[xen staging] xen/arm: Simplify type handling for SMCCC declarations

[patchbot@xxxxxxx]

commit 67bcf5eae7098a8c720550f468c347370acd3eaf
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Feb 24 12:25:45 2026 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Feb 25 13:06:56 2026 +0000

    xen/arm: Simplify type handling for SMCCC declarations
    
    There's no use creating a typed copy of a macro argument, simply to use it 
to
    create a second typed copy.  Remove the indirection, halving the number of
    local variables created in scope.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
---
 xen/arch/arm/include/asm/smccc.h | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/xen/arch/arm/include/asm/smccc.h b/xen/arch/arm/include/asm/smccc.h
index 590daf7b27..5fdefc43d9 100644
--- a/xen/arch/arm/include/asm/smccc.h
+++ b/xen/arch/arm/include/asm/smccc.h
@@ -113,39 +113,32 @@ struct arm_smccc_res {
     register unsigned long  arg0 ASM_REG(0) = (uint32_t)(a0)
 
 #define __declare_arg_1(a0, a1, res)                        \
-    typeof(a1) __a1 = (a1);                                 \
     __declare_arg_0(a0, res);                               \
-    register typeof(a1)     arg1 ASM_REG(1) = __a1
+    register typeof(a1)     arg1 ASM_REG(1) = (a1)
 
 #define __declare_arg_2(a0, a1, a2, res)                    \
-    typeof(a2) __a2 = (a2);                                 \
     __declare_arg_1(a0, a1, res);                           \
-    register typeof(a2)     arg2 ASM_REG(2) = __a2
+    register typeof(a2)     arg2 ASM_REG(2) = (a2)
 
 #define __declare_arg_3(a0, a1, a2, a3, res)                \
-    typeof(a3) __a3 = (a3);                                 \
     __declare_arg_2(a0, a1, a2, res);                       \
-    register typeof(a3)     arg3 ASM_REG(3) = __a3
+    register typeof(a3)     arg3 ASM_REG(3) = (a3)
 
 #define __declare_arg_4(a0, a1, a2, a3, a4, res)        \
-    typeof(a4) __a4 = (a4);                             \
     __declare_arg_3(a0, a1, a2, a3, res);               \
-    register typeof(a4)     arg4 ASM_REG(4) = __a4
+    register typeof(a4)     arg4 ASM_REG(4) = (a4)
 
 #define __declare_arg_5(a0, a1, a2, a3, a4, a5, res)    \
-    typeof(a5) __a5 = (a5);                             \
     __declare_arg_4(a0, a1, a2, a3, a4, res);           \
-    register typeof(a5)     arg5 ASM_REG(5) = __a5
+    register typeof(a5)     arg5 ASM_REG(5) = (a5)
 
 #define __declare_arg_6(a0, a1, a2, a3, a4, a5, a6, res)    \
-    typeof(a6) __a6 = (a6);                                 \
     __declare_arg_5(a0, a1, a2, a3, a4, a5, res);           \
-    register typeof(a6)     arg6 ASM_REG(6) = __a6
+    register typeof(a6)     arg6 ASM_REG(6) = (a6)
 
 #define __declare_arg_7(a0, a1, a2, a3, a4, a5, a6, a7, res)    \
-    typeof(a7) __a7 = (a7);                                     \
     __declare_arg_6(a0, a1, a2, a3, a4, a5, a6, res);           \
-    register typeof(a7)     arg7 ASM_REG(7) = __a7
+    register typeof(a7)     arg7 ASM_REG(7) = (a7)
 
 #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
 #define __declare_args(count, ...)  ___declare_args(count, __VA_ARGS__)
--
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