aic7xxx driver 5.0.19 -> 5.1.12 panic kernel with AHA2742T
rdballer at home.com
Mon Oct 19 18:02:46 PDT 1998
I was running the 4.1 aic7xxx code on a Linux 2.0.34 system without a
problem. My system is an older EISA/PCI (neptune chipset) TYAN board.
The Adaptec SCSI adapter is a AHA2742T (Rev E chip Twin Channel) card.
When I booted the 2.0.34 Debian Linux boot disk which has the 5.0.19
aic7xxx driver linked into it the driver paniced the kernel. I then
obtained a 2.0.35 source tree and updated the driver to 5.1.2 and the
following panic occurs:
(scsi0) <Adaptec AHA-274X SCSI host adapter> found at EISA slot 1
(scsi0) Twin Channel, A SCSI ID 7, B SCSI ID 7, 4/255 SCBs
(scsi0) Downloading sequencer code... 423 instructions downloaded
(scsi0) BRKADRINT error(0xa)
Illegal Sequencer Address referenced
Sequencer Ram Parity Error
Kernel panic: aic7xxx: unrecoverable BRKADRINT.
Based on this message it suggests my board's sequencer ram is bad, but
the 4.1 aic7xxx code does not have a problem on this very same system.
When I downgraded the 5.0.19 / 2.0.34 kernel to a 4.1 set of aic7xxx
code the system boots and runs fine.
I have channel A as the secondary channel on this card so channel B is
the primary/boot channel.
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