ath9k: dmar: DRHD: handling fault status reg 3

From: Mihai DonÈu
Date: Sun Aug 31 2014 - 06:24:01 EST


I have this device:

03:02.0 Network controller: Qualcomm Atheros AR9227 Wireless Network Adapter (rev 01)
Subsystem: Qualcomm Atheros Device 0300
Flags: bus master, 66MHz, medium devsel, latency 168, IRQ 19
Memory at f7c00000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [40] #80 [0000]
Kernel driver in use: ath9k

which works great, except dmesg keeps being spammed with messages like
this one:

[ 2880.027256] dmar: DRHD: handling fault status reg 3
[ 2880.027260] dmar: DMAR:[DMA Read] Request device [03:00.0] fault addr ffffd000 DMAR:[fault reason 06] PTE Read access is not set

Is this a driver issue or a hardware one? Can I somehow silence it
without disabling the use of the IOMMU?


Mihai DonÈu
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