From 41bb23e70b50b89b6137cbecd37009d782454860 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Wed, 16 Feb 2022 10:52:48 +0800 Subject: [PATCH] iommu: Remove unused argument in is_attach_deferred The is_attach_deferred iommu_ops callback is a device op. The domain argument is unnecessary and never used. Remove it to make code clean. Suggested-by: Robin Murphy Signed-off-by: Lu Baolu Reviewed-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Link: https://lore.kernel.org/r/20220216025249.3459465-9-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel --- drivers/iommu/amd/amd_iommu.h | 3 +-- drivers/iommu/amd/iommu.c | 3 +-- drivers/iommu/amd/iommu_v2.c | 2 +- drivers/iommu/intel/iommu.c | 3 +-- drivers/iommu/iommu.c | 15 ++++++--------- include/linux/iommu.h | 2 +- 6 files changed, 11 insertions(+), 17 deletions(-) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 416815a525d6..3b2f06b7aca6 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -116,8 +116,7 @@ void amd_iommu_domain_clr_pt_root(struct protection_domain *domain) extern bool translation_pre_enabled(struct amd_iommu *iommu); -extern bool amd_iommu_is_attach_deferred(struct iommu_domain *domain, - struct device *dev); +extern bool amd_iommu_is_attach_deferred(struct device *dev); extern int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line); diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 461f1844ed1f..37f2fbb4b129 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2215,8 +2215,7 @@ static void amd_iommu_get_resv_regions(struct device *dev, list_add_tail(®ion->list, head); } -bool amd_iommu_is_attach_deferred(struct iommu_domain *domain, - struct device *dev) +bool amd_iommu_is_attach_deferred(struct device *dev) { struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev); diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c index 58da08cc3d01..7c94ec05d289 100644 --- a/drivers/iommu/amd/iommu_v2.c +++ b/drivers/iommu/amd/iommu_v2.c @@ -537,7 +537,7 @@ static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data) ret = NOTIFY_DONE; /* In kdump kernel pci dev is not initialized yet -> send INVALID */ - if (amd_iommu_is_attach_deferred(NULL, &pdev->dev)) { + if (amd_iommu_is_attach_deferred(&pdev->dev)) { amd_iommu_complete_ppr(pdev, iommu_fault->pasid, PPR_INVALID, tag); goto out; diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 2b5f4e57a8bb..80f1294be634 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5052,8 +5052,7 @@ intel_iommu_dev_disable_feat(struct device *dev, enum iommu_dev_features feat) } } -static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, - struct device *dev) +static bool intel_iommu_is_attach_deferred(struct device *dev) { return attach_deferred(dev); } diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 7af0ee670deb..27276421d253 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -831,13 +831,12 @@ out: return ret; } -static bool iommu_is_attach_deferred(struct iommu_domain *domain, - struct device *dev) +static bool iommu_is_attach_deferred(struct device *dev) { const struct iommu_ops *ops = dev_iommu_ops(dev); if (ops->is_attach_deferred) - return ops->is_attach_deferred(domain, dev); + return ops->is_attach_deferred(dev); return false; } @@ -894,7 +893,7 @@ rename: mutex_lock(&group->mutex); list_add_tail(&device->list, &group->devices); - if (group->domain && !iommu_is_attach_deferred(group->domain, dev)) + if (group->domain && !iommu_is_attach_deferred(dev)) ret = __iommu_attach_device(group->domain, dev); mutex_unlock(&group->mutex); if (ret) @@ -1745,7 +1744,7 @@ static int iommu_group_do_dma_attach(struct device *dev, void *data) struct iommu_domain *domain = data; int ret = 0; - if (!iommu_is_attach_deferred(domain, dev)) + if (!iommu_is_attach_deferred(dev)) ret = __iommu_attach_device(domain, dev); return ret; @@ -2020,9 +2019,7 @@ EXPORT_SYMBOL_GPL(iommu_attach_device); int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain) { - const struct iommu_ops *ops = dev_iommu_ops(dev); - - if (ops->is_attach_deferred && ops->is_attach_deferred(domain, dev)) + if (iommu_is_attach_deferred(dev)) return __iommu_attach_device(domain, dev); return 0; @@ -2031,7 +2028,7 @@ int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain) static void __iommu_detach_device(struct iommu_domain *domain, struct device *dev) { - if (iommu_is_attach_deferred(domain, dev)) + if (iommu_is_attach_deferred(dev)) return; if (unlikely(domain->ops->detach_dev == NULL)) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 90f1b5e3809d..1ded6076a75c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -269,7 +269,7 @@ struct iommu_ops { void (*put_resv_regions)(struct device *dev, struct list_head *list); int (*of_xlate)(struct device *dev, struct of_phandle_args *args); - bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev); + bool (*is_attach_deferred)(struct device *dev); /* Per device IOMMU features */ bool (*dev_has_feat)(struct device *dev, enum iommu_dev_features f);