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SubjectProblem with SiS Ide/Pata/Sata on 2.6.22-rc7-git4
(Please CC me in any responses)
There are some weirdness going on with SiS IDE/Pata/Sata support...

After moving from a 2.6.17 based kernel with ide dupport built in to a
2.6.22-rc7-git4 based kernel with fully modular ide/pata/sata we see the
following problem on a system with ide disks:

If you modprobe sata_sis:
(it also pulls pata_sis, is that really intended)
- both disks are detected ok

If you modprobe sata_sis/pata_sis and then sis5513:
(it also pulls pata_sis, is that really intended)
- both disks are detected ok

If you modprobe only sis5513
If you modprobe only sis5513 and then sata_sis/pata_sis:
- you get this:
(the hdb drive does not get detected/usable)

<6>Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
<6>ide: Assuming 33MHz system bus speed for PIO modes; override with
<5>SCSI subsystem initialized
<6>SIS5513: IDE controller at PCI slot 0000:00:02.5
<6>ACPI: PCI Interrupt 0000:00:02.5[A] -> GSI 16 (level, low) -> IRQ 21
<6>SIS5513: chipset revision 1
<6>SIS5513: not 100% native mode: will probe irqs later
<6>SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller
<6> ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
<6> ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
<7>Probing IDE interface ide0...
<4>hdb: QUANTUM FIREBALLlct15 07, ATA DISK drive
<4>hdb: host side 80-wire cable detection failed, limiting max speed to
<7>hdb: selected mode 0x42
<4>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
<7>Probing IDE interface ide1...
<7>hdc: selected mode 0x42
<4>ide1 at 0x170-0x177,0x376 on irq 15
<6>hdc: ATAPI 50X CD-ROM drive, 128kB Cache, UDMA(33)
<6>Uniform CD-ROM driver Revision: 3.20
<7>libata version 2.21 loaded.
<6>sata_sis 0000:00:05.0: version 0.8
<6>ACPI: PCI Interrupt 0000:00:05.0[A] -> GSI 17 (level, low) -> IRQ 22
<6>sata_sis 0000:00:05.0: Detected SiS 180/181/964 chipset in SATA mode
<6>scsi0 : sata_sis
<6>scsi1 : sata_sis
<6>ata1: SATA max UDMA/133 cmd 0x0001ac00 ctl 0x0001b002 bmdma
0x0001bc00 irq 0
<6>ata2: SATA max UDMA/133 cmd 0x0001b400 ctl 0x0001b802 bmdma
0x0001bc08 irq 0
<6>ata1: SATA link down (SStatus 0 SControl 300)
<6>ata2: SATA link down (SStatus 0 SControl 300)

kernel config is here:

and Mandriva Installer bug report here:

Note! this report is from a 2.6.22-tmb-desktop586-0.rc7.1mdv
Mandriva Cooker Contrib kernel wich is 2.6.22-rc7-git1 wich has several
patches including CFS, HRT, and several other patches (but none of them
touching ide/pata/sata)...

But we got the exact same behaviour with a clean 2.6.22-rc7-git4 +
Squashfs-3.2-r2 (needed for the installer)

Any pointers of what/how to fix ?

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