[PATCH v4 2/5] arm64: tlb: Convert the opencoded field modify

From: Luo Jie
Date: Thu Jun 12 2025 - 09:50:29 EST

Replace below code with the wrapper FIELD_MODIFY(MASK, &reg, val)
- reg &= ~MASK;
- reg |= FIELD_PREP(MASK, val);
The semantic patch that makes this change is available
in scripts/coccinelle/misc/field_modify.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Luo Jie <quic_luoj@xxxxxxxxxxx>
---
arch/arm64/include/asm/tlbflush.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index aa9efee17277..cdcee05bdf6d 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -112,8 +112,7 @@ static inline unsigned long get_trans_granule(void)
level >= 0 && level <= 3) { \
u64 ttl = level & 3; \
ttl |= get_trans_granule() << 2; \
- arg &= ~TLBI_TTL_MASK; \
- arg |= FIELD_PREP(TLBI_TTL_MASK, ttl); \
+ FIELD_MODIFY(TLBI_TTL_MASK, &arg, ttl); \
} \
\
__tlbi(op, arg); \

--
2.34.1