[xen staging] arm/smmu: address some violations of MISRA C Rule 20.7

[patchbot@xxxxxxx]

commit e90089db3fab06dc8947fcd64f1ed54569e708a6
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Mon Mar 11 09:36:20 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Mar 11 09:36:20 2024 +0100

    arm/smmu: address some violations of MISRA C Rule 20.7
    
    MISRA C Rule 20.7 states: "Expressions resulting from the expansion
    of macro parameters shall be enclosed in parentheses". Therefore, some
    macro definitions should gain additional parentheses to ensure that all
    current and future users will be safe with respect to expansions that
    can possibly alter the semantics of the passed-in macro parameter.
    
    No functional change.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/drivers/passthrough/arm/smmu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/passthrough/arm/smmu.c 
b/xen/drivers/passthrough/arm/smmu.c
index 625ed0e419..83196057a9 100644
--- a/xen/drivers/passthrough/arm/smmu.c
+++ b/xen/drivers/passthrough/arm/smmu.c
@@ -242,7 +242,7 @@ struct arm_smmu_xen_device {
        struct iommu_group *group;
 };
 
-#define dev_archdata(dev) ((struct arm_smmu_xen_device *)dev->iommu)
+#define dev_archdata(dev) ((struct arm_smmu_xen_device *)(dev)->iommu)
 #define dev_iommu_domain(dev) (dev_archdata(dev)->domain)
 #define dev_iommu_group(dev) (dev_archdata(dev)->group)
 
@@ -627,7 +627,7 @@ struct arm_smmu_master_cfg {
 };
 #define INVALID_SMENDX                 -1
 #define for_each_cfg_sme(cfg, i, idx, num) \
-       for (i = 0; idx = cfg->smendx[i], i < num; ++i)
+       for (i = 0; idx = (cfg)->smendx[i], (i) < (num); ++(i))
 
 struct arm_smmu_master {
        struct device_node              *of_node;
--
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