From owner-freebsd-current@FreeBSD.ORG  Fri Mar 18 11:38:09 2011
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Date: Fri, 18 Mar 2011 19:38:06 +0800
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Subject: What's wrong with the driver for ATA/SATA?
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Today I csup-ed my kernel to the latest. But it doesn't work with
my SATA hard disk. I have to use old kernel (csup-ed on January 8th)
instead. My motherboard is Intel D510MO (Chipset: Intel NM10) and
a SATA hard disk by Seagate is connected. The kernel messages of
problem are:=20

Mar 18 19:21:38 origin1 kernel: ad4: WARNING - READ_DMA48 requeued due to=20
channel reset LBA=3D445804382
Mar 18 19:21:38 origin1 kernel: ata2: FAILURE - already active DMA on thi=
s=20
device
Mar 18 19:21:38 origin1 kernel: ata2: setting up DMA failed
Mar 18 19:21:38 origin1 kernel: ad4: WARNING - READ_DMA48 requeued due to=20
channel reset LBA=3D434271550
Mar 18 19:21:38 origin1 kernel: ata2: FAILURE - already active DMA on thi=
s=20
device
Mar 18 19:21:38 origin1 kernel: ata2: setting up DMA failed
Mar 18 19:21:38 origin1 kernel:=20
g_vfs_done():ad4s4a[READ(offset=3D19145261056, length=3D16384)]error =3D =
5=20


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    =E6=9D=A5=E8=87=AA=E4=B8=AD=E5=9B=BD=E5=8C=97=E4=BA=AC                               =
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