diff mbox series

[XEN,06/10] xen/arm: smmu: address violations of MISRA C Rule 20.7

Message ID 50ec3074772b0c58bef446d1c06aa41db04a66d0.1710762555.git.nicola.vetrini@bugseng.com (mailing list archive)
State Superseded
Headers show
Series address some violations of MISRA C Rule 20.7 | expand

Commit Message

Nicola Vetrini March 18, 2024, 11:53 a.m. UTC
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@bugseng.com>
---
 xen/drivers/passthrough/arm/smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Stefano Stabellini March 19, 2024, 3:32 a.m. UTC | #1
On Mon, 18 Mar 2024, Nicola Vetrini wrote:
> 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@bugseng.com>

Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
diff mbox series

Patch

diff --git a/xen/drivers/passthrough/arm/smmu.c b/xen/drivers/passthrough/arm/smmu.c
index 83196057a937..f2cee82f553a 100644
--- a/xen/drivers/passthrough/arm/smmu.c
+++ b/xen/drivers/passthrough/arm/smmu.c
@@ -326,7 +326,7 @@  static struct iommu_group *iommu_group_get(struct device *dev)
  */
 #define ARM_SMMU_GR0_NS(smmu)						\
 	((smmu)->base +							\
-		((smmu->options & ARM_SMMU_OPT_SECURE_CFG_ACCESS)	\
+		(((smmu)->options & ARM_SMMU_OPT_SECURE_CFG_ACCESS)	\
 			? 0x400 : 0))
 
 /* Page table bits */