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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Dec 13, 2023 at 01:27:01PM +0000, Will Deacon wrote: > On Tue, Dec 12, 2023 at 02:10:23PM +0000, Will Deacon wrote: > > On Tue, Dec 12, 2023 at 10:03:07AM -0400, Jason Gunthorpe wrote: > > > On Tue, Dec 12, 2023 at 01:26:51PM +0000, Will Deacon wrote: > > > > Why do we need to handle the 'dev && !cfg' case here, instead g > > > > returning NULL? > > > > > > dev && !cfg is impossible these days, so we can shuffle the if and > > > then just crash on that case like the other drivers do. > > > > Thanks, that would simplify it a little. > > Folded in the diff below. > > Will > > --->8 > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c > index 536e47e3a65a..b0a6b367d8a2 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c > @@ -861,7 +861,6 @@ static void arm_smmu_destroy_domain_context(struct arm_smmu_domain *smmu_domain) > > static struct iommu_domain *arm_smmu_domain_alloc_paging(struct device *dev) > { > - struct arm_smmu_master_cfg *cfg = NULL; > struct arm_smmu_domain *smmu_domain; > > /* > @@ -876,13 +875,10 @@ static struct iommu_domain *arm_smmu_domain_alloc_paging(struct device *dev) > mutex_init(&smmu_domain->init_mutex); > spin_lock_init(&smmu_domain->cb_lock); > > - if (dev) > - cfg = dev_iommu_priv_get(dev); > - if (cfg) { > - int ret; > + if (dev) { > + struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev); > > - ret = arm_smmu_init_domain_context(smmu_domain, cfg->smmu, dev); > - if (ret) { > + if (arm_smmu_init_domain_context(smmu_domain, cfg->smmu, dev)) { > kfree(smmu_domain); > return NULL; > } Looks good, thanks Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel