From: "Kafu Nagai" <nkafu@easynews.com>
To: linux-kernel@vger.kernel.org
Subject: Recent ide patches and DMA
Date: Thu, 23 Nov 2000 13:09:35 -0800 [thread overview]
Message-ID: <200011232109.NAA29837@mail11.bigmailbox.com> (raw)
With recent ide patches, the ide driver seems to try to use DMA mode even for a drive which dosen't support it. CONFIG_IDEDMA_PCI_AUTO is enabled but even so with the stock kernel this dosen't happen. older patches didn't have this behavior either. Is this change intentional ?
hdc: 333630 sectors (171 MB) w/32KiB Cache, CHS=1011/15/22, DMA
Partition check:
hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 >
hdc:hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdc: dma_intr: error=0x04 { DriveStatusError }
hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdc: dma_intr: error=0x04 { DriveStatusError }
hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdc: dma_intr: error=0x04 { DriveStatusError }
hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdc: dma_intr: error=0x04 { DriveStatusError }
hdc: DMA disabled
ide1: reset: success
hdc1
~ $ hdparm -i /dev/hdc
/dev/hdc:
Model=QUANTUM ELS170A, FwRev=4.20, SerialNo=166304085456
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>5Mbs RotSpdTol>.5% }
RawCHS=1011/15/22, TrkSize=11264, SectSize=512, ECCbytes=4
BuffType=3(DualPortCache), BuffSize=32kB, MaxMultSect=8, MultSect=off
DblWordIO=no, OldPIO=2, DMA=no
CurCHS=1011/15/22, CurSects=333629, LBA=no
This may not be a major problem, as nobody probably uses such an obsolete drive nowadays.
The following patches have been tried:
ide.2.2.18-22.all.20001120
ide.2.4.0-t11.1120.patch
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next reply other threads:[~2000-11-23 21:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-23 21:09 Kafu Nagai [this message]
2000-11-24 10:57 ` Recent ide patches and DMA Vojtech Pavlik
-- strict thread matches above, loose matches on Subject: below --
2000-11-24 23:08 Kafu Nagai
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