iommu/vt-d: Convert non-returned local variable to boolean when relevant

This patch was produced using Coccinelle. A simplified version of the
semantic patch is:

@r exists@
identifier f;
local idexpression u8 x;
identifier xname;
@@

f(...) {
...when any
(
  x@xname = 1;
|
  x@xname = 0;
)
...when any
}

@bad exists@
identifier r.f;
local idexpression u8 r.x
expression e1 != {0, 1}, e2;
@@

f(...) {
...when any
(
  x = e1;
|
  x + e2
)
...when any
}

@depends on !bad@
identifier r.f;
local idexpression u8 r.x;
identifier r.xname;
@@

f(...) {
...
++ bool xname;
- int xname;
<...
(
  x =
- 1
+ true
|
  x =
- -1
+ false
)
...>

}

Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

2 files changed, 13 insertions, 12 deletions

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index ae4c1a854e57..d25cc6219a32 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -595,12 +595,13 @@ static void domain_update_iommu_coherency(struct dmar_domain *domain)
 {
         struct dmar_drhd_unit *drhd;
         struct intel_iommu *iommu;
-        int i, found = 0;
+        bool found = false;
+        int i;
 
         domain->iommu_coherency = 1;
 
         for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus) {
-                found = 1;
+                found = true;
                 if (!ecap_coherent(g_iommus[i]->ecap)) {
                         domain->iommu_coherency = 0;
                         break;
@@ -1267,7 +1268,7 @@ static struct device_domain_info *
 iommu_support_dev_iotlb (struct dmar_domain *domain, struct intel_iommu *iommu,
                          u8 bus, u8 devfn)
 {
-        int found = 0;
+        bool found = false;
         unsigned long flags;
         struct device_domain_info *info;
         struct pci_dev *pdev;
@@ -1282,7 +1283,7 @@ iommu_support_dev_iotlb (struct dmar_domain *domain, struct intel_iommu *iommu,
         list_for_each_entry(info, &domain->devices, link)
                 if (info->iommu == iommu && info->bus == bus &&
                     info->devfn == devfn) {
-                        found = 1;
+                        found = true;
                         break;
                 }
         spin_unlock_irqrestore(&device_domain_lock, flags);
@@ -4270,7 +4271,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
         struct device_domain_info *info, *tmp;
         struct intel_iommu *iommu;
         unsigned long flags;
-        int found = 0;
+        bool found = false;
         u8 bus, devfn;
 
         iommu = device_to_iommu(dev, &bus, &devfn);
@@ -4302,7 +4303,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
                  * update iommu count and coherency
                  */
                 if (info->iommu == iommu)
-                        found = 1;
+                        found = true;
         }
 
         spin_unlock_irqrestore(&device_domain_lock, flags);
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 14de1ab223c8..6c25b3c5b729 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -631,7 +631,7 @@ static int __init intel_enable_irq_remapping(void)
 {
         struct dmar_drhd_unit *drhd;
         struct intel_iommu *iommu;
-        int setup = 0;
+        bool setup = false;
         int eim = 0;
 
         if (x2apic_supported()) {
@@ -697,7 +697,7 @@ static int __init intel_enable_irq_remapping(void)
          */
         for_each_iommu(iommu, drhd) {
                 iommu_set_irq_remapping(iommu, eim);
-                setup = 1;
+                setup = true;
         }
 
         if (!setup)
@@ -856,7 +856,7 @@ static int __init parse_ioapics_under_ir(void)
 {
         struct dmar_drhd_unit *drhd;
         struct intel_iommu *iommu;
-        int ir_supported = 0;
+        bool ir_supported = false;
         int ioapic_idx;
 
         for_each_iommu(iommu, drhd)
@@ -864,7 +864,7 @@ static int __init parse_ioapics_under_ir(void)
                         if (ir_parse_ioapic_hpet_scope(drhd->hdr, iommu))
                                 return -1;
 
-                        ir_supported = 1;
+                        ir_supported = true;
                 }
 
         if (!ir_supported)
@@ -917,7 +917,7 @@ static void disable_irq_remapping(void)
 static int reenable_irq_remapping(int eim)
 {
         struct dmar_drhd_unit *drhd;
-        int setup = 0;
+        bool setup = false;
         struct intel_iommu *iommu = NULL;
 
         for_each_iommu(iommu, drhd)
@@ -933,7 +933,7 @@ static int reenable_irq_remapping(int eim)
 
                 /* Set up interrupt remapping for iommu.*/
                 iommu_set_irq_remapping(iommu, eim);
-                setup = 1;
+                setup = true;
         }
 
         if (!setup)