diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2020-09-15 09:30:05 -0700 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-17 19:21:16 +0200 |
| commit | c7b6bac9c72c5fcbd6e9e12545bd3022c7f21860 (patch) | |
| tree | dd187df25c58ff75768a40b51b42422d949b233a /drivers/iommu/amd/iommu_v2.c | |
| parent | 856deb866d16e29bd65952e0289066f6078af773 (diff) | |
drm, iommu: Change type of pasid to u32
PASID is defined as a few different types in iommu including "int",
"u32", and "unsigned int". To be consistent and to match with uapi
definitions, define PASID and its variations (e.g. max PASID) as "u32".
"u32" is also shorter and a little more explicit than "unsigned int".
No PASID type change in uapi although it defines PASID as __u64 in
some places.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/1600187413-163670-2-git-send-email-fenghua.yu@intel.com
Diffstat (limited to 'drivers/iommu/amd/iommu_v2.c')
| -rw-r--r-- | drivers/iommu/amd/iommu_v2.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c index 0d175aed1d92..5ecc0bc608ec 100644 --- a/drivers/iommu/amd/iommu_v2.c +++ b/drivers/iommu/amd/iommu_v2.c @@ -40,7 +40,7 @@ struct pasid_state { struct mmu_notifier mn; /* mmu_notifier handle */ struct pri_queue pri[PRI_QUEUE_SIZE]; /* PRI tag states */ struct device_state *device_state; /* Link to our device_state */ - int pasid; /* PASID index */ + u32 pasid; /* PASID index */ bool invalid; /* Used during setup and teardown of the pasid */ spinlock_t lock; /* Protect pri_queues and @@ -70,7 +70,7 @@ struct fault { struct mm_struct *mm; u64 address; u16 devid; - u16 pasid; + u32 pasid; u16 tag; u16 finish; u16 flags; @@ -150,7 +150,7 @@ static void put_device_state(struct device_state *dev_state) /* Must be called under dev_state->lock */ static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state, - int pasid, bool alloc) + u32 pasid, bool alloc) { struct pasid_state **root, **ptr; int level, index; @@ -184,7 +184,7 @@ static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state static int set_pasid_state(struct device_state *dev_state, struct pasid_state *pasid_state, - int pasid) + u32 pasid) { struct pasid_state **ptr; unsigned long flags; @@ -211,7 +211,7 @@ out_unlock: return ret; } -static void clear_pasid_state(struct device_state *dev_state, int pasid) +static void clear_pasid_state(struct device_state *dev_state, u32 pasid) { struct pasid_state **ptr; unsigned long flags; @@ -229,7 +229,7 @@ out_unlock: } static struct pasid_state *get_pasid_state(struct device_state *dev_state, - int pasid) + u32 pasid) { struct pasid_state **ptr, *ret = NULL; unsigned long flags; @@ -594,7 +594,7 @@ static struct notifier_block ppr_nb = { .notifier_call = ppr_notifier, }; -int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid, +int amd_iommu_bind_pasid(struct pci_dev *pdev, u32 pasid, struct task_struct *task) { struct pasid_state *pasid_state; @@ -615,7 +615,7 @@ int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid, return -EINVAL; ret = -EINVAL; - if (pasid < 0 || pasid >= dev_state->max_pasids) + if (pasid >= dev_state->max_pasids) goto out; ret = -ENOMEM; @@ -679,7 +679,7 @@ out: } EXPORT_SYMBOL(amd_iommu_bind_pasid); -void amd_iommu_unbind_pasid(struct pci_dev *pdev, int pasid) +void amd_iommu_unbind_pasid(struct pci_dev *pdev, u32 pasid) { struct pasid_state *pasid_state; struct device_state *dev_state; @@ -695,7 +695,7 @@ void amd_iommu_unbind_pasid(struct pci_dev *pdev, int pasid) if (dev_state == NULL) return; - if (pasid < 0 || pasid >= dev_state->max_pasids) + if (pasid >= dev_state->max_pasids) goto out; pasid_state = get_pasid_state(dev_state, pasid); |