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IDE and CDROM devices (was Re: [IDE bug] hdparm lockup)

DISCUSSION Petr Vandrovec 1 participant 1 message Jul 25, 2002

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Petr Vandrovec

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Quoted 9 lines · Marcin Dalecki
Quoted 4 lines · Andrew Morton

/dev/hdc:
HDIO_GETGEO_BIG failed: Invalid argument
(what's this?)

Please don't call every bug out there IDE. Thanks. Becouse this one is acutally most likely due to the ioctl() handling changes between 27 and 28...

Any plans to fix 'hdparm -I /dev/atapi-cdrom-device' I reported to you and Bartolomiej at the end of June? ide_*_taskfile sets REQ_SPECIAL, but ide-cd calls cdrom_end_request(drive, rq, 1) on all such requests without looking at them or without trying to execute them. This forces hdparm -I to think that ATA identify suceeded and returned all zeroes:

/dev/hdd:

removable ATA device, with non-removable media
Standards:
Likely used: 1
Configuration:

        Logical               max current
        cylinders             0   0
        heads                 0   0
        ...

Capabilities:
no IORDY
Cannot perform double-word IO
r/w/ multiple sector transfer: not supported
DMA: not supported
PIO: pio0

while 'hdparm -i' correctly reports that it is Toshiba DVD device supporting IORDY, pio0-4, sdma0-2, mdma0-2, udma0-2, according to ATA2-ATA5.
Thanks,
Petr Vandrovec [email protected]