Bug#723761: "irq 16: nobody cared" errors for the mptsas driver

[Bjørn Mork <bjorn@mork.no>]

Marco d'Itri <md@linux.it> writes:

> Package: src:linux
> Version: 3.2.46-1+deb7u1
> Severity: normal
>
> This is an IBM x3250 server.
>
> At boot time I get:
>
> [    7.160384] scsi2 : ioc0: LSISAS1064E B1, FwRev=01100000h, Ports=1, MaxQ=511, IRQ=16
> [    7.184758] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id 5, phy 0, sas_addr 0xdd61424dbd929f78
> [    7.187410] scsi 2:0:0:0: Direct-Access     ATA      WDC WD2500YS-23S 6C04 PQ: 0 ANSI: 5
> [    7.189626] scsi 2:0:0:0: Attached scsi generic sg1 type 0
> [    7.191026] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id 1, phy 1, sas_addr 0xdd61424dbe8a9e78
> [    7.193670] scsi 2:0:1:0: Direct-Access     ATA      WDC WD2500YS-23S 6C04 PQ: 0 ANSI: 5
> [    7.195860] scsi 2:0:1:0: Attached scsi generic sg2 type 0
> [    7.197245] mptsas: ioc0: attaching raid volume, channel 1, id 0
> [    7.198152] scsi 2:1:0:0: Direct-Access     LSILOGIC Logical Volume   3000 PQ: 0 ANSI: 2
> [    7.205961] scsi 2:1:0:0: Attached scsi generic sg3 type 0
>
> [   10.683522] irq 16: nobody cared (try booting with the "irqpoll" option)


Don't know how to solve the bug, but wanted to tip about a workaround
I've been happy with (on a LSISAS1068E B3):  Adding

  options mptbase mpt_msi_enable_sas=1

to /etc/modprobe.d/somefile.conf makes the controller use MSI instead.

I haven't got the faintest idea why that's not the default setting for
these devices...



Bjørn