2.2.1 doesn't detect ATAPI cdrom

gsh@tantalus.clark.net
Sat, 30 Jan 1999 23:49:14 -0500 (EST)

I just upgraded from 2.0.36 to 2.2.1. Under 2.0.36 my CDROM (properly
jumperd as a master on the 2nd IDE chain) is not detected under
2.2.1:

Jan 30 22:11:58 tantalus kernel: PIIX4: not 100ative mode: will probe
irqs later
Jan 30 22:11:58 tantalus kernel: ide0: BM-DMA at 0xf000-0xf007,
BIOS settings: hda:pio, hdb:pio
Jan 30 22:11:58 tantalus kernel: ide1: BM-DMA at 0xf008-0xf00f,
BIOS settings: hdc:pio, hdd:pio
Jan 30 22:11:58 tantalus kernel: hda: WDC AC2420H, ATA DISK drive
Jan 30 22:11:58 tantalus kernel: hdb: Maxtor 82560A4, ATA DISK drive
Jan 30 22:11:58 tantalus kernel: hdc: IRQ probe failed (0)
Jan 30 22:11:58 tantalus kernel: hdc: IRQ probe failed (0)
Jan 30 22:11:58 tantalus kernel: hdd: IRQ probe failed (0)
Jan 30 22:11:58 tantalus kernel: hdd: IRQ probe failed (0)
Jan 30 22:11:58 tantalus kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Jan 30 22:11:58 tantalus kernel: hda: WDC AC2420H, 405MB w/128kB
Cache, CHS=989/15/56
Jan 30 22:11:58 tantalus kernel: hdb: Maxtor 82560A4, 2442MB w/256kB
Cache, CHS=1240/64/63, DMA
Jan 30 22:11:58 tantalus kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.2M
Jan 30 22:11:58 tantalus kernel: FDC 0 is a post-1991 82077

Under 2.0.36 it would be detected as:

Mar 9 16:42:52 tantalus kernel: ide: i82371 PIIX (Triton) on PCI bus
0 function 57
Mar 9 16:42:52 tantalus kernel: ide0: BM-DMA at 0xf000-0xf007
Mar 9 16:42:52 tantalus kernel: ide1: BM-DMA at 0xf008-0xf00f
Mar 9 16:42:52 tantalus kernel: hda: WDC AC2420H, 405MB w/128kB
Cache, CHS=989/15/56
Mar 9 16:42:52 tantalus kernel: hdb: Maxtor 82560A4, 2442MB w/256kB
Cache, CHS=1024/64/63, DMA
Mar 9 16:42:52 tantalus kernel: hdc: no response (status = 0xd0),
resetting drive
Mar 9 16:42:52 tantalus kernel: hdc: ACER CD-787E/JAS, ATAPI CDROM
drive
Mar 9 16:42:52 tantalus kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Mar 9 16:42:52 tantalus kernel: ide1 at 0x170-0x177,0x376 on irq 15
Mar 9 16:42:52 tantalus kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.2M
Mar 9 16:42:52 tantalus kernel: FDC 0 is a post-1991 82077

Using a command of "hdc=cdrom" on the boot line allows the CDROM to be
detected properly.

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