[Bug 121531] Adaptec 7805H SAS HBA (pm80xx): hangs when writing >80MB at once

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https://bugzilla.kernel.org/show_bug.cgi?id=121531

--- Comment #12 from Martin von Wittich <martin.von.wittich@iserv.eu> ---
@Jack: No, I hadn't tried that yet, but I will now:

I downloaded the driver from the homepage and installed the
adaptec/debian_7.4/x64/pm80xx-1.4.0-11068-debian64.deb package on our dev
server. After DKMS had compiled the pm80xx.ko module, I unloaded the pm80xx
module on the installer live system and replaced
/lib/modules/3.16.0-4-amd64/kernel/drivers/scsi/pm8001/pm80xx.ko with the newly
compiled module and loaded it again. It seems to work better... I've been able
to write 1024 MB successfully:

root@(none):~# dd if=/dev/zero of=/dev/sdc bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 6.51408 s, 165 MB/s

I'm now installing Debian onto the machine, I'll report back how that turns
out.

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