math64: Tidy up mul_u64_u32_shr()

Put together declaration and initialization of local variables.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240325064023.2997-5-adrian.hunter@intel.com

diff --git a/include/linux/math64.h b/include/linux/math64.h
index bf74478926d4adf2c30349202133ccb73381723d..fd13622b2056e6aac4ba2d826fccc534d7363eeb 100644 (file)
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -179,16 +179,12 @@ static __always_inline u64 mul_u64_u64_shr(u64 a, u64 mul, unsigned int shift)
 #ifndef mul_u64_u32_shr
 static __always_inline u64 mul_u64_u32_shr(u64 a, u32 mul, unsigned int shift)
 {
-       u32 ah, al;
+       u32 ah = a >> 32, al = a;
        u64 ret;
 
-       al = a;
-       ah = a >> 32;
-
        ret = mul_u32_u32(al, mul) >> shift;
        if (ah)
                ret += mul_u32_u32(ah, mul) << (32 - shift);
-
        return ret;
 }
 #endif /* mul_u64_u32_shr */