[xen staging] arm/vgic: fix MISRA C 2012 Rule 20.7 violation

[patchbot@xxxxxxx]

commit 7bb36cbb932da8599b8d57b984fa0e858a8ef7ce
Author:     Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
AuthorDate: Wed Aug 24 14:22:29 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Aug 24 14:22:29 2022 +0200

    arm/vgic: fix MISRA C 2012 Rule 20.7 violation
    
    In macro VGIC_V3_LR_INDEX(), add parentheses around the macro parameter
    to prevent against unintended expansions.
    
    Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/include/asm/new_vgic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/include/asm/new_vgic.h 
b/xen/arch/arm/include/asm/new_vgic.h
index ab57fcd91d..b7fa9ab11a 100644
--- a/xen/arch/arm/include/asm/new_vgic.h
+++ b/xen/arch/arm/include/asm/new_vgic.h
@@ -43,7 +43,7 @@ enum vgic_type {
 
 #define VGIC_V2_MAX_LRS         (1 << 6)
 #define VGIC_V3_MAX_LRS         16
-#define VGIC_V3_LR_INDEX(lr)    (VGIC_V3_MAX_LRS - 1 - lr)
+#define VGIC_V3_LR_INDEX(lr)    (VGIC_V3_MAX_LRS - 1 - (lr))
 
 #define VGIC_CONFIG_EDGE        false
 #define VGIC_CONFIG_LEVEL       true
--
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