Messages in this thread | | | Subject | Re: [PATCH] iommu/arm-smmu: Print message when Cavium erratum 27704 was detected | From | Robin Murphy <> | Date | Mon, 13 Mar 2017 12:15:36 +0000 |
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On 13/03/17 10:39, Robert Richter wrote: > Firmware is responsible for properly enabling smmu workarounds. Print > a message for better diagnostics when Cavium erratum 27704 was > detected.
The wording there could possibly be misinterpreted as the firmware actively having to do something to the hardware prior to handing it off to Linux, as opposed to merely supplying a correct FDT or IORT table, but I'm not sure it matters all that much, and the patch itself is fine:
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Thanks, Robin.
> Signed-off-by: Robert Richter <rrichter@cavium.com> > --- > drivers/iommu/arm-smmu.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c > index abf6496843a6..c88bf8deb958 100644 > --- a/drivers/iommu/arm-smmu.c > +++ b/drivers/iommu/arm-smmu.c > @@ -1887,6 +1887,7 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu) > atomic_add_return(smmu->num_context_banks, > &cavium_smmu_context_count); > smmu->cavium_id_base -= smmu->num_context_banks; > + dev_notice(smmu->dev, "\tenabling workaround for Cavium erratum 27704\n"); > } > > /* ID2 */ >
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