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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Thu, Jun 16, 2022 at 10:09:49AM +0800, Baolu Lu wrote: > External email: Use caution opening links or attachments > > > On 2022/6/16 08:03, Nicolin Chen wrote: > > diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c > > index 44016594831d..0dd13330fe12 100644 > > --- a/drivers/iommu/intel/iommu.c > > +++ b/drivers/iommu/intel/iommu.c > > @@ -4323,7 +4323,7 @@ static int prepare_domain_attach_device(struct iommu_domain *domain, > > return -ENODEV; > > > > if (dmar_domain->force_snooping && !ecap_sc_support(iommu->ecap)) > > - return -EOPNOTSUPP; > > + return -EMEDIUMTYPE; > > > > /* check if this iommu agaw is sufficient for max mapped address */ > > addr_width = agaw_to_width(iommu->agaw); > > @@ -4331,10 +4331,10 @@ static int prepare_domain_attach_device(struct iommu_domain *domain, > > addr_width = cap_mgaw(iommu->cap); > > > > if (dmar_domain->max_addr > (1LL << addr_width)) { > > - dev_err(dev, "%s: iommu width (%d) is not " > > + dev_dbg(dev, "%s: iommu width (%d) is not " > > "sufficient for the mapped address (%llx)\n", > > __func__, addr_width, dmar_domain->max_addr); > > - return -EFAULT; > > + return -EMEDIUMTYPE; > > } > > dmar_domain->gaw = addr_width; > > Can we simply remove the dev_err()? As the return value has explicitly > explained the failure reason, putting a print statement won't help much. Yes. As long as no one has objection, I can remove that in the next version. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu