-H352C DVD-ROM.  When I reverse the master/slave relationship,
both drives work fine.  I can also make the DVD8801 work as a slave by using the
ide-scsi module.

Version-Release number of selected component (if applicable):

kernel 2.6.19-1.2895

How reproducible:

Boot with the 2.6.19-1.2895 kernel and try to mount a CD/DVD.  Try to add the
device with K3b

Steps to Reproduce:
1.  Boot with 2.6.19-1.2895 kernel
2.  Insert a data CD/DVD and try to mount it with "mount -t iso9660 ..."
And/Or
3.  Start K3b 
4.  Settings --> Configure K3b --> Devices --> Add device
  
Actual results:

(1) log contains many "...drive not ready for command" messages
(2) command hangs for a few minutes and may or may not mount the CD/DVD
(3 & 4) program spends about 10 seconds "Dectecting CD Devices" after which the
writer (DVD8801) does not show up in the device list.  Attempts to manually add
it fail. 

Expected results:

(1 & 2) log should not contain "drive not ready..." messages and the mount
command should succeed - taking a second or less.
(3 & 4) DVD8801 should show up in the device list - negating the need to add it
manually.

Additional info:

    Everything works fine with the 2.6.18-1.2798.fc6 kernel using the ide_cd module.
Also tested with the vanilla kernels 2.6.18.6, 2.6.19, and 2.6.19.2. Everything
works as expected with 2.6.18.6, but the problem again crops up in 2.6.19 and
2.6.19.2. In the 2.6.19 case, starting K3b results in a kernel freeze, requiring
a hard reset.
    Sometimes, if the attempt to mount the CD/DVD succeeds after several
seconds, the DVD8801 behaves normally (subsequent mounts happen quickly and the
drive can be detected by K3b).
    May be related to Bug #163474.  Not sure.
    dmesg output is attached.