Commit 9f10d9ee breaks CD mounting/burning

[walt <w41ter@gmail.com>]

Hi Bartolmiej,

For me, this commit causes the problem it's intended to fix:

commit 9f10d9ee0ac6d79d7bc8b9a158bf4a29322d84d3
Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date:   Tue Feb 26 21:50:35 2008 +0100

     ide-cd: fix 'ireason' handling for REQ_TYPE_ATA_PC requests

     This fixes some hangs caused by not finishing the transfer before ending
     the request and also makes use of 'ireason == 1' quirk for spurious IRQs.

When I mount a CD there is a long delay, and I see this error message:

hdc: ide_cd_check_ireason: wrong transfer direction!
cdrom: failed setting lba address space
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
<repeated many times>

When I revert this commit everything works properly again, including
CD burning.

Here is the drive info:

hdc: TSSTcorpCD/DVDW SH-S182M, ATAPI CD/DVD-ROM drive
hdc: host max PIO5 wanted PIO255(auto-tune) selected PIO4
hdc: UDMA/33 mode selected
hdc: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
hdc: UDMA/33 mode selected

I'm happy to try patches or supply more info, just let me know
what you need.

Thanks.